432107-SS801 Mel's Manufacturing 4" Down Pipe Back Exhaust - Stainless GMC/Chevy 6.6L Duramax 2001-2007

Increase your turbo boost pressure to approximately 28-30psi with a quick 5 minute installation of PPE's boost increase valve for your 2001 - 2004 GMC Duramax LB7 truck.

This MBRP exhaust tip fits 4" exhaust systems - it has a 4" inlet, 5" outlet, and is 12" long with an angled rolled end and a polished stainless finish. No welding required.

The S&B Turbo Inlet Manifold improves airflow to the engine in your 2004.5-2005 GMC Chevy Duramax LLY by 78.6%, improves turbo spool, and lowers EGT's. Breathe Easy.

Warm up the engine in your 2001-2004 GMC/Chevy Duramax 6.6L LB7 diesel faster on cold mornings with BD Diesel's High Idle Kit. Easy to install! Selectable ranges - 800-1800 RPM.

Mel's Manufacturing 3" T-409 Stainless Steel replacement turbo direct pipe for 2004.5-2010 GMC/Chevy Duramax 6.6L LLY, LBZ, and LMM engines.

Fits 4" Exhaust Systems