Unity 12-541000 Shock Absorber - Rear

Rear Gas Charged Shock Absorber

Unity 12-541000 is a rear gas charged shock absorber built for direct replacement on select Ford, Lincoln, and Mercury applications. It uses nitrogen gas charging for quicker response and steadier damping control, helping restore predictable suspension performance on higher-mileage vehicles.

Compatible with 2003-2011 Ford Crown Victoria, 2003-2011 Lincoln Town Car, 2003-2011 Mercury Grand Marquis, and 2003-2004 Mercury Marauder rear suspension applications, this shock absorber is a practical OE-style service part for common full-size rear-wheel-drive platforms.

Key Features

• Brand: Unity Gas Charged Shock Absorber
• Part number: 12-541000
• Rear position application
• Nitrogen gas charged for consistent control and faster response
• Compressed length: 12.5 in.
• Travel length: 8.75 in.
• Extended length: 21.25 in.
• Economy-grade replacement for routine suspension service
• OE-style collapsed length, extended length, and shock stroke references

Product Details

Unity Automotive has more than 40 years of aftermarket suspension manufacturing experience and offers broad coverage across suspension replacement parts. The 12-541000 shock absorber is part of the Unity Gas Charged Shock Absorber line, which focuses on nitrogen-charged damping for stable ride control and responsive suspension action. This part cross-references Monroe Shocks & Struts 5993 for the same application.

Use this rear shock absorber when servicing a Ford Crown Victoria, Lincoln Town Car, Mercury Grand Marquis, or Mercury Marauder with the listed rear fitment. The 12-541000 is a direct-fit suspension shock absorber for vehicles covered from 2003 through 2011, with fitment concentrated on the rear suspension.

Common Repair Uses

• Rear-end bounce or excessive oscillation after bumps
• Reduced damping control from worn original shocks
• Uneven ride quality over rough pavement
• Suspension noise related to worn shock absorber performance
• Loss of stability during braking or lane changes

Installation Notes

Verify rear suspension fitment by year, make, and model before installation. Compare the compressed length, extended length, and travel length to the removed part to confirm proper replacement. Inspect related suspension components, including mounts and bushings, during service so the new shock absorber can operate correctly.

Quality Assurance

Unity Automotive positions this shock absorber within its long-running suspension product line, backed by decades of aftermarket manufacturing experience and broad application coverage. The brand’s focus on suspension innovation and OE-style replacement dimensions supports consistent service on the listed rear applications.