Product Description
DIAMOND EYE K4209A is a 4.0" aluminized turbo-back, single side-exit exhaust system for first-gen 1989–1993 Dodge/Ram 2500 & 3500 5.9L Cummins 2WD (all cab & bed lengths). Mandrel-bent tubing and a performance muffler reduce backpressure, sharpen turbo response, and deliver a deep, mellow tone on the highway.
FAQ: WILL THIS FIT MY TRUCK?
Yes, if you have a 1989–1993 D250/D350 with the 5.9L 12-valve Cummins and 2WD. For 4WD applications, see the cross-reference alternatives below.
FAQ: DOES IT INCLUDE A MUFFLER?
Yes. This K4209A kit includes a performance muffler. If you prefer a straight-pipe version, consider a no-muffler alternative in the MBRP cross-reference list.
FAQ: DO I NEED TUNING OR WELDING?
No tuning is required. This is a bolt-on turbo-back system that reuses factory-style hangers. Basic hand tools are typically all that’s needed.
Fitment Details
- Platform: 1989–1993 Dodge/Ram 2500 & 3500, 5.9L Cummins, 2WD only
- Configuration: 4.0" turbo-back, single side exit, includes performance muffler
- Bed/Cab: All cab and bed lengths
Cross-Reference / Alternatives (MBRP-only)
- 2WD w/ muffler (closest MBRP alternative): MBRP S6148AL
- 4WD w/ muffler: MBRP S6150AL (see 89–93 category page listing)
- 4WD no-muffler (PLM): MBRP S6150PLM (see 89–93 category page listing)
Specifications
| Brand | Diamond Eye Performance |
|---|---|
| MPN | K4209A |
| Material | Aluminized steel |
| System Layout | 4.0" turbo-back, single side exit |
| Includes Muffler | Yes |
| Vehicle Fitment | 1989–1993 Dodge/Ram 2500/3500, 5.9L Cummins, 2WD (all cab/bed) |
| UPC | 841963103076 |
| GTIN | 0841963103076 (GTIN-13) |
| Typical Ship Method | Ground |
| Typical Ship Weight | ~84 lb |
| Typical Carton Size | ~53" x 22" x 14" |
| Prop 65 | WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov |
