Product Description
Boost airflow, lower EGTs, and add a deeper tone to your LB7/LLY Duramax with the MBRP S6000P 4" Cat-Back. Built from heavy-duty aluminized steel with a bolt-on, single-side exit, this EC/CC system installs cleanly using factory-style hangers and included clamps.
- 4" cat-back, single side exit
- Aluminized steel construction
- Direct bolt-on; uses factory locations
- Includes muffler and installation hardware
Fitment
- Make/Model: Chevrolet Silverado 2500HD/3500HD, GMC Sierra 2500HD/3500HD
- Engine: 6.6L Duramax (LB7 2001–2004, LLY 2004.5–2005)
- Years: 2001–2005
- Cab: Extended Cab & Crew Cab (EC/CC)
- Configuration: Cat-back, single side exit
Recommended MBRP Alternatives & Components (Cross-Reference)
Prefer a different material or full turbo-back? Check these MBRP options:
- MBRP S6000AL – 4" Cat-Back, Armor Lite, EC/CC (01–05): View Product
- MBRP S6005P – 4" Downpipe-Back, Aluminized (01–04): View Product
- MBRP S60210P – 5" Downpipe-Back, Aluminized (01–04): View Product
- MBRP GMAL401 – 4" Front Pipe with Flange, Armor Lite (01–04): View Product
- MBRP GMS9401 – 4" Front Pipe with Flange, Armor Plus (01–04): View Product
Helpful Notes
- Designed to bolt to the factory catalytic converter on applicable vehicles.
- Professional installation recommended if your original hardware is corroded.
FAQ
Will this fit my 2001–2005 Duramax extended or crew cab? Yes. This kit is specifically built for Extended Cab and Crew Cab 2500HD/3500HD models from 2001–2005 with the 6.6L Duramax.Is the S6000P stainless steel? No. S6000P is an aluminized-steel system. If you prefer stainless, consider MBRP Armor Plus/XP series alternatives listed above.
Does it include a muffler and the required clamps/hangers? Yes. The kit includes a muffler along with clamps and hangers for a bolt-on installation.
Will it require tuning or trigger a check-engine light? Being a cat-back system, it installs after the catalytic converter and typically does not require tuning or affect emissions readiness.
