Details

• Brand:

  

• SKU:

  21210AA181

• Positions: Lower
• Other Names:

  Thermostat And Gasket Ay

• Description:

  Forester. Lower. BRZ. No.2 (at water pump). 2.5L without turbo, 2011-13.

  
  

  Engine Coolant Thermostat - Subaru (21210AA181)

  The Engine Coolant Thermostat - Subaru (21210AA181) is a Genuine OEM component designed to regulate engine temperature by controlling the flow of coolant between the engine and radiator. This thermostat opens at the correct operating temperature to maintain optimal thermal balance, ensuring efficient performance and engine protection under all driving conditions.

  Constructed from durable, heat-resistant materials, this thermostat is built to withstand the pressure and temperature fluctuations common in modern engine systems. Its precise, factory-spec design guarantees a secure fit and smooth integration with Subaru cooling systems, making installation straightforward for both professional technicians and experienced DIY mechanics.

  The 21210AA181 is compatible with a wide range of Subaru vehicles equipped with FA and FB series non-turbo engines. It plays a critical role in helping the engine warm up quickly and then maintain a stable temperature, preventing overheating or overcooling, both of which can negatively affect fuel efficiency and engine longevity.

  Replacing a faulty thermostat is essential if your vehicle exhibits fluctuating temperatures, poor heater performance, or signs of overheating. By choosing a Genuine OEM part, you ensure accurate temperature regulation, restore proper coolant circulation, and avoid engine stress caused by thermal imbalance.

  ✔ Genuine OEM part for accurate temperature regulation  

  ✔ Opens at 88°C (190°F) for optimal coolant flow

   ✔ Durable construction resists heat and pressure

   ✔ Direct-fit for Subaru FA/FB non-turbo engines

   ✔ Helps prevent overheating and improves fuel efficiency

  For reliable engine cooling system performance, the Engine Coolant Thermostat - Subaru (21210AA181) offers factory-tested quality and long-term dependability.

  
  

• Condition: New
• Notes: Includes Gasket.
• Applications: 2.4L.
• Replaces:

  21210aa180

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