Product Description
DIAMOND EYE K4319S-RP is a 4.0" T409 stainless turbo-back exhaust system with a straight-through muffler delete pipe for maximum flow and an aggressive tone. Engineered for the 7.3L Power Stroke, the kit replaces the factory downpipe and exhaust with mandrel-bent tubing for lower EGTs and improved throttle response.
FAQ: WILL THIS FIT MY TRUCK?
Designed for 2000–early 2003 Ford F-250/F-350 Super Duty 7.3L Power Stroke (most listings show 1999–2003.5). Fits automatic transmission, non-catalyst models and all cab/bed lengths. Always verify emissions equipment and model year split before ordering.
FAQ: WHAT MATERIAL IS IT?
Made from T409 stainless steel for excellent heat resistance and long service life in harsh climates.
FAQ: DOES IT INCLUDE A MUFFLER?
No—RP = Muffler Replacement Pipe (straight pipe). Choose K4319S if you prefer the version with a muffler.
FAQ: IS THERE A CARB/EO NOTE?
Diamond Eye lists an exempt diesel downpipe (EO #D-778-1) for this family. Check local/state regulations for street use and verify applicability to your configuration.
Fitment Details
- Engine/Platform: 7.3L Power Stroke, Ford F-250/F-350 Super Duty
- Years: 2000–early 2003 primary coverage (many retailers list 1999–2003.5; verify build date)
- Transmission: Automatic
- Emissions Config: Non-catalyst models
- Exit: Single passenger-side
- Tubing Diameter: 4.0" (turbo-back)
Cross-Reference & Related Diamond Eye Items
- K4319S — Same system with muffler (stainless)
- K4319S-TDRP — Turn-down rear pipe variant (stainless)
- K4321S-RP — Dual-exit stainless turbo-back, muffler delete
- K4318S-RP — Superseded/related part number sometimes referenced by retailers
Specifications
| Brand | Diamond Eye Performance |
|---|---|
| MPN | K4319S-RP |
| UPC | 696555417433 |
| GTIN | 696555417433 (UPC-A / GTIN-12) |
| Material | T409 Stainless Steel |
| Configuration | Turbo-back, single-side exit, muffler delete (RP) |
| Tubing Size | 4.0" |
| Vehicle Fit | 00–early 03 Ford F-250/F-350 7.3L, auto trans, non-catalyst |
| Shipping Weight | ~68 lb |
| Package Dimensions | ~52" L x 21" H x 13" W |
| Prop 65 | WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov |
