Product Description
DIAMOND EYE K4259A is a 4" aluminized steel DPF-back single-side exhaust engineered for the 2014 Ram 2500 6.7L Cummins (Crew Cab, Short Box). It bolts on after the DPF to improve flow, help lower EGTs, and add a deeper tone—without tuning or emissions deletes.
Fitment Details
- Vehicle: 2014 Ram 2500, 6.7L Cummins, 4-Door Crew Cab, Short Box
- System Type: DPF-Back, Single Side Exit
- Tubing Diameter: 4", Aluminized Steel
- Year coverage note: Diamond Eye lists coverage around 2013–2015 Crew Cab Short Box; many retailers list 2014–2018. Verify cab/bed and rear suspension before purchase.
Cross-Reference / Alternatives (MBRP on CPP Diesel)
- MBRP 5" Filter-Back Single Aluminized (CC/SB) — S61650AL
- MBRP 5" Filter-Back Single T409 Stainless (CC/SB) — S61650409
- MBRP 5" Filter-Back Single Aluminized (Other cabs/beds) — S61640AL
FAQ: IS THIS KIT EMISSIONS-COMPLIANT?
Yes. It installs after the DPF (filter-back/DPF-back) and retains emissions equipment.
FAQ: DO I NEED TUNING?
No tuning is required for a DPF-back exhaust.
FAQ: WILL IT FIT MEGA CAB OR LONG BOX?
No—this specific part number is for Crew Cab, Short Box. Verify your cab/bed before ordering.
Specifications
| Brand | Diamond Eye Performance |
|---|---|
| MPN | K4259A |
| UPC | 841963105476 |
| GTIN | 0841963105476 (UPC-A) |
| System Type | DPF-Back, Single Side Exit |
| Main Tubing Diameter | 4" |
| Material | Aluminized Steel |
| Shipping Weight | ~24 lb |
| Package Dimensions | 13" W x 21" H x 52" L |
| Country of Origin | USA (per distributor data) |
| Prop 65 | WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov |
