Product Description
DIAMOND EYE K4338S-RP is a 4.0" T409 stainless cat-back system for the 2003.5–2007 Ford F-250/F-350 6.0L Powerstroke. It replaces the muffler with a straight pipe for lower backpressure and a more aggressive tone while keeping a clean, single passenger-side exit.
FAQ: WILL THIS FIT MY 6.0L SUPER DUTY?
Yes—this kit is designed for 2003.5–2007 Ford F-250/F-350 6.0L Powerstroke (cat-back), single side exit. Always confirm model year split (2003.5+) and cab/bed configuration before ordering.
FAQ: DOES IT INCLUDE A MUFFLER?
No. The -RP version uses a replacement pipe (no muffler) for a straight-through sound and maximum flow.
FAQ: MATERIAL / FINISH?
Constructed from 409 stainless steel for durability in high-heat, corrosive environments.
Fitment Details
- Vehicle: 2003.5–2007 Ford F-250/F-350 Super Duty, 6.0L Powerstroke diesel
- Configuration: Cat-back, single passenger-side exit, 4.0" tubing
- Notes: Replaces muffler with straight pipe (no muffler). Verify cab/bed length for correct hangers.
Cross-Reference / Related Diamond Eye Options
- K4338S — Same kit with muffler (stainless)
- K4338A-RP — Aluminized steel, no muffler
- K4340S-RP — Stainless, no muffler, split rear/side exit
Specifications
| Brand | Diamond Eye Performance |
|---|---|
| MPN | K4338S-RP |
| UPC | 841963107807 |
| GTIN | 0841963107807 (UPC-A) |
| System Type | 4.0" cat-back, single side exit |
| Material | T409 stainless steel |
| Muffler | No (replacement/straight pipe) |
| Vehicle Fit | 2003.5–2007 Ford F-250/F-350 6.0L Powerstroke |
| Package Dimensions | 51.5" x 20.8" x 12.5" (typical boxed) |
| Shipping Info | Ships oversized ground; contents include pipes, hangers, clamps, and hardware per kit |
| Prop 65 | WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov |
