Product Description
DIAMOND EYE K4338A-RP is a 4.0" aluminized steel, no-muffler cat-back exhaust engineered for the 2003.5–2007 Ford F-250/F-350 Super Duty 6.0L Powerstroke. The straight-through design reduces backpressure for quicker spool and a stronger exhaust note, while mandrel bends maintain flow through the entire system.
FAQ: WILL THIS FIT MY TRUCK?
Yes—this kit is built for 2003.5, 2004, 2005, 2006 & 2007 Ford F-250/F-350 Super Duty models with the 6.0L Powerstroke. It is a 4" cat-back, single passenger-side exit system. Catalog listings cover all cab/bed lengths; always verify your wheelbase and hanger locations before purchase.
FAQ: WHAT’S INCLUDED?
Cat-back tubing, over-axle tail section (single side exit), clamps, and hardware. Reuses factory catalytic converter location.
FAQ: STAINLESS VS. ALUMINIZED?
This -A kit uses aluminized steel for excellent value. If you want corrosion-resistant 409 stainless, see the stainless variants in the Cross-Reference section below.
Fitment Details
- Years/Models: 2003.5–2007 Ford F-250 & F-350 Super Duty, 6.0L Powerstroke
- Configuration: 4" cat-back, single passenger-side exit, no muffler (muffler-delete)
- Emissions note: Installs behind the catalytic converter (retains factory cat)
Cross Reference Items (on CPP Diesel)
- K4338A – 4" Aluminized, WITH Muffler, Single Exit
- K4338S – 4" Stainless, WITH Muffler, Single Exit
- K4338S-RP – 4" Stainless, NO Muffler, Single Exit
Specifications
| Brand | Diamond Eye Performance |
|---|---|
| MPN | K4338A-RP |
| UPC | 841963107722 |
| GTIN | 0841963107722 (UPC-A) |
| Tubing Diameter | 4.0" |
| Material | Aluminized steel |
| System Type | Cat-Back, single side exit |
| Includes Muffler | No (muffler-delete) |
| Shipping | Ships Free (Lower 48). Carton approx. 52" x 13" x 21". |
| Ship Weight | ~45–56 lb (typical for this kit size) |
| Prop 65 | WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov |
