2006-2007 CHEVY/GMC 6.6L DURAMAX DIESEL 2500/3500
K4122A - FOR '06-'07 CHEVY 4" ALUMINIZED - CAT BACK SINGLE
K4122A – FOR 2006 & EARLY 2007 – CHEVY/GMC 6.6L DURAMAX DIESEL 2500/3500 (ALL CAB AND BED LENGTHS) 4″ ALUMINIZED – PERFORMANCE DIESEL EXHAUST KIT – CATALYTIC CONVERTER BACK SINGLE