Prothane 7-2040-BL Total Polyurethane Suspension Bushing Kit Black Multi-Leaf with Transmission Mount

The Prothane 7-2040-BL is a complete polyurethane suspension bushing kit designed as a comprehensive, one-purchase solution for restoring and upgrading your classic Chevrolet's suspension. This black total kit is specifically engineered for multi-leaf spring applications and includes a transmission mount, covering virtually every rubber bushing location on the vehicle.

Factory rubber bushings wear out over time due to exposure to UV rays, road grime, heat, and vehicle fluids — causing loose, imprecise suspension behavior. Prothane's polyurethane material is significantly firmer than OEM rubber, delivering improved handling response, more consistent alignment angles, and far greater longevity. While polyurethane may produce a slight increase in NVH (noise, vibration, and harshness) compared to stock rubber, the performance and durability gains make it the preferred choice for performance builds and restorations alike.

The -BL (black) version features a small amount of graphite blended into the polyurethane compound, which helps reduce bushing squeak during normal operation. Proper lubrication at installation using the included Prothane Super Grease is recommended for best results.

Kit Includes:

• Ball joint boots
• Body mounts
• Front control arm bushings
• Spring pads and leaf spring shackle bushings (multi-leaf)
• Transmission mount bushing
• Prothane Super Grease for installation lubrication

Key Features:

• Material: High-performance black polyurethane with graphite additive
• Color: Black (graphite-infused for reduced squeak)
• Spring Type: Multi-leaf rear spring application
• Made in the USA
• Lifetime warranty — backed for the life of the original purchaser's vehicle

This total kit provides everything needed to fully refresh the suspension bushings in a single purchase, saving time and money compared to sourcing individual components separately.