Spacer solves the issue of trying to use a thermostat on a Brodix HV Series Intake Manufactured from billet aluminum with a machined O-ring groove on the intake side and thermostat register on top 1 " thick spacer has two 3/8" NPT female ports to plumb water to cylinder heads for cooling
Thermostat Spacer; SBC, BBC And BBC Brodix HV Series Intakes; Billet Aluminum