DIAMOND EYE K4236A-RP CAT BACK EXHAUST SYSTEM FOR 04.5–07.5 DODGE RAM 2500/3500 CUMMINS 4 INCH SPLIT SIDE NO MUFFLER ALUMINIZED

DIAMOND EYE K4236A-RP is a 4.0" aluminized-steel CAT-back, single-in / dual-out (split-side) system for 2004.5–2007.5 Dodge Ram 2500/3500 5.9L Cummins. It replaces the muffler with a straight replacement pipe for maximum flow and an aggressive tone, and uses mandrel bends, bolt-on hangers, and OEM-style clamps for a clean install.

FAQ: WILL THIS FIT MY TRUCK?

Yes—fits 2004.5–2007.5 Ram 2500/3500, 5.9L Cummins, all cab & bed lengths. This is a CAT-back dual-exit kit (no muffler). Not for 2003–early 2004 models. Always verify year (’04.5+) before ordering.

FAQ: DOES IT INCLUDE A MUFFLER?

No. This is the replacement-pipe version (no muffler) for the loudest, free-flow setup. If you want a quieter dual-exit Diamond Eye system, choose the K4236A (with muffler).

FAQ: WHAT SOUND AND PERFORMANCE GAINS CAN I EXPECT?

Expect a deeper, more pronounced exhaust note and reduced backpressure. Typical bolt-on gains include lower EGTs and improved throttle response, especially when paired with a high-flow downpipe and intake.

Fitment Details

• Platform: 2004.5–2007.5 Dodge Ram 2500/3500, 5.9L Cummins (Common Rail)
• Configuration: Cat-back, single-in / dual-out split-side exit
• Tubing Diameter: 4.0" (mandrel bent)
• Material: Aluminized steel
• Muffler: None (replacement pipe)

Cross-Reference / Alternatives (MBRP-only)

• MBRP S6108AL — 4" Cat-Back, Single Side Exit, Aluminized (’04.5–’07 5.9L) — View on CPP Diesel
• MBRP S6108409 — 4" Cat-Back, Single Side Exit, T409 Stainless (’04.5–’07 5.9L) — View on CPP Diesel
• MBRP S61180PLM — 5" Cat-Back, Single Side Exit, No Muffler (’04.5–’07 5.9L) — Armor Lite/series options on CPP Diesel

Specifications