PROTHANE 6-309-BL Rear Trailing Arm Bushing Kit for 1979-2003 Ford Mustang

Restore the rear suspension performance of your 1979-2003 Ford Mustang with the PROTHANE 6-309-BL trailing arm bushing kit. Designed for the axle housing, this replacement bushing helps control unwanted suspension movement while supporting more precise handling and improved drivetrain response. It is a practical upgrade for street-driven Mustangs, performance builds, and vehicles needing renewed rear suspension components.
Manufactured with durable polyurethane and steel components, the PROTHANE 6-309-BL bushing kit is engineered to withstand the demanding conditions found in the rear suspension. The black polyurethane construction resists deterioration associated with common rubber bushings, while the zinc oxide finish on the steel components provides added protection against corrosion. This combination delivers dependable service and consistent performance under repeated suspension loads.
The hard black bushing design helps maintain axle housing alignment during acceleration, braking, and cornering. By reducing excessive deflection, it can contribute to improved suspension control and a more connected driving feel without requiring a complete suspension replacement. The kit is intended for rear trailing arm axle housing applications and is engineered to fit 1979-2003 Ford Mustang models. Verify vehicle application and suspension configuration before installation.
PROTHANE part number 6-309-BL provides a focused solution for replacing worn or deteriorated rear trailing arm bushings. The kit is supplied as a vehicle-specific suspension component set and is suitable for maintenance, restoration, and performance-oriented applications. Professional installation is recommended, and all mounting surfaces and related hardware should be inspected before installation to help ensure proper fitment and long-term performance.

Features:

• Application: Rear axle housing trailing arm bushing kit for 1979-2003 Ford Mustang

• Construction: Durable polyurethane and steel components

• Finish: Hard black polyurethane with zinc oxide steel components

• Performance: Helps reduce unwanted suspension deflection and improve rear axle control

• Brand and Part Number: PROTHANE 6-309-BL