Dorman 918-338 Power Steering Cooler

Power Steering Cooler for GM Hydraulic Steering

Dorman 918-338 is a direct replacement power steering cooler for select General Motors vehicles with hydraulic steering. It addresses the common failure point found on original wire-style coolers by using a more durable stacked-fin aluminum design for improved resistance to corrosion and physical damage.

Key Features

• Aluminum construction with a black finish
• Stacked-fin cooler design for added durability
• Quick-connect inlet and outlet fittings
• Overall width: 4 in
• Inlet and outlet fitting inside diameter: 0.72 in
• Inlet and outlet fitting outside diameter: 0.94 in
• Length and height: 29.2 in
• Thickness: 0.52 in

Detailed Description

This Dorman OE FIX power steering cooler is built to replace the original cooler used on select Cadillac, Buick, and Chevrolet models where the factory wire-style fins can corrode, bend, and break over time. The stacked-fin aluminum construction provides a more robust heat exchanger layout while maintaining the OE-style fit and quick-connect attachment points. Part number 918-338 is a practical replacement for hydraulic steering systems that need reliable fluid cooling in everyday driving conditions.

Fits 2013-2019 Cadillac XTS, hydraulic steering with twin turbos; 2010-2016 Buick LaCrosse, hydraulic steering with twin turbos; 2014-2016 Chevrolet Impala, hydraulic steering; 2016 Chevrolet Malibu Limited, hydraulic steering; 2013-2015 Chevrolet Malibu, hydraulic steering; 2014 Buick Regal, hydraulic steering; and 2010 Buick Allure, hydraulic steering. This part cross-references OE number 13280139 for the same application. Dorman 918-338 is a fit-focused option for owners searching for a power steering cooler for 2013-2019 Cadillac XTS or a replacement power steering cooler for 2014-2016 Chevrolet Impala with hydraulic steering.

What It Helps Address

• Leaking or damaged original power steering cooler
• Corroded fins on the factory cooler
• Bent or broken cooler fins from road exposure
• Reduced steering-fluid cooling performance
• Service replacement needs on hydraulic steering systems

Installation Notes and Tips

Verify hydraulic steering before ordering, since fitment is limited to the listed applications. Confirm the quick-connect fitting size and cooler dimensions against the original unit before installation. Inspect the surrounding lines and mounting points for wear or damage during replacement so the new cooler can be installed on a clean, secure system.

Quality Assurance

Dorman OE FIX components are engineered as upgraded replacements for common OE failure points, using a more durable design than the original wire-style cooler construction. Part number 918-338 is built to match the listed GM applications and restore proper power steering fluid cooling performance.