Product Description
DIAMOND EYE 510212 is a direct-fit 4.0" inlet / 4.0" outlet T409 stainless muffler for 2004.5–early 2007 Ram 2500/3500 5.9L Cummins. It restores flow with a straight-through, packed design for lower EGTs and a controlled, deep tone. Built in T409 stainless for long service life in road salt and high-heat cycles.
FAQ: WILL THIS FIT MY TRUCK?
Yes—if you have a 5.9L Cummins 2004.5–early 2007 Ram 2500/3500 with a 4" exhaust path. This kit is the OEM-style muffler replacement for those model years. Always verify your model year split (’04.5+) before ordering.
FAQ: WHAT SIZE ARE THE ENDS?
Both the inlet and outlet are 4.0 inches to match factory-style 4" pipes used on 2004.5–early 2007 trucks.
FAQ: WHAT’S THE MUFFLER MADE OF?
T409 stainless steel shell and internals for durability without the premium price of T304.
Fitment Details
- Engine/Chassis: 2004.5–early 2007 Dodge Ram 2500/3500, 5.9L Cummins
- Exhaust size: 4.0" inlet / 4.0" outlet (center/center configuration)
- Series: Diamond Eye Performance Series (OEM-style muffler replacement)
Cross-Reference / Related Diamond Eye Parts (on CPP Diesel)
- 510217 — 4" x 35" T409 stainless muffler (04.5–early 07)
- 510216 — 4" x 35" aluminized steel muffler (04.5–early 07)
- 261064 — First-section tailpipe, 4" T409 (04.5–early 07)
- 261077 — Second-section tailpipe, 4" T409 (04.5–early 07)
Specifications
| Brand | Diamond Eye Performance |
|---|---|
| Part Number (MPN) | 510212 |
| UPC | 841963117707 |
| GTIN | 0841963117707 (GTIN-12 / UPC-A) |
| Configuration | Center In / Center Out, 4.0" / 4.0" |
| Material | T409 Stainless Steel |
| Vehicle Fitment | 04.5–early 07 Dodge Ram 2500/3500 5.9L Cummins |
| Shipping | Free Shipping (standard ground) |
| Package Dimensions | 46.0" (L) x 14.0" (W) x 14.0" (H) |
| Country of Origin | USA (per manufacturer) |
| Prop 65 | WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov |
