Cardone 4J-1012A Air Suspension Spring - Rear Left or Rear Right

Cardone Air Suspension Spring for Expedition and Navigator

Restore rear ride support with the Cardone 4J-1012A air suspension spring. This new air suspension spring is built for direct replacement use on select Ford Expedition and Lincoln Navigator applications, with OE-style fit and function for the rear left or rear right position.

Key Features

• Direct replacement air suspension spring for rear suspension service
• Standard replacement design with a black rubber bellows
• Individually developed to match application-specific specifications
• Supplied with a new bladder and new mounts where required
• 100% tested for long-lasting reliable performance
• Extensive rubber and performance testing for harsh temperatures and road conditions
• Package contents: air spring, retaining clip, and O-rings
• Part number: 4J-1012A

Detailed Description

Cardone Air Suspension Spring 4J-1012A is engineered as a new replacement for rear air suspension service on 2003-2006 Ford Expedition and 2003-2005 Lincoln Navigator models. It uses a rubber bellows construction with a base cup upper mount and bottom piston lower mount, and it is designed to deliver OE performance without requiring modifications. The Cardone air suspension spring line focuses on application-specific design, tested sealing, and durability under demanding driving conditions. If you are replacing a worn rear air spring on a Ford Expedition or Lincoln Navigator, this part number provides a direct-fit solution for the original suspension layout.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Problems This Part Can Help Address

• Rear end sag from a leaking or collapsed air spring
• Uneven ride height at the rear left or rear right corner
• Air loss caused by cracked rubber bellows or worn seals
• Harsh ride quality from a failed suspension spring assembly
• Warning lights or suspension performance issues tied to rear air spring failure

Installation Notes and Tips

Verify the vehicle position before ordering, since this application covers rear left and rear right service on select Expedition and Navigator models. Inspect the surrounding air suspension components, mounting points, and air lines before installation. Confirm that the upper and lower mounts match the original configuration, and replace any damaged seals or O-rings during service. This Cardone 4J-1012A spring is intended as a direct replacement, so no modification should be needed when installed on the correct application.

Quality Assurance

Cardone states that these new air suspension springs are individually designed for each application and tested to meet OE performance expectations. Extensive rubber and performance testing is used to confirm durability in harsh temperatures and road conditions. The 4J-1012A is a new product and is built for reliable fit and function on the listed Ford Expedition and Lincoln Navigator rear suspension applications.