Chevy Silverado 2500HD/3500HD parts.

pairs with: Intake, Suspension

why this one: This is the only true 5-inch DPF-back system Banks publishes for the 2024-2026 L5P, and its patented Exhaust Pressure Control Module (U.S. Patent 12618353) is a documented, SKU-specific feature (prevents false power-derate codes) rather than a generic pipe swap.

also carried: Performance Truck Products

pairs with: Intake, Suspension

why this one: Banks specific claim of 89% less backpressure at the DPF and a 15% exhaust-temperature reduction during regen is sourced directly to this SKUs own product page, not a generic series-wide number.

also carried: Diesel Power Products

pairs with: Intake, Suspension

why this one: Unlike the 2020-2022/2024-2026 SKUs, this one explicitly covers DCSB/DCLB/CCSB/CCLB configurations AND dually (SRW+DRW) models per Banks own fitment table - the broadest single-SKU coverage found for any year range this session, and compatible with stock/aftermarket fifth wheels and airbags per the same page.

also carried: Diesel Power Products

pairs with: Intake, Suspension

why this one: This single SKU is the only Banks DPF-back option found spanning both the GMT900 (2011-2014) and K2 (2015-2016) HD chassis generations for the same LML engine - Banks own fitment table does not split by chassis, only by cab/bed config and a 2016-3500-specific caveat, which is noted rather than assumed away.

also carried: Performance Truck Products

pairs with: Tune, Head gaskets

why this one: This is the standard answer on a Duramax that has been tuned or turned up, because the factory torque-to-yield bolts start letting the heads lift and push gaskets once boost climbs. One kit covers 2001-2016 in ARP2000 material rated at 220,000 psi tensile. The downside is brutal and worth saying plainly: the cylinder heads have to come off to fit them, so this is a shop job measured in days, and the smart time to do it is when the heads are already off for something else.

also carried: JEGS, HSP Diesel, Dale's Super Store

pairs with: Deep transmission pan, Tune

why this one: Pick this over a bar-and-plate cooler if you want the easier install and a warranty you can actually use, since Mishimoto rates it an easy install and backs it with their lifetime warranty. Two honest catches: Silverado grilles need minor trimming to clear it, and Mishimoto publishes core volume and fin area gains but no measured temperature drop, so you are buying on spec sheet rather than test data.

pairs with: Deep transmission pan, Tune

why this one: PPE publishes hard numbers for this one instead of adjectives: a 395 cubic inch core, 3.28 times the stock volume, 80 percent more frontal area, and up to 45F lower fluid temperature. The downside is bulk. It is a thick core sitting in front of the radiator and condenser, so it packs with bugs and road grit faster than stock and needs blowing out.

also carried: Thoroughbred Diesel

pairs with: Transmission cooler

why this one: This is the cheapest meaningful transmission upgrade on a Duramax, because more fluid means more thermal mass and slower heat buildup, and the drain plug means you can change fluid without dropping the pan and wearing it. It is not a substitute for a real cooler though. Extra fluid slows heat down, it does not remove it, so pair it with a cooler if you tow heavy. Gasket is sold separately.

also carried: JEGS, Thoroughbred Diesel, Pure Diesel Power

pairs with: Headlight, Light Bar

why this one: The easiest real lighting upgrade on this truck, because it uses the factory fog opening, the factory switch and the factory plug. Choose the Pro over the cheaper Sport if you actually drive dark rural roads; step up to the Max only if you want the brightest and will accept the higher price. The important limitation is in Diode Dynamics' own wording: this is a replacement for OEM fog lamps, so a truck that never had fog lights needs their standalone wiring harness on top.

pairs with: Fuel filter, CP3 conversion

why this one: The LML's CP4 injection pump fails when it runs starved or dry, and when it goes it sends metal debris through the entire fuel system, injectors included. Keeping positive pressure at the CP4 inlet so it is never starved is far cheaper insurance than a full fuel system replacement. Buy the right one and read this twice: this part number is the SHORT BED truck, long bed uses a different assembly, and Fleece states it is not compatible with S&B replacement fuel tanks.

also carried: Diesel Power Products

pairs with: Lift pump

why this one: A lift pump lowers the odds the CP4 fails. This eliminates the CP4 entirely. The CP3 is the pump Duramax used before 2011 and it does not have the CP4's habit of grenading itself and filling the fuel system with metal, so this is the permanent fix rather than a mitigation. Two things make it worth the money over a bare pump swap: it carries CARB EO D-834-1 so it stays 50-state legal, and Fleece states no tuning is required to run it. It is expensive and it is a full day under the hood, so it makes the most sense on a truck you plan to keep.

also carried: Diesel Power Products

pairs with: Turbos, Tune

why this one: Factory Duramax up-pipes use a bellows joint that cracks and leaks as it ages and heat-cycles, which costs you boost and makes the truck sound like it has an exhaust leak, because it does. This kit fixes that failure point and opens up flow at the same time. Be clear-eyed about it though: PPE publishes no hp or EGT number for this kit, so treat it as a repair-and-improve part rather than a power part, and the manifolds sit buried against the firewall so it is a knuckle-busting job.

pairs with: Taillight, Fog Light

why this one: The premium option if you want the projector-and-light-tube look and want it to be street legal, which is what separates AlphaRex from cheap eBay-grade housings that scatter light everywhere. Two things to check before you buy: AlphaRex lists these as replacing factory halogen headlights, so an LED-equipped truck is a different conversation, and at $1,295 this is roughly twice the price of the ANZO projector set already in the catalog for the same years.

pairs with: Taillight

why this one: This is the current-generation (T1-platform HD) ANZO headlight in this catalog, with full LED light sources rather than the halogen-based plank-style unit sourced for the prior K2 generation (see LT-ANZO-111359-1519) - a genuine generation-appropriate distinction.

pairs with: Taillight

why this one: ANZOs own page explicitly restricts this to "Halogen Models Only" and states it "does not fit models with OE LED Headlight system" - a real, sourced fitment restriction carried into this rows scope rather than glossed over.

pairs with: Taillight

why this one: Fills the oldest engine-generation lighting gap in this catalog (GMT900 HD, LMM/LML era, 2007-2014) - the same plank-style design family as the newer K2-era part (LT-ANZO-111359-1519) but a distinct SKU/price for the older body style, confirmed via ANZOs own dedicated Silverado 2500HD/3500HD collection page.

pairs with: Cat-Back, Tire

why this one: This is the only Momentum HD SKU aFe publishes specifically for the LML engine (2011-2016), backed by a real dyno-chart gain figure (+22 hp/+57 lb-ft) rather than a generic marketing claim - the sealed housing and auxiliary scoop design also carries a documented 99.59% filtration efficiency figure from independent testing per aFes own page.

also carried: Thoroughbred Diesel

pairs with: Cat-Back, Tire

why this one: Fills the K2-HD-chassis L5P year gap (2017-2019) between the LML Momentum HD intake and the 2020-2026 Momentum HD intake in this catalog - same aFe Quantum-line design used across the Duramax lineup, priced lower than Momentum HD because it ships without a documented dyno gain for this application.

pairs with: Cat-Back, Tire

why this one: This is the current-generation Momentum HD SKU aFe publishes for 2020-2026 T1-platform HD trucks, backed by a real dyno-chart gain figure (+16 hp/+44 lb-ft, smaller than the older LML SKUs +22/+57 - a real, sourced difference, not normalized away) and a stated 710 CFM flow figure.

also carried: Thoroughbred Diesel

pairs with: Intercooler, Cat-Back

why this one: S&B is the pick here if you care about filtration as much as flow, because they publish both numbers for this exact kit rather than just the flashy one: 53.06 percent more airflow and 99.27 percent filtration efficiency. It also carries CARB Exempt ID D-590-15, so it stays street legal in all 50 states, which not every intake on this truck can say. The honest tradeoff is that no horsepower figure is published, and on a stock-tuned diesel an intake mostly buys you sound and airflow headroom for later rather than a number today.

also carried: Diesel Power Products

pairs with: Intake, Tune

why this one: The real reason to do this on an 06-10 is the factory plastic end tank, which can split under raised boost and dump your charge air in one go. Banks replaces both end tanks with aluminum and adds 25 percent more core flow volume, so you fix the failure point and gain flow in the same job. Be realistic about the effort and the payoff: Banks own estimate is 6 hours with the front end apart, and they publish no horsepower number for it, so this is insurance and consistency rather than a dyno gain.

also carried: Diesel Power Products

pairs with: Fog Light, Taillight

why this one: The most useful lighting purchase for anyone who tows after dark, and it is the cheapest lighting item here. It aims a genuinely wide spread right behind the bumper rather than throwing a spot down the road. The trade-offs are that it is rear-facing only so it does nothing for driving at night, and unlike the plug-and-play fog kit you are routing a harness the length of the truck, which is why this is the longer install of the two.

also carried: AmericanTrucks

pairs with: Suspension, Tire

why this one: Specifically the "Ultimate" trim of Air Lifts LoadLifter 5000 line (adds the internal jounce bumper over the base LoadLifter 5000), sourced with a real 2011-2019 2500HD/3500HD 2WD/4WD fitment confirmation rather than assumed from the base product line.

also carried: DesertRat

pairs with: Suspension, Wheel, Tire

why this one: Pick this over a tie-rod-only kit when the whole front steering assembly is already worn, or when you are running 35s and a lift and want to stop chasing steering slop for good. It costs roughly twice what a tie-rod-only kit does and is more work to install since the center link comes out too, so it is overkill on a stock-height truck with tight factory parts.

pairs with: Suspension, Wheel, Tire

why this one: This is the one for a first-generation Duramax; the 2011-and-up kits do not fit these trucks and the part numbers are genuinely different. On a twenty-year-old truck the tie rods are usually not the only tired part, so budget for an idler arm and ball joints in the same visit or you will still have a loose front end after this goes on.

pairs with: Suspension, Tire, Wheel

why this one: Choose this over a cheap crank-only leveling kit because the included upper control arms fix the ball joint angle that torsion cranking throws off, which is what kills ball joints and ride quality on cranked trucks. The trade-off is money and time: a bare torsion key kit costs a fraction of this and installs in an hour. This one is for owners who plan to keep the truck and drive it loaded.

also carried: AmericanTrucks

pairs with: Suspension, Tire, Wheel

why this one: This is the correct part number if your truck is the 2020-or-newer body; the 2011-2019 kit will not bolt on. Compared to that older kit it is cheaper and clears a bigger tire, but it uses standard upper control arms rather than the SM Series arms Cognito sells alongside it, so if you want the beefier arms you pay more for the SM version.

pairs with: Suspension, Tire

why this one: The only item in this list that makes an empty HD ride better rather than making it sit higher or hold up harder. It is also the shortest install here at Cognito's claimed one hour. The honest downside is that a softer spring rate is a softer spring rate: if you routinely run a heavy front-mounted plow or a big bumper and winch, stay on the factory bars.

pairs with: Suspension, Tire, Wheel

why this one: Only worth buying if you actually have the problem, which on a Duramax usually means a tuned truck, big tires, or heavy towing off the line. Cognito's version is adjustable after install and does not restrict suspension travel the way a cheap bolt-on bar can, but at roughly $1,750 it is the most expensive part on this list by a wide margin. A stock-power truck with factory tires will not notice the difference.

pairs with: Suspension, Tire

why this one: The straightforward rear upgrade for a truck that is not lifted, since it is valved for the 0 to 1 inch range and needs no other parts. It is also the cheapest Fox on this list. What it does not do is give you any adjustment: there is no reservoir and no external knob, so if you want to tune the ride you want the Performance Elite 2.5 instead.

pairs with: Suspension, Tire, Wheel

why this one: The pick if you already run a leveling kit on a 2020-or-newer HD and want to tune the ride yourself rather than accept whatever a fixed shock gives you. Two honest catches: Fox states an aftermarket upper control arm is required, which is an extra purchase on top of an already expensive shock, and at roughly $1,680 this is a serious spend for a truck that mostly sees pavement.

pairs with: Suspension, Wheel, Tire

why this one: The cheapest way to fix the single most common steering complaint on a Duramax HD, because it swaps only the two rods and reuses your factory center link. Kryptonite states these are pre-greased and need re-greasing every 5,000 to 7,000 miles, so if you would rather never touch a grease gun again this is the wrong pick. It also does nothing for a worn center link or idler arm, so if those are already sloppy you need the bigger kit instead.

also carried: Thoroughbred Diesel

pairs with: Tire, Wheel

why this one: Uses the factory OE torsion keys (works with OE part numbers 84461807 or 84634344) rather than a full replacement, and ReadyLift explicitly rates it to support up to 35-inch tires (20x9 +18 to 0 offset) - a specific, sourced compatibility spec rather than a generic "fits 35s" claim.

also carried: Switch Suspension

pairs with: Tire, Wheel

why this one: Step-up variant of the base leveling kit (row above, same fitment years) for buyers who also want a matched shock upgrade rather than reusing worn factory shocks after leveling - a genuine, distinct SKU rather than a duplicate, priced accordingly ($1,199.95 vs $209.95).

pairs with: Suspension

why this one: This is the one ReadyLift product found this session that spans BOTH the 2011-2014 GMT900 and 2015-2019 K2 HD chassis generations in a single SKU (2011-2019 fitment) - a real cross-generation part, unlike the leveling kits which are chassis-specific (2020-2026 T1 only).

pairs with: Headlight, Light Bar

why this one: The upgrade pick over the ANZO tail lights already in the catalog for these years, mainly for the switchable red-to-amber turn signal and the LUXX light signature. The catch is the ordering: AlphaRex lists five converter options at the base price plus $65 to $105, and picking the wrong one for your year and factory bulb type means bulb-out warnings on the dash. Know whether your truck has halogen or LED tails before you order.

pairs with: Headlight

why this one: ANZOs own page explicitly restricts this to trucks with factory HALOGEN bulbs and states incompatibility with factory LED taillights or the Side Blind Zone Alert option - a real, sourced fitment restriction kept in this rows scope.

pairs with: Headlight

why this one: ANZOs own combined product title explicitly lists GMC Sierra 2500HD/3500HD Dually 2015-2019 alongside the Chevrolet fitment - real, sourced cross-make compatibility (kept as one Chevrolet-primary row per this catalogs no-duplicate convention, with the GMC coverage noted here rather than a separate row) - "Will not work with OE Factory LED Tail Lights" per ANZOs own spec.

also carried: Beefcake Racing

pairs with: Headlight

why this one: ANZOs own product title explicitly covers BOTH Chevrolet Silverado and GMC Sierra (1500/2500HD/3500HD) for this generation in one SKU - a real, sourced dual-make part, and a low-cost, easy-install accessory addition alongside the higher-cost headlight/taillight assemblies sourced for this same generation.

pairs with: Wheel, Suspension

why this one: This session specifically sourced the 121/118Q Load Range E version of this size (MPN 28516612) rather than the lighter 116/113Q version (MPN 59000360, ~$85 cheaper) also found at the same retailer, since Load Range E is the correct rating for HD truck GVWR - a deliberate, sourced choice rather than picking the cheapest listing.