ALUMINUM CHEVY SB BB 45 DEGREE SWIVEL WATER NECK THERMOSTAT HOUSING O-RING - COP

Fits Small Block & Big Block Chevy Engines (SB and BB). Compatible Engines : Small Block Chevy (SB), Big Block Chevy (BB). 45 Degree Swivel Design for flexible positioning and easy installation. Mounting Style : Thermostat housing.