Product Description
DIAMOND EYE K4156A-TD is a 4.0" aluminized-steel, DPF-back exhaust kit with a single turn-down exit engineered for the 6.6L Duramax HD platform. It keeps OEM emissions equipment intact while improving flow, tone, and durability.
FAQ: WILL THIS FIT MY TRUCK?
This listing targets 2011–2012 Silverado/Sierra 2500/3500 6.6L Duramax. Manufacturer literature lists coverage for 2011–2015 2500/3500 (all cabs/bed lengths). Always confirm your model year and configuration before ordering.
FAQ: DOES THIS DELETE THE DPF?
No. This is a DPF-back system. Your factory emissions equipment (DPF, DOC, SCR where equipped) remains installed.
FAQ: WHAT EXIT STYLE IS INCLUDED?
This kit includes a single turn-down style outlet and a stainless tip as noted by the manufacturer.
Fitment Details
- Engine/Chassis: GM 6.6L Duramax HD (2500/3500)
- Years: 2011–2012 (this listing); manufacturer coverage indicates 2011–2015 (verify)
- Cab/Bed: All cab and bed lengths (per mfr.)
- System Type: 4.0" DPF-back, single turn-down, aluminized steel
Cross-Reference / Alternatives (MBRP-Only)
- MBRP S6032AL — 4" Filter-Back, Aluminized, Single Side (2011–2019)
- MBRP S6032304 — 4" Filter-Back, T304 Stainless, Single Side (2011–2019)
- MBRP S60360AL — 5" Filter-Back, Aluminized, Single Side (2011–2019)
- MBRP S6033AL — 4" Filter-Back, Aluminized, Dual Outlet (2011–2015)
Specifications
| Brand | Diamond Eye Performance |
|---|---|
| MPN | K4156A-TD |
| UPC | 841963102819 |
| GTIN | 00841963102819 |
| Construction | Aluminized steel |
| Tubing Size | 4.0" |
| System Type | DPF-back, single turn-down |
| Included Tip | Stainless steel (per mfr.) |
| Country of Origin | USA (per mfr.) |
| Shipping | Free Shipping (from CPP Diesel) |
| Package Dimensions | W 14.00" x H 14.00" x D 46.00" |
| Prop 65 | WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov |
