Dorman 949-300 Air Suspension Compressor

Dorman 949-300 Air Suspension Compressor

This Dorman air suspension compressor is built for Jeep Grand Cherokee and Grand Cherokee WK applications that use an electrical air spring system. It addresses common compressor failure points tied to moisture intrusion and piston wear with an aluminum piston, improved sealing, and an upgraded thermal classification.

Key Features

• OE FIX replacement for nitrogen-filled suspension systems
• Aluminum piston helps replace plastic piston wear points
• Improved seals help reduce moisture-related failure concerns
• Upgraded thermal classification for demanding compressor operation
• 12V electrical system with 15 amp rating
• Maximum pressure: 288
• Airflow rate: 30
• Black finish
• Package contents: 1 compressor assembly

Detailed Description

Dorman 949-300 is an air suspension compressor for select Jeep Grand Cherokee and Jeep Grand Cherokee WK models. It is engineered as an OE-style replacement for vehicles using an electrical air spring system, with design updates focused on the compressor’s common wear and failure areas. The aluminum piston and improved seals are intended to address the moisture intrusion and piston wear issues that can affect original compressors, while the upgraded thermal classification supports consistent operation under load. This part cross-references Chrysler/Mopar 68041137AD for the same application.

What It Helps Fix

• Air suspension compressor failure from moisture intrusion
• Compressor wear caused by a plastic piston
• Slow or weak suspension height correction
• Loss of air pressure in the suspension system
• Electrical compressor operation issues in nitrogen-filled suspension setups

Installation Notes and Tips

Compatible With 2011-2021 Jeep Grand Cherokee and 2022 Jeep Grand Cherokee WK, N/A. Verify the vehicle’s suspension system type and electrical connector configuration before installation. Inspect related air lines, fittings, and suspension components for leaks or damage so the replacement compressor is not overworked after service. Confirm the mounting location and bracket requirements on the vehicle, as mounting hardware and mounting bracket are not included.

Quality Assurance

Dorman positions this OE FIX compressor as an upgraded replacement for the original design, using an aluminum piston, improved seals, and enhanced thermal classification to address known failure points in the factory unit.