Product Description
Unlock smoother exhaust flow and lower EGTs on your 6.4L with the MBRP FS9CA455 4" turbo down pipe. Built from corrosion-resistant T409 stainless and engineered specifically for 2008–2010 Ford Super Duty 6.4L trucks, this bolt-on down pipe improves efficiency and sound while retaining emissions compliance (EO # D-763-1).
Fitment
- 2008, 2009, 2010 Ford F-250 Super Duty 6.4L Power Stroke (all cab/bed)
- 2008, 2009, 2010 Ford F-350 Super Duty 6.4L Power Stroke
- 2008, 2009, 2010 Ford F-450 Super Duty 6.4L Power Stroke
Key Features
- T409 stainless steel construction
- 4" diameter for improved flow
- Direct bolt-on design with clear instructions
- Emissions EO # D-763-1 (where applicable)
Cross-Reference / Alternatives (MBRP-Only)
- Aluminized version: MBRP FALCA455 (4" Aluminized)
- Alternate stainless listing: MBRP FS9455 (T409 Stainless)
- Related system with down-pipe/filter-back: MBRP S6282AL (4" Filter-Back + Down Pipe)
What’s Included
- (1) 4" T409 stainless turbo down pipe
- Required clamps/hardware (per MBRP kit contents)
- Install instructions
Helpful Notes
- Professional installation recommended; verify local emissions compliance.
- Pairs well with a free-flowing filter-back system for maximum gains.
Will this down pipe fit my exact 6.4L trim?
Yes—MBRP specifies fitment for 2008–2010 F-250/F-350/F-450 6.4L models. Always verify by year/engine before ordering.
Is the FS9CA455 emissions compliant?
The product page lists EO # D-763-1 for this 6.4L application. Check your state’s inspection rules for confirmation.
What’s the difference between FS9CA455 and FALCA455?
FS9CA455 is T409 stainless for added corrosion resistance; FALCA455 is aluminized steel at a lower price point. Both are 4" and fit 2008–2010 6.4L trucks.
Do I need tuning after installing this?
Not typically for a stock-location down pipe. Tuning is optional and depends on overall build goals.
Can I combine this with an MBRP filter-back system?
Yes—pairing with an MBRP filter-back (e.g., S6282AL) complements flow and sound.
