CBM MOTORSPORTS™ LS1/LS2/LS6/LS7 STRAIGHT BILLET WATER NECK FITTING W/180 THERMOSAT & SEAL Product Description:
Custom water neck fitting for LS1, LS2, LS6, and LS7 style engines. This water neck is machined from a solid piece of 6061-T6 aircraft grade billet aluminum right here in the USA. This new version is 3D profiled and flows 20% better then our old unit. It bolts in place of the factory angled unit and accepts factory size hose (1.5"). Comes with a genuine ACDelco 86C thermostat(roughly 180F) and ACDelco seal. This is helpful when replacing early LS1's with a 1 piece thermostat. This neck will not fit 2008+ LS3, LS7, LS9, LSA, L76, or L92 water pumps.