Details

• Brand:

  

• SKU:

  21204AB420

• Positions: Rear
• Other Names:

  Heater Hose, By-Pass Hose, Hose Ay Pre Heater

• Description:

  Rear, rear, #2. Throttle Body Cooling. Flow Not Specifed. All Required. Outlet.

  Engine Coolant Hose - Subaru (21204AB420)

  The Engine Coolant Hose - Subaru (21204AB420) is a Genuine OEM part designed to deliver reliable coolant circulation within your Subaru’s cooling system. Its function is to transport coolant between the radiator and engine, regulating operating temperature to prevent overheating and safeguard critical engine components. Engineered by Subaru to meet factory specifications, this hose ensures precise compatibility, long-term durability, and seamless installation.

  Crafted from reinforced, high-quality rubber, the Engine Coolant Hose - Subaru (21204AB420) is built to withstand high heat, coolant pressure, and exposure to chemicals. Its molded construction guarantees proper routing and leak-free performance, reducing risks of premature failure common in lower-quality aftermarket hoses. By maintaining a consistent coolant flow, this OEM hose supports fuel efficiency, engine longevity, and dependable performance.

  For professional mechanics, this part offers a trusted factory solution that restores the cooling system to original standards. For DIY owners, the direct-fit design provides ease of installation without the need for modifications. Subaru’s OEM quality means dependable protection and long service life under demanding conditions.

  A deteriorated or leaking coolant hose can quickly escalate into major engine damage. Replacing it with the 21204AB420 restores cooling system integrity and helps avoid overheating, poor efficiency, and costly repairs.

  • Genuine Subaru OEM coolant hose for exact fitment

  • Reinforced rubber construction resists heat, pressure, and wear

  • Molded design ensures correct routing and leak-free sealing

  • Maintains reliable coolant flow for optimal engine performance

  • Direct-fit replacement simplifies installation

  • Protects engine from overheating and long-term damage

  By choosing the Engine Coolant Hose - Subaru (21204AB420), you are investing in Subaru’s factory-grade reliability. This Genuine OEM component ensures your cooling system operates efficiently, keeping your engine safe, stable, and performing at its best.

  
  

• Condition: New

WARNING: California Proposition 65

×

California Proposition 65

WARNING: Cancer and reproductive harm - www.P65Warnings.ca.gov