Thermostat housing base. New production in aluminum, includes mounting bolts and #6014 mount gasket. Best when installed with our #11038 water neck. This is a special version that was designed for additional clearance when used with our short side draft manifolds. It fits perfectly with standard intake manifolds. Fits all 1.5L 1.9L and 2.0L CIH cylinder heads. Not for EFI systems that require a EFI temperature sensor.