Monroe 58617 Shock Absorber and Coil Spring Assembly - Rear

Load Adjusting Control for Rear Suspension

Monroe 58617 is a load adjusting shock absorber for rear suspension applications on select Ford, Mercury, and Mazda vehicles. It uses a heavy-gauge calibrated spring to add control as cargo weight or towing demand increases, helping the rear suspension stay more composed under changing road and load conditions.

For Ford Explorer, Explorer Sport Trac, Explorer Sport, Mercury Mountaineer, and Mazda Navajo rear applications, Monroe 58617 provides a direct-fit suspension shock absorber and coil spring assembly built around load-sensitive damping support.

Key Features

• Load adjusting shock absorber with a calibrated heavy-gauge spring
• Rear suspension application for towing and hauling use
• Metal dust shield included for added protection
• Extended bumper stop included
• Lower mount: loop bushing and sleeve mount, 12 mm sleeve ID
• Upper mount: cross pin mount with closed-ended 5/16 in. hole ID
• Compressed length: 15.5 in.; extended length: 25.125 in.; travel length: 9.625 in.

Product Details

Monroe Load Adjusting Shock Absorber 58617 is built for rear suspension service where vehicle load changes from day to day. The spring-assisted design adds support as the rear of the vehicle is asked to carry more weight, which is especially relevant for Ford Explorer and Explorer Sport Trac owners who tow or haul, as well as Mercury Mountaineer and Mazda Navajo drivers using their vehicles for utility work. The metal dust shield helps protect the shock body, while the included extended bumper stop supports suspension control at full extension. This part cross-references Monroe Shocks & Struts 43171 for the same application.

Common Problems This Part Helps Address

• Rear-end sag when carrying cargo or towing
• Reduced control over bumps with changing load conditions
• Excessive rear suspension movement under heavier use
• Need for a rear shock absorber on towing and hauling applications
• Wear-related loss of damping performance in the rear suspension

Installation Notes and Tips

Fits 2001-2005 Ford Explorer Sport Trac, rear. Fits 2001-2003 Ford Explorer Sport, rear. Fits 1995-2001 Ford Explorer, rear. Fits 1997-2000 Mercury Mountaineer, rear. Fits 1991-1994 Ford Explorer, rear. Fits 1991-1994 Mazda Navajo, rear. Verify upper and lower mounting styles before installation: upper cross pin mount and lower loop bushing with sleeve mount. Confirm vehicle configuration, including the 1995-2001 Ford Explorer without Automatic Ride Control application noted in the fitment data.

Quality Assurance

Monroe designs the Load Adjusting Shock Absorber line for vehicles that see variable rear loads, combining spring-assisted support with shock absorber control for demanding use. Part number 58617 is built to match the listed mounting and dimensional specifications for the confirmed applications.