Details

• Brand:

  

  

• SKU:

  YU3Z-8575-BA

• Other Names:

  Thermostat, Thermostat Assembly, rt1161

• Description:

  This is the genuine Ford engine coolant thermostat that regulates coolant flow between the engine and radiator, staying closed during warm-up so the engine reaches operating temperature quickly, then opening to admit radiator coolant and hold a stable running temperature. It fits the 4.0L OHV Cologne V6 used across a wide range of Ford light trucks and sport utilities, including Ranger, Explorer, Aerostar, Explorer Sport Trac, and Mercury Mountaineer, spanning roughly the 1990 through 2003 production years within a broad catalog supersession window. A failing thermostat is a common cause of an engine that runs too cold and never reaches full heat, a heater that blows only lukewarm air, poor fuel economy, or conversely overheating when the valve sticks shut. Replacing it restores correct warm-up behavior and consistent temperature control. Install with a fresh housing gasket and refill with the specified coolant, then bleed trapped air from the cooling system afterward. This service thermostat supersedes earlier base 8575 parts for these applications.

• Applications: 2.9L, 3.0L, 4.0L.
• Replaces:

  f2tz8575a

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