SCS 4" Downpipe Back Exhaust System
For 2001, 2002, 2003, 2004, 2005, 2006, 2004, 2005, 2006, 2007, GM 6.6L Duramax LB7 LLY LBZ 2500/3500
Constructed out of 16 gauge aluminized steel or T409 Stainless, this exhaust system is designed to simplify installation with included clamps, preweld contour bends and improved flanges. Enjoy a noticeable boost in performance, lowered EGTs, and amplified air flow