Unity 251600 Shock Absorber - Rear

Rear Shock Absorber for Buick Rendezvous and Pontiac Aztek

Unity 251600 is a gas charged rear suspension shock absorber built for specific Buick Rendezvous and Pontiac Aztek applications. It uses nitrogen gas charging for quicker response and steadier damping control, with OEM collapsed length, extended length, and stroke dimensions for a direct-fit replacement.

Key Features

• Gas charged shock absorber for rear suspension service
• Nitrogen gas charged for superior response and consistent control
• OEM collapsed length, extended length, and shock stroke specifications
• Compressed length: 11.02 in; extended length: 15.55 in; travel length: 4.53 in
• Economy-grade replacement from Unity Automotive
• Part number 251600

Product Details

Unity Automotive has more than 40 years of aftermarket suspension manufacturing experience and offers broad suspension coverage across thousands of applications. The Unity 251600 rear shock absorber is part of the Gas Charged Shock Absorber line, which focuses on nitrogen-charged damping response for stable ride control. This part cross-references KYB 344438 and Four Seasons 39052 for the same application. It is a direct replacement for rear suspension service on 2002-2007 Buick Rendezvous and 2001-2005 Pontiac Aztek models, including vehicles without rear air leveling systems or electronic suspension.

What It Helps Address

• Excessive rear bounce after bumps
• Rear-end instability over uneven pavement
• Reduced damping control from a worn shock absorber
• Noise or harshness caused by suspension wear
• Uneven ride quality at the rear of the vehicle

Installation Notes

• Fits 2002-2007 Buick Rendezvous, rear; excludes rear air leveling system and electronic suspension
• Fits 2001-2005 Pontiac Aztek, rear; excludes rear air leveling system and electronic suspension
• Verify OEM length and stroke measurements before installation
• Confirm the vehicle does not use rear air leveling or electronic suspension before ordering
• Use the listed fitment and notes to match the correct rear shock application

Quality Assurance

Unity Automotive backs this shock absorber with its long-standing suspension manufacturing experience and broad aftermarket coverage. The 251600 is engineered to match the listed OEM dimensions and application requirements for the specified Buick Rendezvous and Pontiac Aztek rear suspension setups.