Product Description
DIAMOND EYE K4129S is a 4.0" 409 stainless DPF-back, single side-exit system for 2007.5–2010 Silverado/Sierra 2500/3500 HD (LMM). It replaces restrictive factory tubing for lower backpressure and a cleaner exhaust note. This kit includes the Turbo Direct Pipe #321056 and a vented stainless tip for improved flow and finish.
FAQ: WILL THIS FIT MY TRUCK?
Yes—if you have a 2007.5, 2008, 2009, or 2010 GM 2500/3500 HD with the 6.6L Duramax LMM and factory DPF, this DPF-back system is designed to fit all cabs and bed lengths.
FAQ: DOES IT INCLUDE A TURBO DIRECT PIPE AND TIP?
Yes. The kit ships with Turbo Direct Pipe #321056 and a vented stainless exhaust tip.
FAQ: IS TUNING REQUIRED?
No. Being DPF-back, it installs behind emissions hardware and does not require tuning.
Fitment Details
- Platform: 2007.5–2010 Chevrolet Silverado / GMC Sierra 2500HD & 3500HD
- Engine: 6.6L Duramax LMM
- Configuration: DPF-back, single side exit, 4.0" 409 stainless, no muffler
- Includes: Turbo Direct Pipe #321056 and vented stainless tip
Cross-Reference / Alternatives (MBRP-Only)
- MBRP S6026AL – 4" aluminized steel DPF-back
- MBRP S6026P – 4" aluminized, single side exit
- MBRP S6026SLM – 4" T409 stainless, no muffler
- MBRP S6026BLK – 4" black-coated series
Specifications
| Brand | Diamond Eye Performance |
|---|---|
| MPN | K4129S |
| UPC | 841963121636 |
| GTIN | 0841963121636 (UPC-A) |
| Material | 409 Stainless Steel |
| System Type | 4.0" DPF-Back, Single Side Exit, No Muffler |
| Included Components | Turbo Direct Pipe #321056; Vented Stainless Tip |
| Vehicle Fit | 2007.5–2010 Silverado/Sierra 2500/3500 HD (6.6L LMM, all cabs/beds) |
| Shipping Weight | ~38 lb |
| Package Dimensions | ~55" x 13" x 9" |
| Prop 65 | WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov |
