Thermostat Kit 140 Deg. for MerCruiser 2.5-3.0L 4-cyl, 120-140 Hp | 4.3-4.5L V6 185-200 Hp GM & MIE engines.

OEM: Mercury Replaces: Mercury 59078T3

For 1975-78/1982-97 2.5-3.0L 4-cyl, 120-140 Hp | 4.3-4.5L V6 185-200 Hp GM & MIE engines.

also crosses with: Sierra: 18-3650 GLM: 13370 Mallory: 9-43153