Dorman 918-300 Power Steering Cooler

Power Steering Cooler for Buick, Chevrolet, GMC, and More

The Dorman 918-300 power steering cooler is designed to maintain optimal fluid temperature in your vehicle's power steering system. Engineered with durable aluminum and precise fittings, this cooler supports reliable steering performance for select Buick, Chevrolet, GMC, Isuzu, Oldsmobile, and Saab models.

• Constructed from corrosion-resistant aluminum for durability
• Overall length of 35.5 inches and width of 7.41 inches for efficient cooling
• Black finish for corrosion protection and aesthetic integration
• Inlet and outlet fitting inside diameters of 0.315 and 0.394 inches respectively
• Compatible with multiple GM and related models including Trailblazer, Envoy, and Ascender

Durable Aluminum Construction and Precise Dimensions

This power steering cooler features a robust aluminum build that resists corrosion and heat damage, ensuring long service life. Measuring 35.5 inches in length and 7.41 inches in width, it provides ample surface area to dissipate heat effectively. The cooler’s inlet and outlet fittings have inside diameters of 0.315 and 0.394 inches, matching OEM specifications for a secure and leak-free connection. Finished in black, the cooler integrates seamlessly into the engine bay while offering additional protection against environmental factors.

Compatible Vehicles and Applications

The Dorman 918-300 power steering cooler is compatible with a range of vehicles, including Buick, Chevrolet, GMC, Isuzu, Oldsmobile, and Saab models. Specifically, it fits models such as the Buick Rainier, Chevrolet Trailblazer and Trailblazer EXT, GMC Envoy, Envoy XL, Envoy XUV, SSR, Isuzu Ascender, Oldsmobile Bravada, and Saab 9-7x. This part is designed to maintain proper power steering fluid temperature, which is critical for consistent steering response and system longevity.

• Helps prevent power steering fluid overheating
• Reduces risk of premature pump wear and failure
• Minimizes steering system leaks caused by heat damage
• Supports smooth and responsive steering performance
• Maintains fluid integrity under heavy load or towing conditions

Installation Notes and Tips

Installation of the Dorman 918-300 power steering cooler requires basic mechanical skills and appropriate tools. Ensure the vehicle is safely lifted and supported before beginning. Drain the power steering fluid to prevent spills, then remove the old cooler and inspect hoses and fittings for wear. Match the inlet and outlet fitting sizes carefully to avoid leaks. After installation, refill the system with the recommended power steering fluid and bleed air from the system to restore proper function.

Quality Assurance and Warranty

Dorman power steering components are manufactured to meet or exceed OEM standards. The 918-300 power steering cooler undergoes rigorous quality control to ensure durability and fitment accuracy. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship. Refer to the product documentation for exact warranty terms.