MerCruiser 76325A2 GM 4cyl 2.5L 120hp 3.0L 140hp Exhaust Elbow Riser Alpha One Trim Tab Parts Thermostat Housing Base 63588A1 (S/N

Thermostat Housing Base 63588A1 (S/N 03465228 & UP)

Likely GLM 22010 or Sierra 18-2177

7L) (170hp 185hp 200hp 230hp 260hp 305 350 454)

19T & 21T Teeth / 19:21 Ratio

1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971

MerCruiser 76325A2 GM 4cyl 2.5L 120hp 3.0L 140hp Exhaust Elbow Riser Alpha One Trim Tab Parts Thermostat Housing Base 63588A1 (S/NItem Details Part Number 76325A2 Found on the early style GM 4cyl 120hp 2. 5L & 140hp 3. 0L engines where this was usually paired with a 45 degree adapter. (Before they switched to the solid tubular one) Even though this was found on some "470" models, those ones had a another water fitting and I wouldn't recommend trying to install one of those on something used like this. It's probably just easier to start with a fresh one. Overall good condition