FCS Q4027 Air Suspension Spring - Rear

Rear Air Suspension Spring for GM SUV Applications

FCS Q4027 is a rear air suspension spring for select Chevrolet, GMC, Saab, Buick, and Oldsmobile vehicles. It is built for applications that use rear air spring support to maintain ride height and suspension function.

Key Features

• Rear air suspension spring application
• Fits 2002-2009 Chevrolet Trailblazer, rear
• Fits 2002-2009 GMC Envoy, rear
• Fits 2005-2009 Saab 9-7x, rear
• Fits 2004-2007 Buick Rainier, rear
• Fits 2002-2006 Chevrolet Trailblazer EXT, rear
• Fits 2002-2006 GMC Envoy XL, rear
• Fits 2004-2005 GMC Envoy XUV, rear
• Fits 2002-2004 Oldsmobile Bravada, rear
• FCS part number Q4027

Detailed Description

FCS Q4027 is a rear air suspension spring for vehicles equipped with rear air suspension on the GMT360 platform and related applications. It serves as a direct replacement option for the rear suspension on the Chevrolet Trailblazer and GMC Envoy family, including the Trailblazer EXT, Envoy XL, Envoy XUV, Buick Rainier, Saab 9-7x, and Oldsmobile Bravada. This part number, Q4027, is a fitment-specific solution for restoring rear suspension support on these models.

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

What It Is Used For

• Replacing a leaking or failed rear air spring
• Restoring rear ride height on a Chevrolet Trailblazer or GMC Envoy
• Addressing uneven rear stance on a Buick Rainier or Saab 9-7x
• Correcting suspension sag in Trailblazer EXT, Envoy XL, or Envoy XUV applications
• Supporting rear suspension function on Oldsmobile Bravada models

Installation Notes and Tips

Verify rear suspension configuration before ordering and match the vehicle year, make, and model to the fitment list. Inspect related air suspension components, lines, and fittings during replacement so the new spring can be installed into a clean, serviceable system. Confirm the rear position and application-specific fitment for FCS Q4027 before installation.

Quality Assurance

FCS supplies suspension components for vehicle-specific replacement applications. Q4027 is cataloged for direct fitment on the listed rear applications.