MBRP Exhaust 4-Inch, Armor Plus Downpipe, FS9CA459 | 2011-2014 Ford F-250/F-350/F-450 | 2015-2015 Ford F-250/F-350/F-450

Fits 2011-2014 6.7L Power Stroke V8 (2011-2014 calibration)

MBRP Exhaust 4-Inch, Armor Plus Downpipe, FS9CA459 | 2011-2014 Ford F-250/F-350/F-450 | 2015-2015 Ford F-250/F-350/F-450 for 2011-2014 Ford F-450 Super Duty (6.7L Power Stroke V8 (2011-2014 calibration))

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gain
no published figure
price
$384.99
at MBRP Direct
about its usual price

Price tracked 6 times since Sep 11, 2026 across the stores we check daily: low $384.99, high $384.99, currently $384.99.

low $384.99 · high $384.99 since Sep 11, 2026, across the stores we check daily
install
3/5 difficulty · ~2-4 hrs
shipping weight
12 lbs
listed by MBRP Exhaust, box included · replaces a factory part, adds only the difference

where to buy · 2 retailers tracked

  • MBRP Directbest pricechecked Oct 22$384.99view
  • Rudy's Performance Partschecked Oct 18$384.99view

A downpipe is the section of exhaust bolted straight to the turbo. A wider one lets exhaust leave the turbo with less back pressure. This one is the MBRP 4-Inch, Armor Plus Downpipe, FS9CA459 | 2011-2014 Ford F-250/F-350/F-450 | 2015-2015 Ford F-250/F-350/F-450, listed to fit the 2011-2014 Ford F-450 Super Duty with the 6.7L Power Stroke V8 (2011-2014 calibration).

why this one — Check your local emissions rules before buying. A downpipe change is the part most likely to affect an inspection. MBRP Direct lists it at $384.99, and the fitment above is what the listing itself states, not a guess.

No published gain figure for this part, and nothing here is a guarantee. Price is a list price and can lag the retailer; confirm at checkout. See how we check a price and our affiliate disclosure.

Independent site. Not affiliated with, endorsed by, or sponsored by any vehicle manufacturer, parts manufacturer, or retailer named on this site. Vehicle and brand names are used only to describe compatibility. Gains shown are manufacturer claims, community estimates, or independent tests, labeled by source on every part, and are not guarantees.