MBRP 4" Armor Plus Turbo Downpipe for 6.7L Powerstroke | Ford F-250–F-450 | FS9CA459

Upgrade exhaust flow while maintaining emissions compliance with the MBRP 4-Inch Armor Plus Turbo Downpipe for 6.7L Powerstroke Ford Super Duty trucks. Designed for cab and chassis configurations, this downpipe replaces the restrictive factory unit to improve turbo efficiency and throttle response. Constructed from T409 stainless steel, it delivers excellent durability and corrosion resistance. Featuring CARB EO approval, this downpipe is 50-state legal and backed by MBRP’s lifetime warranty for long-term reliability.

Product Specifications

• Brand: MBRP

• Part Number: FS9CA459

• Product Type: Turbo Downpipe

• Exhaust Series: Armor Plus

• Pipe Diameter: 4"

• Material: T409 Stainless Steel

• Engine: 6.7L Powerstroke Diesel

• Vehicle Type: Diesel

• Emissions Compliance: CARB Legal

• CARB EO Number: D-763-1

• Universal: No (Vehicle-Specific Fit)

• Warranty: Lifetime Manufacturer Warranty

Vehicle Fitment

• Ford F-250 Super Duty

  • 2011–2014

  • 2015 (Cab & Chassis Only)

• Ford F-350 Super Duty

  • 2011–2014

  • 2015 (Cab & Chassis Only)

• Ford F-450 Super Duty

  • 2011–2014

  • 2015 (Cab & Chassis Only)

Note: Fits cab and chassis models only with 6.7L Powerstroke engine.