New water neck of thermostat housing for EARLY 1967 Mercury Cougar or most other Fords with 390 engines. Cast aluminum without casting marks, sand cast finish.
Includes gasket, for use with common 2-1/2 inch thermostats.
*Note - mid to late 1967 cars used the smaller 2-1/8 inch thermostats. Cutoff was around November 1966.