Dorman 904-389 Turbocharger Coolant Line - Return

Overview of Dorman Turbocharger Coolant Line 904-389

The Dorman 904-389 turbocharger coolant line is engineered to maintain optimal turbocharger performance by efficiently circulating coolant. Designed specifically for select Subaru models, this molded rubber coolant line ensures reliable operation under demanding conditions.

• Constructed from durable rubber elastomer (caucho) for flexibility and heat resistance
• Molded assembly shape for precise fit and leak prevention
• Black color with matching black fittings for OEM appearance
• Female inlet and outlet fittings for secure connections
• Inside diameter of 15.3 mm and outside diameter of 20.5 mm
• Length of 4 inches, suitable for specified Subaru turbocharger systems
• OEM grade quality meeting original equipment standards

Detailed Product Description

The Dorman 904-389 turbocharger coolant line is crafted from high-quality rubber elastomer, also known as caucho, providing excellent resistance to heat and pressure typical in turbocharged engines. Its molded assembly design ensures a precise fit, reducing the risk of leaks and coolant loss. Both ends feature female fittings, facilitating straightforward installation and compatibility with existing turbocharger coolant ports. The black color and matching fittings maintain the original equipment look under the hood.

This coolant line is specifically compatible with Subaru models including the Baja, Forester, Impreza, Legacy, Outback, WRX, and WRX STI. Its 4-inch length and 15.3 mm inside diameter are optimized for these vehicles’ turbocharger cooling systems, ensuring efficient coolant flow and helping to prevent turbo overheating.

Common Applications and Issues Addressed

• Replacement of cracked or leaking turbocharger coolant lines
• Restoring proper coolant circulation to prevent turbocharger overheating
• Addressing coolant leaks that cause engine performance issues
• Maintaining OEM-level durability and fitment in Subaru turbocharged engines
• Preventing coolant contamination and pressure loss in the turbo system

Installation Notes and Tips

Ensure the engine is cool before beginning installation to avoid injury from hot coolant. Inspect the turbocharger coolant ports for debris or damage before attaching the new line. The female fittings on both ends of the Dorman 904-389 line require compatible male fittings on the vehicle; verify fitment prior to installation. Tighten clamps securely but avoid over-tightening to prevent damage to the rubber fittings. After installation, check for leaks by running the engine and monitoring coolant flow.

Quality Assurance and Warranty

Dorman 904-389 turbocharger coolant line is manufactured to meet OEM specifications, ensuring reliable performance and durability. This part is backed by Dorman’s quality standards, providing confidence in fit and function for Subaru turbocharged vehicles. Warranty details are available through Dorman and typically cover defects in material and workmanship under normal use.