Westar AS-7039 Air Suspension Spring - Rear

Westar AS-7039 Rear Air Suspension Spring

Westar AS-7039 is a rear air suspension spring built for drivers who need a direct replacement for factory air ride components. It is designed for 2007-2014 Ford Expedition and 2007-2014 Lincoln Navigator rear applications, with OE-style fit, function, and ride control.

Key Features

• Designed to meet or exceed OEM specifications for quality, fit, and function
• New air suspension spring construction; Westar does not sell remanufactured units
• Built to deliver OEM-level performance for long service life and consistent ride control
• Manufactured using quality components and strict industry standards
• Compatible with rear air suspension setups on Ford Expedition and Lincoln Navigator

Detailed Description

Westar AS-7039 is an air suspension spring for rear suspension service on the Ford Expedition and Lincoln Navigator. It is intended for owners replacing a worn or leaking rear air spring and for technicians restoring factory ride height and load support. This part cross-references Dorman 949-256 for the same application. The AS-7039 part number is also useful when searching for a rear air suspension spring for 2007-2014 Ford Expedition or 2007-2014 Lincoln Navigator models.

What It Helps Fix

• Rear end sagging or uneven ride height
• Air leaks from a failing rear spring assembly
• Harsh ride caused by loss of air suspension support
• Suspension warning lights related to rear air spring failure
• Poor load leveling performance on air ride-equipped vehicles

Installation Notes and Tips

Verify the vehicle’s rear suspension configuration before ordering and compare the original part to Westar AS-7039 for connector, mounting, and shape match. After installation, inspect the air lines, fittings, compressor operation, and related suspension components to confirm the system holds pressure and returns to proper ride height. For best results, replace worn companion parts as needed and follow the vehicle service procedure for air suspension calibration or relearn steps if required.

Quality Assurance

Westar manufactures air suspension components to strict ISO, QS, and TS standards using quality materials and new parts only. AS-7039 is engineered to meet or exceed OEM expectations for fit, function, and ride control on rear air suspension applications.