2004-2006 CHEVY/GMC 6.6L LLY DURAMAX DIESEL 2500/3500
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K4120A - FOR '04-'05 CHEVY 4" ALUMINIZED - CAT BACK SINGLE W/TDP
K4120A – FOR 2004 & 2006 – CHEVY/GMC 6.6L LLY DURAMAX DIESEL 2500/3500 (ALL CAB AND BED LENGTHS) – 4″ ALUMINIZED – PERFORMANCE DIESEL EXHAUST KIT – CATALYTIC CONVERTER BACK SINGLE WITH TURBO DIRECT PIPE #321056 INCLUDED IN KIT