Product Description
DIAMOND EYE K4236S is a 4.0" T409 stainless cat-back, single-in/dual-out exhaust engineered for the 2004.5–2007.5 Ram 2500/3500 5.9L Cummins (all cabs/beds). The system uses mandrel-bent tubing and a straight-through muffler to reduce backpressure, trim EGTs, and deliver a deep, controlled tone. Split-side dual exits complete the look without drone.
Fitment
- Vehicle: 2004.5–2007.5 Dodge Ram 2500/3500, 5.9L Cummins (all cab/bed configurations)
- Configuration: Cat-back, single in / dual out, split-side exits
- Tubing Diameter: 4.0" (T409 stainless)
- Includes: Straight-through muffler, clamps/hardware; tips sold separately
- Notes: Calibrated for 5.9L “600/610” (’04.5–’07.5) models. Verify emissions rules in your state.
Cross-Reference / Alternatives (MBRP only)
The following are MBRP alternatives on our site for the same 2004.5–2007 5.9L platform (single-side exit):
- MBRP S6108409 — 4" Cat-Back, T409 Stainless, Single Side Exit
- MBRP S6108AL — 4" Cat-Back, Aluminized, Single Side Exit
- MBRP S61180AL — 5" Cat-Back, Aluminized, Single Side Exit
Specifications
| Brand | Diamond Eye Performance |
|---|---|
| MPN | K4236S |
| Material | T409 Stainless Steel |
| Tubing Size | 4.0" |
| Exit | Dual, split-side |
| Muffler | Included (straight-through) |
| Emissions | Cat-back system for 5.9L Cummins (’04.5–’07.5) |
| UPC | Manufacturer has not published for K4236S (with muffler). |
| GTIN | Not published. |
| Shipping Info | Boxed kit; oversized parcel. Weight and dimensions vary by batch. |
| Prop 65 | WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov |
Yes—K4236S is designed for the 5.9L “600/610” era trucks and fits all cab/bed configurations. Always confirm your model year split (2004.5+) before ordering.
FAQ: Does it include tips?No. Tips are sold separately. The system exits dual split-side; you can add tips to suit your style.
FAQ: What’s the difference vs. K4236S-RP?K4236S-RP deletes the muffler (straight pipe). Our site lists K4236S-RP with UPC 841963104608 as the no-muffler variant.
Authoritative sources used for fitment range and variant details: CPP Diesel product/category pages and Diamond Eye’s part page for K4236S.
