321055 - FOR 2001, 2002, 2003 & 2004 - CHEVY/GMC 6.6L LB7 DURAMAX DIESEL 2500/3500 - 3" ALUMINIZED - PERFORMANCE DIESEL EXHAUST  - TURBO DIRECT PIPE - CNC MACHINED PROFILE AND POCKETED FLANGE - WRAPPED WITH THERMAL HEADER TAPE TO HELP REDUCE EGT'S

C.A.R.B. EO# D-778

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