Product Description
DIAMOND EYE K4156A is a 4.0" aluminized steel DPF-back (filter-back) single-side exhaust built for 2011–2015 GM Silverado/Sierra 2500/3500 6.6L Duramax (LML). It retains emissions equipment while reducing post-DPF restriction and sharpening exterior tone. Kit includes a vented stainless tip and all required clamps/hangers for a straightforward, bolt-on install.
FAQ: WILL THIS FIT MY TRUCK?
Yes—fits 2011–2015 Silverado/Sierra 2500/3500 HD 6.6L Duramax (LML), all cab and bed lengths. On some wheelbases you trim the included intermediate pipe per the instructions for proper length.
FAQ: DOES IT KEEP THE DPF?
Yes. This is a filter-back system. It installs after the DPF and retains factory emissions hardware.
FAQ: WHAT COMES IN THE BOX?
Mandrel-bent 4" tubing sections, band/bare clamps, tip, and OEM-style hangers. Hardware and instructions are included.
Fitment Details
- Vehicle: 2011–2015 Chevrolet Silverado / GMC Sierra 2500HD & 3500HD, 6.6L Duramax (LML)
- Configuration: DPF-back (filter-back), single side exit, 4.0" OD mandrel-bent tubing
- Cab/Bed: All cab & bed lengths (intermediate pipe may be cut to length per instructions)
- Tip: Included vented stainless steel
Cross-Reference / Alternatives (MBRP-only)
- MBRP S6032AL — 4" Filter-Back, Single Side, Aluminized Steel (2011–2019 GM 6.6L)
- MBRP S6032BLK — 4" Filter-Back, Single Side, Black-Coated AL (2011–2019 GM 6.6L)
- MBRP S6032304 — 4" Filter-Back, Single Side, T304 Stainless (2011–2019 GM 6.6L)
Specifications
| Brand | Diamond Eye Performance |
|---|---|
| MPN | K4156A |
| UPC | 841963102796 |
| GTIN | 0841963102796 (UPC-A) |
| Tubing Diameter | 4.0" (101.6 mm) |
| Exit | Single side |
| Material | Aluminized steel (tubing), stainless steel tip |
| Includes | Tip, clamps, hangers, hardware, instructions |
| Shipping Weight | ~60 lb |
| Package Dimensions | ~52" x 21" x 13" |
| Prop 65 | WARNING: Cancer and Reproductive Harm |
