FCS 342518 Shock Absorber - Rear

Rear Shock Absorber for Colorado and Canyon

FCS 342518 is a rear suspension shock absorber for select Chevrolet Colorado and GMC Canyon applications, with coverage for 2004-2012 models without off-road suspension. It is also listed for the 2006 Isuzu i-280 and 2007-2008 Isuzu i-290 rear positions. With a compressed length of 12.83 inches, extended length of 20.79 inches, and 7.96 inches of stroke, this shock is built around the travel range needed for rear suspension control.

Key Features

• Rear suspension shock absorber for select light truck and SUV applications
• Compressed length: 12.83 in.
• Extended length: 20.79 in.
• Stroke length: 7.96 in.
• Fits 2004-2012 Chevrolet Colorado, rear, w/o Off Road Suspension
• Fits 2004-2012 GMC Canyon, rear, w/o Off Road Suspension
• Fits 2006 Isuzu i-280, rear
• Fits 2007-2008 Isuzu i-290, rear

Product Details

FCS 342518 is a direct-fit rear shock absorber for vehicles that need controlled suspension movement and stable rear-end damping. The listed dimensions help confirm proper travel and mounting range for the application, which is important when replacing a worn shock on a Chevrolet Colorado, GMC Canyon, or the applicable Isuzu models. The FCS brand line covers suspension replacement parts for common repair applications, and this part number is cataloged for rear use only.

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

Common Problems This Part Can Address

• Excessive rear bounce after bumps or dips
• Reduced rear suspension control on rough roads
• Uneven ride behavior from a worn shock absorber
• Rear-end instability during braking or load changes
• Noisy or loose-feeling rear suspension response

Installation Notes and Tips

Verify rear fitment by matching the vehicle year, make, model, and the note excluding off-road suspension on Colorado and Canyon applications. Confirm compressed length, extended length, and stroke length against the original shock before installation. Inspect surrounding suspension components, including bushings and mounting points, so the replacement shock can operate within the correct travel range.

Quality Assurance

FCS suspension components are cataloged for application-specific replacement use, with fitment defined by vehicle platform and rear position. Confirm the part number 342518 against the vehicle listing before installation to ensure the correct rear shock absorber is selected.