Product Description
DIAMOND EYE K4376S is a 4.0" 409 stainless DPF-back (filter-back) exhaust for the 2011–2014 Ford F-250/F-350 6.7L Powerstroke. It replaces the factory post-DPF tubing with mandrel-bent 4" stainless for lower backpressure and a cleaner, more authoritative tone. Includes a vented stainless tip. (Excludes single-cab models.)
FAQ: WILL THIS FIT MY TRUCK?
Designed for 2011–2014 Ford F-250/F-350, 6.7L Powerstroke. Manufacturer notes excludes single cabs. Always verify year/engine/cab configuration before ordering.
FAQ: WHAT’S INCLUDED?
409 stainless 4" mandrel-bent tubing, clamps/hardware, and a vented stainless tip. Re-uses the factory DPF—no emissions tampering required.
FAQ: STAINLESS VS. ALUMINIZED?
K4376S is stainless for maximum corrosion resistance in wet or salted climates. The K4376A aluminized version offers a lower-cost alternative with similar layout.
Fitment Details
- Platform: Ford Super Duty F-250/F-350
- Engine: 6.7L Powerstroke Diesel
- Years: 2011, 2012, 2013, 2014
- Configuration Notes: DPF-back, single-side exit; excludes single-cab
Cross Reference Items
- K4376A — Aluminized steel version (same layout/fit).
Specifications
| Brand | Diamond Eye Performance |
|---|---|
| MPN | K4376S |
| System Type | DPF-Back (Filter-Back), single side exit |
| Tubing Diameter | 4.0" |
| Material | 409 Stainless Steel |
| Tip | Vented stainless tip (included) |
| UPC | 841963108903 |
| GTIN | 0841963108903 (UPC-A) |
| Shipping Weight | ~58 lb |
| Package Dimensions | 52" (L) x 13" (W) x 21" (H) |
| Emissions Note | Retains factory DPF; not CARB exempt for aftermarket performance use in CA where applicable. |
| Prop 65 | Always consult P65Warnings.ca.gov for the latest guidance. |
