Billet LS Straight Thermostat Water Neck -16AN -16 AN FittingProduct images may differ from actual product appearance.
Billet LS Straight Thermostat Water Neck -16AN -16 AN Fitting
This CBM adapter bolts in place of the factory angled unit and accepts a -16AN fitting. It is proudly made here in the USA from a solid block of 6061-T6 aircraft grade aluminum. This water neck is machined to accept a standard GM LS1/LS2 style thermostat.