Dorman 918-618 Power Steering Cooler

Power Steering Cooler for GM HD Trucks

Dorman 918-618 is a direct replacement power steering cooler for select Chevrolet Silverado 2500 HD, Silverado 3500 HD, GMC Sierra 2500 HD, and Sierra 3500 HD models from 2017-2019. It addresses the common failure mode of the original cooler by using a stacked-fin construction for added durability and longer service life.

Key Features

• OE FIX design replaces the original wire-style fin cooler with a more robust stacked-fin layout
• Built from aluminum for efficient heat transfer and corrosion resistance
• Black finish for a clean underhood appearance
• Push-in inlet and outlet fittings for factory-style connection points
• Overall width: 26.2 in.; length: 39.6 in.; height: 10.3 in.; thickness: 4 in.
• Fits 2017-2019 Chevrolet Silverado 2500 HD and Silverado 3500 HD, N/A
• Fits 2017-2019 GMC Sierra 2500 HD and Sierra 3500 HD, N/A

Detailed Description

This Dorman power steering cooler, part number 918-618, is engineered for GM heavy-duty trucks that use the original cooler prone to corrosion, bending, and fin damage. The aluminum stacked-fin design helps improve durability while maintaining the cooling function needed to manage power steering fluid temperature in demanding towing and hauling conditions. This part cross-references GM 84024888 for the same application.

What It Helps Solve

• Damaged or corroded power steering cooler fins
• Reduced cooling performance from bent or broken wire-style fins
• Power steering fluid temperature buildup during heavy-duty use
• Leak-prone or deteriorated original cooler assemblies
• Fitment issues when replacing the factory cooler on GM HD trucks

Installation Notes and Tips

Verify the vehicle application before installation. This cooler uses push-in fittings with 0.2 in. inside diameter and 0.25 in. outside diameter connection points, so matching the factory hose and line configuration is important. Confirm overall dimensions and mounting location on the vehicle before final assembly.

Quality Assurance

Dorman OE FIX components are built to address known failure points in original equipment designs. Part number 918-618 uses a stacked-fin construction to improve durability over the factory wire-style cooler used on select GM trucks.