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GMC Sierra 2500HD/3500HD parts.

136 parts. Every gain labeled by where the number comes from, every price compared across the retailers that carry the part.

truckFord F-150Ford F-250/F-350 Super DutyFord F-450 Super DutyFord RangerChevy Silverado 1500Chevy Silverado 2500HD/3500HDChevy ColoradoGMC Sierra 1500GMC Sierra 2500HD/3500HDRam 1500Ram 2500/3500Jeep WranglerJeep GladiatorToyota Tundra
engine
drivetraincabbedrear wheels(only filters where a real source states a restriction — most parts fit every drivetrain, cab, bed, and equipment package; cab+bed restrictions are for a couple of made-to-order exhaust systems, and narrow further once both are answered. Not sure which bed you have? Standard Box = ~6.9 ft box, ~82.3 in, Long Box = ~8 ft box, ~98.2 in — measured inside the bed, from the wall behind the cab to the inside of the closed tailgate)
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Armor & Skid Plates

Armor & Skid Plates · 2024-2026
AEV | American Expedition Vehicles AEV Radiator Skid Plate for 2024+ Chevrolet Silverado HD and GMC Sierra HD
fits 6.6L Duramax V8 (L5P, updated)
install
~1-2 hrs
pairs with: Suspension, Bumper
number source
Skid plates and armor sit under or alongside the truck to take hits that would otherwise land on the oil pan, fuel tank or rockers. This one is the AEV Radiator Skid Plate for 2024+ Chevrolet Silverado HD and GMC Sierra HD, listed to fit the 2024-2026 GMC Sierra 2500HD/3500HD. The listing describes it as powder coated.
why this one: Only worth the weight if you actually leave pavement. Check what the plate covers before assuming it covers everything. SDHQ Offroad lists it at $550.00, and the fitment above is what the listing itself states, not a guess.
Armor & Skid Plates · 2020-2026
AEV | American Expedition Vehicles AEV IFS Skid Plate for the 2020+ Chevrolet Silverado HD and GMC Sierra HD
fits 6.6L Duramax V8 (L5P) · 6.6L Duramax V8 (L5P, updated)
install
~1-2 hrs
pairs with: Suspension, Bumper
number source
Skid plates and armor sit under or alongside the truck to take hits that would otherwise land on the oil pan, fuel tank or rockers. This one is the AEV IFS Skid Plate for the 2020+ Chevrolet Silverado HD and GMC Sierra HD, listed to fit the 2020-2026 GMC Sierra 2500HD/3500HD.
why this one: Only worth the weight if you actually leave pavement. Check what the plate covers before assuming it covers everything. SDHQ Offroad lists it at $475.00, and the fitment above is what the listing itself states, not a guess.
Armor & Skid Plates · 2020-2026
BDS Suspension Heavy Duty Skid Plate Kit | Chevy Silverado and GMC Sierra 2500HD/ 3500HD (20-26)
fits 6.6L Duramax V8 (L5P) · 6.6L Duramax V8 (L5P, updated)
install
~1-2 hrs
pairs with: Suspension, Bumper
number source
Skid plates and armor sit under or alongside the truck to take hits that would otherwise land on the oil pan, fuel tank or rockers. This one is the BDS Suspension Heavy Duty Skid Plate Kit | Chevy Silverado and GMC Sierra 2500HD/ 3500HD (20-26), listed to fit the 2020-2026 GMC Sierra 2500HD/3500HD with the 6.6L Duramax V8 (L5P) or 6.6L Duramax V8 (L5P, updated).
why this one: Only worth the weight if you actually leave pavement. Check what the plate covers before assuming it covers everything. BDS Suspension Direct lists it at $167.95, and the fitment above is what the listing itself states, not a guess.
Armor & Skid Plates · 2020-2025
Cognito Motorsports Cognito 110-91193 Front Fender Liner Tie Back Kit | 2020-2025 GM Silverado/Sierra 2500HD/3500HD
fits 6.6L Duramax V8 (L5P) · 6.6L Duramax V8 (L5P, updated)
install
~1-2 hrs
pairs with: Suspension, Bumper
number source
Skid plates and armor sit under or alongside the truck to take hits that would otherwise land on the oil pan, fuel tank or rockers. This one is the Cognito 110-91193 Front Fender Liner Tie Back Kit | 2020-2025 GM Silverado/Sierra 2500HD/3500HD, listed to fit the 2020-2025 GMC Sierra 2500HD/3500HD. The listing describes it as made in the USA, lifetime warranty.
why this one: Only worth the weight if you actually leave pavement. Check what the plate covers before assuming it covers everything. Alligator Performance lists it at $99.95, and the fitment above is what the listing itself states, not a guess.
Armor & Skid Plates · 2020-2024
Cognito Motorsports Front Fender Liner Tie Back Kit for 2020-2024 Silverado/Sierra 2500/3500 2WD/4WD Cognito
fits 6.6L Duramax V8 (L5P) · 6.6L Duramax V8 (L5P, updated)
install
~1-2 hrs
pairs with: Suspension, Bumper
number source
Skid plates and armor sit under or alongside the truck to take hits that would otherwise land on the oil pan, fuel tank or rockers. This one is the Cognito Front Fender Liner Tie Back Kit for 2020-2024 Silverado/Sierra 2500/3500 2WD/4WD Cognito, listed to fit the 2020-2024 GMC Sierra 2500HD/3500HD.
why this one: Only worth the weight if you actually leave pavement. Check what the plate covers before assuming it covers everything. Apollo Off Road lists it at $99.95, and the fitment above is what the listing itself states, not a guess.
Armor & Skid Plates · 2020-2025
Husky Liners Husky Liners 20-25 Chev/GMC Silverado/Sierra 2500/3500HD CC Trail Armor Rocker Panel (4pc Set) - Blk
fits 6.6L Duramax V8 (L5P) · 6.6L Duramax V8 (L5P, updated)
install
~1-2 hrs
pairs with: Suspension, Bumper
number source
Skid plates and armor sit under or alongside the truck to take hits that would otherwise land on the oil pan, fuel tank or rockers. This one is the Husky Liners Husky Liners 20-25 Chev/GMC Silverado/Sierra 2500/3500HD CC Trail Armor Rocker Panel (4pc Set) - Blk, listed to fit the 2020-2025 GMC Sierra 2500HD/3500HD with the 6.6L Duramax V8 (L5P) or 6.6L Duramax V8 (L5P, updated).
why this one: Only worth the weight if you actually leave pavement. Check what the plate covers before assuming it covers everything. SuspensionHouse lists it at $249.99, and the fitment above is what the listing itself states, not a guess.
Armor & Skid Plates · 2006-2007
MBRP Exhaust MBRP 4" Armor Plus Cat Back Exhaust, 2006-2007 LBZ
fits 6.6L Duramax V8 (LBZ)
install
~1-2 hrs
pairs with: Suspension, Bumper
number source
Skid plates and armor sit under or alongside the truck to take hits that would otherwise land on the oil pan, fuel tank or rockers. This one is the MBRP 4" Armor Plus Cat Back Exhaust, 2006-2007 LBZ, listed to fit the 2006-2007 GMC Sierra 2500HD/3500HD with the 6.6L Duramax V8 (LBZ). The listing describes it as stainless steel, lifetime warranty.
why this one: Only worth the weight if you actually leave pavement. Check what the plate covers before assuming it covers everything. DmaxStore lists it at $704.99, and the fitment above is what the listing itself states, not a guess.
Armor & Skid Plates · 2020-2023
S&B Filters S&B | 2020+ GMC Sierra 2500 / 3500 SRW Front & Rear Fender Flare Caps -Cut Kit
fits 6.6L Duramax V8 (L5P)
install
~1-2 hrs
pairs with: Suspension, Bumper
number source
Skid plates and armor sit under or alongside the truck to take hits that would otherwise land on the oil pan, fuel tank or rockers. This one is the S&B Filters S&B | 2020+ GMC Sierra 2500 / 3500 SRW Front & Rear Fender Flare Caps -Cut Kit, listed to fit the 2020-2023 GMC Sierra 2500HD/3500HD with the 6.6L Duramax V8 (L5P).
why this one: Only worth the weight if you actually leave pavement. Check what the plate covers before assuming it covers everything. DDP Motorsports lists it at $119.00, and the fitment above is what the listing itself states, not a guess.
Armor & Skid Plates · 2020-2023
S&B Filters S&B | 2020+ GMC Sierra 2500 / 3500 SRW Front & Rear Fender Flare Caps - No Cut Kit
fits 6.6L Duramax V8 (L5P)
install
~1-2 hrs
pairs with: Suspension, Bumper
number source
Skid plates and armor sit under or alongside the truck to take hits that would otherwise land on the oil pan, fuel tank or rockers. This one is the S&B Filters S&B | 2020+ GMC Sierra 2500 / 3500 SRW Front & Rear Fender Flare Caps - No Cut Kit, listed to fit the 2020-2023 GMC Sierra 2500HD/3500HD with the 6.6L Duramax V8 (L5P).
why this one: Only worth the weight if you actually leave pavement. Check what the plate covers before assuming it covers everything. DDP Motorsports lists it at $119.00, and the fitment above is what the listing itself states, not a guess.
Armor & Skid Plates · 2020-2023
S&B Filters 2020+ GMC Sierra 2500/3500 Front & Rear Fender Flare Caps
fits 6.6L Duramax V8 (L5P)
install
~1-2 hrs
pairs with: Suspension, Bumper
number source
Skid plates and armor sit under or alongside the truck to take hits that would otherwise land on the oil pan, fuel tank or rockers. This one is the S&B 2020+ GMC Sierra 2500/3500 Front & Rear Fender Flare Caps, listed to fit the 2020-2023 GMC Sierra 2500HD/3500HD with the 6.6L Duramax V8 (L5P).
why this one: Only worth the weight if you actually leave pavement. Check what the plate covers before assuming it covers everything. SDHQ Offroad lists it at $119.00, and the fitment above is what the listing itself states, not a guess.
Armor & Skid Plates · 2020-2026
Undercover Undercover Armor Flex 20-26 Silv/Sierra 2500HD/3500HD 8'2 AX12026
fits 6.6L Duramax V8 (L5P) · 6.6L Duramax V8 (L5P, updated)
install
~1-2 hrs
pairs with: Suspension, Bumper
number source
Skid plates and armor sit under or alongside the truck to take hits that would otherwise land on the oil pan, fuel tank or rockers. This one is the Undercover Armor Flex 20-26 Silv/Sierra 2500HD/3500HD 8'2 AX12026, listed to fit the 2020-2026 GMC Sierra 2500HD/3500HD. The listing describes it as made in the USA.
why this one: Only worth the weight if you actually leave pavement. Check what the plate covers before assuming it covers everything. Rudy's Performance Parts lists it at $1449.99, and the fitment above is what the listing itself states, not a guess.
Armor & Skid Plates · 2020-2026
Undercover Undercover Armor Flex 20-26 Silv/Sierra 2500HD/3500HD 6'10" AX12024
fits 6.6L Duramax V8 (L5P) · 6.6L Duramax V8 (L5P, updated)
install
~1-2 hrs
pairs with: Suspension, Bumper
number source
Skid plates and armor sit under or alongside the truck to take hits that would otherwise land on the oil pan, fuel tank or rockers. This one is the Undercover Armor Flex 20-26 Silv/Sierra 2500HD/3500HD 6'10" AX12024, listed to fit the 2020-2026 GMC Sierra 2500HD/3500HD. The listing describes it as made in the USA.
why this one: Only worth the weight if you actually leave pavement. Check what the plate covers before assuming it covers everything. Rudy's Performance Parts lists it at $1399.99, and the fitment above is what the listing itself states, not a guess.
Armor & Skid Plates · 2017-2019
Westin Westin HDX DEF Tank Black Skid Plate 17-19 GM 6.6L Duramax
fits 6.6L Duramax V8 (L5P)
install
~1-2 hrs
pairs with: Suspension, Bumper
number source
Skid plates and armor sit under or alongside the truck to take hits that would otherwise land on the oil pan, fuel tank or rockers. This one is the Westin HDX DEF Tank Black Skid Plate 17-19 GM 6.6L Duramax, listed to fit the 2017-2019 GMC Sierra 2500HD/3500HD with the 6.6L Duramax V8 (L5P). The listing describes it as powder coated.
why this one: Only worth the weight if you actually leave pavement. Check what the plate covers before assuming it covers everything. Diesel Power Products lists it at $266.00, and the fitment above is what the listing itself states, not a guess.

Bed Lighting

Bed Lighting · 2015-2019
Morimoto Morimoto LFZ01 XB Bed Lights | 2015-2019 GM Silverado/Sierra 2500HD/3500HD
fits 6.6L Duramax V8 (LML) · 6.6L Duramax V8 (L5P)
install
~30-60 min
pairs with: Bed Protection, Tailgate
number source
Bed lighting puts usable light in the bed so loading in the dark is not a phone-flashlight job. This one is the Morimoto LED Lighting Morimoto LFZ01 XB Bed Lights | 2015-2019 GM Silverado/Sierra 2500HD/3500HD, listed to fit the 2015-2019 GMC Sierra 2500HD/3500HD. The listing describes it as plug and play.
why this one: Check whether the kit wires into a switch or runs off the tailgate. That is the difference between useful and annoying. Alligator Performance lists it at $52.70, and the fitment above is what the listing itself states, not a guess.
Bed Lighting · 2001-2026
Nilight TR-05 LED Truck Bed Light Strip Kit, 2 Strips, 60 in, 180 LEDs
fits
install
~30-45 min (peel-and-stick strips + wiring to 12V/fuse box)
pairs with: Tonneau covers/bed liners and cargo tie-downs; other 12V accessory-circuit add-ons (backup camera, trailer wiring)
number source
Two 60 inch light strips that stick under the rails of your truck bed so you can see what you are doing after dark. The kit comes with the on/off switch, a blade fuse, and a splitter so both strips run off one wire. Universal fit, meaning it is not cut for one truck, it works in any bed.
why this one: Cheapest thing on this list that solves a real problem. A lot of bed light kits leave out the switch or the fuse and you end up buying parts twice. This one has both.
also carried: eBay
Bed Lighting · 2001-2026
Nilight TR-09 LED Truck Bed Light Strip Kit, 3 Strips, 60 in, 270 LEDs
fits
install
~45-60 min (peel-and-stick strips + wiring to 12V/fuse box, 3 strips)
pairs with: Cargo bed dividers/tie-down kits and tonneau covers, and other plug-in 12V lighting accessories (rock lights, tailgate light bars)
number source
Same idea as the two strip kit with a third strip added. On a long bed, two strips leave a dark spot in the middle and the third strip fills it. Universal fit, it is not cut for one truck.
why this one: Buy this one instead of the two strip kit if you have a long bed. About eight dollars more for the extra light.
also carried: Walmart
Bed Lighting · 2020-2026
RECON GMC Sierra & Chevy Silverado 20-26 2500 & 3500 (Fits Both Single Wheel & Dually 4th GEN) - ULTRA HIGH POWER Red LED 3rd Brake Light w/ CREE XML White LED Cargo Lights (Replaces LED 3rd Brake Light with 2 Cargo Bed Cameras - Smoked Lens
fits 6.6L Duramax V8 (L5P) · 6.6L Duramax V8 (L5P, updated)
install
~30-60 min
pairs with: Bed Protection, Tailgate
number source
Bed lighting puts usable light in the bed so loading in the dark is not a phone-flashlight job. This one is the RECON GMC Sierra & Chevy Silverado 20-26 2500 & 3500 (Fits Both Single Wheel & Dually 4th GEN) - ULTRA HIGH POWER Red LED 3rd Brake Light w/ CREE XML White LED Cargo Lights (Replaces LED 3rd Brake Light with 2 Cargo Bed Cameras - Smoked Lens, listed to fit the 2020-2026 GMC Sierra 2500HD/3500HD.
why this one: Check whether the kit wires into a switch or runs off the tailgate. That is the difference between useful and annoying. GoRECON lists it at $369.95, and the fitment above is what the listing itself states, not a guess.
Bed Lighting · 2020-2026
RECON GMC Sierra & Chevy Silverado 20-26 2500 & 3500 (Fits Both Single Wheel & Dually 4th GEN) - ULTRA HIGH POWER Red LED 3rd Brake Light w/ CREE XML White LED Cargo Lights (Replaces LED 3rd Brake Light with 2 Cargo Bed Cameras - Clear Lens
fits 6.6L Duramax V8 (L5P) · 6.6L Duramax V8 (L5P, updated)
install
~30-60 min
pairs with: Bed Protection, Tailgate
number source
Bed lighting puts usable light in the bed so loading in the dark is not a phone-flashlight job. This one is the RECON GMC Sierra & Chevy Silverado 20-26 2500 & 3500 (Fits Both Single Wheel & Dually 4th GEN) - ULTRA HIGH POWER Red LED 3rd Brake Light w/ CREE XML White LED Cargo Lights (Replaces LED 3rd Brake Light with 2 Cargo Bed Cameras - Clear Lens, listed to fit the 2020-2026 GMC Sierra 2500HD/3500HD.
why this one: Check whether the kit wires into a switch or runs off the tailgate. That is the difference between useful and annoying. GoRECON lists it at $369.95, and the fitment above is what the listing itself states, not a guess.
Bed Lighting · 2014-2019
RECON GMC Sierra & Chevy Silverado 3rd GEN 14-19 2500/3500 Ultra High Power SCANNING Red LED 3rd Brake Light w/ High Power CREE XML White LED Cargo Lights - Smoked Lens
fits 6.6L Duramax V8 (LML) · 6.6L Duramax V8 (L5P)
install
~30-60 min
pairs with: Bed Protection, Tailgate
number source
Bed lighting puts usable light in the bed so loading in the dark is not a phone-flashlight job. This one is the RECON GMC Sierra & Chevy Silverado 3rd GEN 14-19 2500/3500 Ultra High Power SCANNING Red LED 3rd Brake Light w/ High Power CREE XML White LED Cargo Lights - Smoked Lens, listed to fit the 2014-2019 GMC Sierra 2500HD/3500HD.
why this one: Check whether the kit wires into a switch or runs off the tailgate. That is the difference between useful and annoying. GoRECON lists it at $229.95, and the fitment above is what the listing itself states, not a guess.
Bed Lighting · 2014-2019
RECON GMC Sierra & Chevy Silverado 3rd Gen 14-19 2500/3500 Ultra High Power Red CREE XML Red LED 3rd Brake Light with White LED Cargo Lights with Smoked Lens
fits 6.6L Duramax V8 (LML) · 6.6L Duramax V8 (L5P)
install
~30-60 min
pairs with: Bed Protection, Tailgate
number source
Bed lighting puts usable light in the bed so loading in the dark is not a phone-flashlight job. This one is the RECON GMC Sierra & Chevy Silverado 3rd Gen 14-19 2500/3500 Ultra High Power Red CREE XML Red LED 3rd Brake Light with White LED Cargo Lights with Smoked Lens, listed to fit the 2014-2019 GMC Sierra 2500HD/3500HD.
why this one: Check whether the kit wires into a switch or runs off the tailgate. That is the difference between useful and annoying. GoRECON lists it at $199.95, and the fitment above is what the listing itself states, not a guess.
Bed Lighting · 2014-2019
RECON GMC Sierra & Chevy Silverado 14-19 2500/3500 (3rd Gen) - Ultra High Power Red CREE XML Red LED 3rd Brake Light with White LED Cargo Lights - Clear Lens
fits 6.6L Duramax V8 (LML) · 6.6L Duramax V8 (L5P)
install
~30-60 min
pairs with: Bed Protection, Tailgate
number source
Bed lighting puts usable light in the bed so loading in the dark is not a phone-flashlight job. This one is the RECON GMC Sierra & Chevy Silverado 14-19 2500/3500 (3rd Gen) - Ultra High Power Red CREE XML Red LED 3rd Brake Light with White LED Cargo Lights - Clear Lens, listed to fit the 2014-2019 GMC Sierra 2500HD/3500HD.
why this one: Check whether the kit wires into a switch or runs off the tailgate. That is the difference between useful and annoying. GoRECON lists it at $199.95, and the fitment above is what the listing itself states, not a guess.
Bed Lighting · 2014-2019
RECON GMC Sierra & Chevy Silverado 3rd GEN 14-19 2500/3500 Red LED 3rd Brake Light Kit with White LED Cargo Lights - Clear Lens
fits 6.6L Duramax V8 (LML) · 6.6L Duramax V8 (L5P)
install
~30-60 min
pairs with: Bed Protection, Tailgate
number source
Bed lighting puts usable light in the bed so loading in the dark is not a phone-flashlight job. This one is the RECON GMC Sierra & Chevy Silverado 3rd GEN 14-19 2500/3500 Red LED 3rd Brake Light Kit with White LED Cargo Lights - Clear Lens, listed to fit the 2014-2019 GMC Sierra 2500HD/3500HD. The listing describes it as carrying a DOT or SAE marking.
why this one: Check whether the kit wires into a switch or runs off the tailgate. That is the difference between useful and annoying. GoRECON lists it at $179.95, and the fitment above is what the listing itself states, not a guess.

Bed Protection

Bed Protection · 2001-2026
BDK MT-600A Heavy-Duty Truck Bed Tailgate Mat, 60 in x 19.5 in
fits
install
20-30 minutes
pairs with: Floor Mats, Bed Lighting
requires: trimming to fit. BDK ships this mat at 60 by 19.5 inches as a universal trim-to-fit design, so on a midsize tailgate it needs cutting down with scissors before it will sit right. Mounting hardware is included and fitting it involves drilling.
number source
A thick rubber mat that covers the inside face of your tailgate. That is the surface that actually gets scratched when you slide things in and out of the bed. Universal, so you trim it with scissors and screw it down.
why this one: The only bed protection product we found under fifty dollars. A real full length bed mat starts around $115 because it is one big molded piece cut to a specific bed length. This one protects the part that takes the most abuse.
Bed Protection · 2001-2026
Cat CAMT-1509 Ultra Tough Heavy Duty Tailgate Mat
fits
install
20-30 minutes
pairs with: Floor Mats, Bed Lighting
requires: trimming to fit, and a bare metal tailgate. Cat ships this mat at 62 by 21 inches with cut guides marked at 17x54, 19x59, 20x60 and 21x62 inches, so it covers full-size and midsize gates but nearly always needs cutting with scissors or a utility knife. Cat states it is made for bare metal tailgates and is not compatible with plastic tailgates. Mounting hardware is included and fitting it involves drilling.
number source
A thicker, tougher version of the basic tailgate mat. It covers the inside face of the tailgate so loading and unloading does not chew up the paint. Universal, trim it to fit.
why this one: Heavier duty than the cheap mat and a brand name people recognize, which helps it sell. AutoZone runs about sixteen dollars over Amazon, so the comparison favors us.
Bed Protection · 2020-2026
Husky Liners Husky Liners 20-26 Silverado/Sierra 2500/3500 6.9ft CC/DC w/o MPTG Guardian Comfort Bed Liner - Full
fits 6.6L Duramax V8 (L5P) · 6.6L Duramax V8 (L5P, updated)
install
~30-60 min
pairs with: Floor Mats, Bed Lighting
number source
Bed covers, liners and mats keep the bed dry and stop cargo from chewing up the paint. This one is the Husky Liners Husky Liners 20-26 Silverado/Sierra 2500/3500 6.9ft CC/DC w/o MPTG Guardian Comfort Bed Liner - Full, listed to fit the 2020-2026 GMC Sierra 2500HD/3500HD with the 6.6L Duramax V8 (L5P) or 6.6L Duramax V8 (L5P, updated).
why this one: Measure your bed length before buying. Bed covers are the most commonly returned truck part because of a wrong bed size. SuspensionHouse lists it at $399.99, and the fitment above is what the listing itself states, not a guess.
Bed Protection · 2020-2026
Husky Liners Husky Liners 20-26 Chevrolet Silverado/GMC Sierra 2500/3500 6.9ft Bed CC/DC Guardian Comfort Bed Mat
fits 6.6L Duramax V8 (L5P) · 6.6L Duramax V8 (L5P, updated)
install
~30-60 min
pairs with: Floor Mats, Bed Lighting
number source
Bed covers, liners and mats keep the bed dry and stop cargo from chewing up the paint. This one is the Husky Liners Husky Liners 20-26 Chevrolet Silverado/GMC Sierra 2500/3500 6.9ft Bed CC/DC Guardian Comfort Bed Mat, listed to fit the 2020-2026 GMC Sierra 2500HD/3500HD with the 6.6L Duramax V8 (L5P) or 6.6L Duramax V8 (L5P, updated).
why this one: Measure your bed length before buying. Bed covers are the most commonly returned truck part because of a wrong bed size. SuspensionHouse lists it at $149.99, and the fitment above is what the listing itself states, not a guess.
Bed Protection · 2020-2026
Husky Liners Husky Liners 20-26 Chevrolet Silverado/GMC Sierra 2500/3500 8ft Bed Guardian Comfort Bed Mat
fits 6.6L Duramax V8 (L5P) · 6.6L Duramax V8 (L5P, updated)
install
~30-60 min
pairs with: Floor Mats, Bed Lighting
number source
Bed covers, liners and mats keep the bed dry and stop cargo from chewing up the paint. This one is the Husky Liners Husky Liners 20-26 Chevrolet Silverado/GMC Sierra 2500/3500 8ft Bed Guardian Comfort Bed Mat, listed to fit the 2020-2026 GMC Sierra 2500HD/3500HD with the 6.6L Duramax V8 (L5P) or 6.6L Duramax V8 (L5P, updated).
why this one: Measure your bed length before buying. Bed covers are the most commonly returned truck part because of a wrong bed size. SuspensionHouse lists it at $149.99, and the fitment above is what the listing itself states, not a guess.

Cat-Back

Cat-Back · 2024-2026
Banks Power Monster Exhaust System, 5in DPF-Back, Chrome Tip
fits 6.6L Duramax V8 (L5P, updated)
estimate pending research
$598
typical pricebuy at Banks Power Direct
install
Not published for this SKU (Banks cites ~1.5 hrs for the related 2017-2019 SKU 48996; not confirmed identical)
pairs with: Intake, Suspension
requires: Single Rear Wheel (SRW) only. Banks explicitly states this kit does not fit Dual Rear Wheel (dually) trucks.
number source
A 5-inch stainless steel exhaust that replaces everything from the diesel particulate filter (DPF) back, flowing better than the stock 4-inch system while leaving the DPF, catalyst and DEF/SCR emissions hardware completely stock.
why this one: The only 5-inch DPF-back system Banks publishes for the 2024-2026 Sierra HD, and its Exhaust Pressure Control Module is a documented SKU-specific feature that prevents false power-derate codes rather than a generic pipe swap. Honest downside: Banks states it does not fit Dual Rear Wheel trucks, so Sierra 3500HD dually owners are excluded.
Cat-Back · 2020-2022
Banks Power Monster Exhaust System, 5in DPF-Back, SideKick Tip
fits 6.6L Duramax V8 (L5P)
estimate pending research
$628
typical pricebuy at Banks Power Direct
install
Not published for this SKU
pairs with: Intake, Suspension
requires: Single Rear Wheel (SRW) only per Banks product title; dually not covered by this SKU.
number source
A 5-inch stainless steel DPF-back exhaust that exits out the side of the truck ahead of the rear wheel instead of out the back, leaving the DPF and DEF/SCR emissions hardware stock.
why this one: Banks quotes 89% less backpressure at the DPF and a 15% lower exhaust temperature during regen for this exact part number, and the side-exit SideKick tip keeps the pipe clear of a bumper-mounted hitch. Honest downsides: it is Single Rear Wheel only, and Banks was showing it backordered when the price was checked.
Cat-Back · 2017-2019
Banks Power Monster Exhaust System, 5in DPF-Back, Obround Tip
fits 6.6L Duramax V8 (L5P)
estimate pending research
$549
typical pricebuy at Banks Power Direct
install
Approximately 1.5 hours per Banks own install-time estimate; owners manual and install video included
pairs with: Intake, Suspension
requires: Fits SRW and DRW (dually). Covers DCSB, DCLB, CCSB, CCLB per Banks fitment table.
number source
A 5-inch stainless steel DPF-back exhaust with an obround slash-cut tip, covering every 2017-2019 Sierra HD cab and bed combination including dually trucks.
why this one: This is the only Banks HD exhaust in this lane that covers dually trucks, DCSB/DCLB/CCSB/CCLB plus DRW, so Sierra 3500HD dually owners are not locked out the way they are on the 2020-2022 and 2024-2026 kits, and it works with both stock and aftermarket fifth wheels. Honest downside: the obround tip is a plainer look than the side-exit SideKick used on the newer kits.
Cat-Back · 2011-2016
Banks Power Monster Exhaust System, 5in DPF-Back, SideKick Tip
fits 6.6L Duramax V8 (LML)
estimate pending research
$599
typical pricebuy at Banks Power Direct
install
Approximately 1.5 hours per Banks own install-time estimate; described as straightforward, simple tools
pairs with: Intake, Suspension
requires: Fits Double Cab Short/Long Bed, Crew Cab Short/Long Bed and Dually DRW. Does NOT fit Single Cab Long Bed. Sierra 3500 HD listed by Banks only through 2015; 2016 3500HD requires additional NOx sensor bung PN 52255, sold separately, professional welding required.
number source
A 5-inch stainless steel DPF-back exhaust with a side-exit SideKick tip for the LML-era Sierra HD, leaving the DPF and DEF/SCR emissions hardware stock.
why this one: One part number covers both the 2011-2014 GMT900 and 2015-2016 K2 Sierra HD bodies, and unlike the newer Banks kits it does fit dually trucks. Honest downsides: it does not fit Single Cab Long Bed at all, Banks lists Sierra 3500 HD coverage only through 2015, and a 2016 Sierra 3500HD needs an extra NOx sensor bung (PN 52255) welded in at your own cost.
Cat-Back · 2020-2022
Banks Power 2020-2022 Chevy/GMC 3500 6.6L Duramax, L5P, Dual Rear Wheel Only Monster Exhaust System
fits 6.6L Duramax V8 (L5P)
estimate pending research
install
~1-2 hrs, bolt-on
pairs with: Intake, Tune
number source
A cat-back exhaust replaces the pipes and muffler from the catalytic converter to the tip. It changes how the truck sounds and drops a little weight. This one is the Banks Power 2020-2022 Chevy/GMC 3500 6.6L Duramax, L5P, Dual Rear Wheel Only Monster Exhaust System, listed to fit the 2020-2022 GMC Sierra 2500HD/3500HD with the 6.6L Duramax V8 (L5P).
why this one: Cat-backs are a sound and looks upgrade first. Treat any power claim as unproven unless the maker publishes a dyno sheet. SDHQ Offroad lists it at $648.00, and the fitment above is what the listing itself states, not a guess.
Cat-Back · 2020-2022
Banks Power 2020-2022 Chevy/GMC 2500/3500 6.6L Duramax, L5P, Single Rear Wheel Only Monster Exhaust System
fits 6.6L Duramax V8 (L5P)
estimate pending research
install
~1-2 hrs, bolt-on
pairs with: Intake, Tune
number source
A cat-back exhaust replaces the pipes and muffler from the catalytic converter to the tip. It changes how the truck sounds and drops a little weight. This one is the Banks Power 2020-2022 Chevy/GMC 2500/3500 6.6L Duramax, L5P, Single Rear Wheel Only Monster Exhaust System, listed to fit the 2020-2022 GMC Sierra 2500HD/3500HD with the 6.6L Duramax V8 (L5P). The listing describes it as stainless steel.
why this one: Cat-backs are a sound and looks upgrade first. Treat any power claim as unproven unless the maker publishes a dyno sheet. SDHQ Offroad lists it at $628.00, and the fitment above is what the listing itself states, not a guess.
Cat-Back · 2011-2015
Banks Power 2011-2015 Chevy/GMC 2500/3500 + (2016 2500 Only) 6.6L Duramax, LML Monster Exhaust System
fits 6.6L Duramax V8 (LML)
estimate pending research
install
~1-2 hrs, bolt-on
pairs with: Intake, Tune
number source
A cat-back exhaust replaces the pipes and muffler from the catalytic converter to the tip. It changes how the truck sounds and drops a little weight. This one is the Banks Power 2011-2015 Chevy/GMC 2500/3500 + (2016 2500 Only) 6.6L Duramax, LML Monster Exhaust System, listed to fit the 2011-2015 GMC Sierra 2500HD/3500HD with the 6.6L Duramax V8 (LML). The listing describes it as stainless steel.
why this one: Cat-backs are a sound and looks upgrade first. Treat any power claim as unproven unless the maker publishes a dyno sheet. SDHQ Offroad lists it at $599.00, and the fitment above is what the listing itself states, not a guess.
Cat-Back · 2024-2026
Banks Power 2024-2026 Chevy/GMC 2500/3500 6.6L Duramax, L5P Monster Exhaust System
fits 6.6L Duramax V8 (L5P, updated)
estimate pending research
install
~1-2 hrs, bolt-on
pairs with: Intake, Tune
number source
A cat-back exhaust replaces the pipes and muffler from the catalytic converter to the tip. It changes how the truck sounds and drops a little weight. This one is the Banks Power 2024-2026 Chevy/GMC 2500/3500 6.6L Duramax, L5P Monster Exhaust System, listed to fit the 2024-2026 GMC Sierra 2500HD/3500HD with the 6.6L Duramax V8 (L5P, updated). The listing describes it as stainless steel.
why this one: Cat-backs are a sound and looks upgrade first. Treat any power claim as unproven unless the maker publishes a dyno sheet. SDHQ Offroad lists it at $598.00, and the fitment above is what the listing itself states, not a guess.
Cat-Back · 2017-2019
Banks Power 2017-2019 Chevy/GMC 2500/3500 6.6L Duramax, L5P DCSB, DCLB, CCSB, CCLB including Dually Models Monster Exhaust System
fits 6.6L Duramax V8 (L5P)
estimate pending research
install
~1-2 hrs, bolt-on
pairs with: Intake, Tune
number source
A cat-back exhaust replaces the pipes and muffler from the catalytic converter to the tip. It changes how the truck sounds and drops a little weight. This one is the Banks Power 2017-2019 Chevy/GMC 2500/3500 6.6L Duramax, L5P DCSB, DCLB, CCSB, CCLB including Dually Models Monster Exhaust System, listed to fit the 2017-2019 GMC Sierra 2500HD/3500HD with the 6.6L Duramax V8 (L5P). The listing describes it as stainless steel.
why this one: Cat-backs are a sound and looks upgrade first. Treat any power claim as unproven unless the maker publishes a dyno sheet. SDHQ Offroad lists it at $549.00, and the fitment above is what the listing itself states, not a guess.
Cat-Back · 2006-2007
Diamond Eye Performance Diamond Eye K5123A 5 inch Aluminized Cat-Back No Tip Exhaust with Turbo Direct Pipe | 2006-2007 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LBZ
fits 6.6L Duramax V8 (LBZ) · 6.6L Duramax V8 (LMM)
estimate pending research
install
~1-2 hrs, bolt-on
pairs with: Intake, Tune
number source
A cat-back exhaust replaces the pipes and muffler from the catalytic converter to the tip. It changes how the truck sounds and drops a little weight. This one is the Diamond Eye Performance Diamond Eye K5123A 5 inch Aluminized Cat-Back No Tip Exhaust with Turbo Direct Pipe | 2006-2007 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LBZ, listed to fit the 2006-2007 GMC Sierra 2500HD/3500HD with the 6.6L Duramax V8 (LBZ) or 6.6L Duramax V8 (LMM).
why this one: Cat-backs are a sound and looks upgrade first. Treat any power claim as unproven unless the maker publishes a dyno sheet. Alligator Performance lists it at $585.95, and the fitment above is what the listing itself states, not a guess.
Cat-Back · 2001-2004
MBRP Exhaust MBRP 4-Inch Cat-Back Exhaust Tour Profile Single Side Exit 01-04 GM 6.6L Duramax LB7
fits 6.6L Duramax V8 (LB7) · 6.6L Duramax V8 (LLY)
estimate pending research
install
~1-2 hrs, bolt-on
pairs with: Intake, Tune
number source
A cat-back exhaust replaces the pipes and muffler from the catalytic converter to the tip. It changes how the truck sounds and drops a little weight. This one is the MBRP Exhaust MBRP 4-Inch Cat-Back Exhaust Tour Profile Single Side Exit 01-04 GM 6.6L Duramax LB7, listed to fit the 2001-2004 GMC Sierra 2500HD/3500HD with the 6.6L Duramax V8 (LB7) or 6.6L Duramax V8 (LLY).
why this one: Cat-backs are a sound and looks upgrade first. Treat any power claim as unproven unless the maker publishes a dyno sheet. Diesel Power Products lists it at $664.99, and the fitment above is what the listing itself states, not a guess.
Cat-Back · 2006-2007
MBRP Exhaust MBRP 4" Cat-Back, Tour Profile, Single Side Exit Exhaust 06-07 GM 6.6L Duramax LLY
fits 6.6L Duramax V8 (LBZ) · 6.6L Duramax V8 (LMM)
estimate pending research
install
~1-2 hrs, bolt-on
pairs with: Intake, Tune
number source
A cat-back exhaust replaces the pipes and muffler from the catalytic converter to the tip. It changes how the truck sounds and drops a little weight. This one is the MBRP Exhaust MBRP 4" Cat-Back, Tour Profile, Single Side Exit Exhaust 06-07 GM 6.6L Duramax LLY, listed to fit the 2006-2007 GMC Sierra 2500HD/3500HD with the 6.6L Duramax V8 (LBZ) or 6.6L Duramax V8 (LMM).
why this one: Cat-backs are a sound and looks upgrade first. Treat any power claim as unproven unless the maker publishes a dyno sheet. Diesel Power Products lists it at $634.99, and the fitment above is what the listing itself states, not a guess.
Cat-Back · 2007-2019
PPE PPE 117010350 Stainless Steel Cat-Back Performance Exhaust System Polished Tip | 2007.5-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
fits 6.6L Duramax V8 (LBZ) · 6.6L Duramax V8 (LMM) · 6.6L Duramax V8 (LML) · 6.6L Duramax V8 (L5P)
estimate pending research
install
~1-2 hrs, bolt-on
pairs with: Intake, Tune
number source
A cat-back exhaust replaces the pipes and muffler from the catalytic converter to the tip. It changes how the truck sounds and drops a little weight. This one is the PPE 117010350 Stainless Steel Cat-Back Performance Exhaust System Polished Tip | 2007.5-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax, listed to fit the 2007-2019 GMC Sierra 2500HD/3500HD. The listing describes it as stainless steel.
why this one: Cat-backs are a sound and looks upgrade first. Treat any power claim as unproven unless the maker publishes a dyno sheet. Alligator Performance lists it at $539.99, and the fitment above is what the listing itself states, not a guess.

Gains shown are manufacturer claims, labeled community estimates, or independent tests, as tagged on each part. Nothing here is a guarantee. Prices are list prices and can lag the retailer; confirm at checkout. Parts flagged for warranty or emissions deserve a conversation with your shop before you buy. See our affiliate disclosure.