Mevotech MK8637 Suspension Control Arm Bushing - Rear Upper

Mevotech MK8637 Rear Upper Control Arm Bushing

Mevotech MK8637 is a suspension control arm bushing made from natural rubber for rear upper control arm service. It is built for direct replacement use on select Ford and Mercury rear suspension applications, including Mustang, Thunderbird, Cougar, Capri, Fairmont, and Zephyr models.

Key Features

• Natural rubber construction for OE-style suspension isolation
• Grey finish with an inside diameter of 0.48, outside diameter of 2.13, and length of 2.4
• Wall thickness measures 0.82 for controlled bushing support
• Designed for rear upper control arm locations
• Part number MK8637 for catalog and cross-reference lookup

Detailed Description

Mevotech MK8637 is a suspension control arm bushing engineered for rear upper control arm applications where rubber compliance and dimensional accuracy matter. The natural rubber material helps maintain the suspension’s original bushing characteristics, while the listed dimensions support proper fitment in the control arm assembly. This part is used on 1979-1993 Ford Mustang, 1980-1988 Ford Thunderbird, 1980-1988 Mercury Cougar, 1979-1986 Mercury Capri, 1978-1983 Ford Fairmont, and 1978-1983 Mercury Zephyr rear upper positions. If you are servicing a classic Fox-body Ford or Mercury rear suspension, MK8637 provides a direct replacement option for worn control arm bushings.

This part cross-references MOOG Chassis Products K8637 for the same application.

What It Is Used For

• Rear upper control arm bushing wear that causes looseness in the suspension
• Clunking or squeaking from deteriorated rubber bushings
• Excessive rear suspension movement under load
• Restoring control arm pivot support on Ford Mustang and Mercury Cougar rear upper applications
• Replacing cracked, hardened, or deformed rubber bushings in Fox-platform rear suspension service

Installation Notes and Tips

Verify the rear upper control arm application and compare the listed dimensions before installation. Press-fit bushing service typically requires proper suspension tools and careful alignment of the control arm sleeve and housing. Inspect the control arm and surrounding hardware for wear before reassembly, and confirm the bushing seats fully in the arm.

Quality Assurance

Mevotech supplies suspension components for replacement service, and MK8637 is specified with exact material and dimensional data to support accurate fitment selection. Confirm vehicle year, make, model, and rear upper position before ordering.