180 Degree Thermostat for 1965-1973 Mustangs with a 6-Cylinder Engine and 1965-1995 Mustangs with an 8-Cylinder Engine.This thermostat features a copper "hat" that seals against a bypass restrictor plate inside the block. This closes the bypass circuit when the thermostat opens, so that all the coolant has to go through the radiator. This keeps the temperature from fluctuating too much, which causes damaging overheating to 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972 and 1973 Mustangs with a 6-cylinder engine and 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994 and 1995 Mustangs with an 8-Cylinder Engine.
Installing this new 180 degree direct replacement thermostat can prevent serious damage to your engine. Keeping your engine operating at peak performance while maintaining ideal engine temperature is very important. A faulty thermostat could cause loss of coolant flow and incorrect temperature readings. Thermostats are normally around 180 degrees when they leave from the factory.
- 170 Cubic Inch 6-Cylinder
- 200 Cubic Inch 6-Cylinder
- 250 Cubic Inch 6-Cylinder
- 1965-1973 Big Block and Small Block V8 Except 351C
- 1974-1995 V8
After years of service, thermostats tend to stick or begin faulty operation. To keep this from happening, replace the thermostat during regular tuneups to keep everything working properly. Adding new coolant with the thermostat will help keep your engine running at it's proper operating temperature.
*Does NOT fit 351C engines.
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By Bill Tumas: We're here with a replacement 180-degree thermostat, fitting most '65 through '98 Mustangs. This thermostat will open at 180 degrees just like most factory thermostats found in '65 through '98 Mustangs. It'll fit your '65 through '73 six-cylinder or V8, except for the 351 Cleveland, and will fit all '74 through '98 V8s. A stuck thermostat not only causes cooling issues, it can actually cause heating issues as well, so make sure when you upgrade your cooling system, you replace your thermostat, as well.