Superpro SPF4857K Rear Differential Mount Bush Kit for 89-13 Lexus/Toyota

Vehicle Fitment

• 1989-1996 Lexus LS (XF10) (Various Trims, RWD)
• 1990-2000 Lexus SC (UZZ30/JZZ31) (Various Trims, RWD)
• 1991-1996 Toyota Soarer (Z3) (Various Engines, RWD)
• 1993-2002 Toyota Supra (JZA80) (Twin Turbo, RWD)
• 1993-2011 Lexus GS (S140/S160/S190) (Various Engines, RWD)
• 2005-2013 Lexus IS (XE20/GSE2) (Various Trims, RWD/AWD)

Features

• Rear differential to subframe polyurethane mount bushing kit
• Replaces soft OEM rubber bushings with more durable polyurethane
• Improves rear drivetrain stability and response under load
• Reduces unwanted differential movement and wheel hop
• Retains OEM-like NVH isolation for street use
• Lifetime manufacturer warranty covering materials and workmanship
• Designed to enhance handling precision and drivetrain feedback
• Precision molded for direct fit without modifications

Specifications

• Part Number: SPF4857K
• Position: Rear Differential-to-Subframe Mount
• Material: High-durability polyurethane
• Compatible Drivetrains: Primarily RWD (varies by model)
• Retention: Moderate durometer (80A) for comfort and compliance
• Installation: Rear chassis differential mount location
• Alignment: Recommended after installation

Included Components

• 2x Polyurethane rear differential mount bushings
• 3x Washers for secure installation

Product Description

The Superpro SPF4857K Rear Differential Mount Bush Kit is an engineered upgrade designed to replace the factory rubber differential mount bushings that connect the rear differential to the subframe on a wide range of Toyota and Lexus vehicles. OEM bushings can soften and deteriorate with age, allowing excessive differential movement under acceleration or braking. This kit uses high-quality polyurethane to improve drivetrain stability, reduce unwanted motion, and maintain alignment under load while retaining near-OEM cabin isolation for everyday driving.

Ideal for performance enthusiasts and daily drivers alike, the SPF4857K kit fits classic Toyota Supra (JZA80), Lexus GS series (S140/S160/S190), Lexus IS series (XE20/GSE2), as well as older Lexus LS and SC models, strengthening the rear differential mounting system. The included washers and polyurethane bushings are precision molded for direct fit and longevity. Whether you're addressing worn original bushings or seeking a more responsive rear drivetrain feel, this kit delivers enhanced performance and durability. Wheel alignment after installation is recommended to ensure optimal vehicle dynamics.

Fitment is confirmed through 2013. Coverage beyond 2013 is unconfirmed at time of listing and may vary by specific trim and drivetrain configuration; always verify with your VIN or manufacturer fitment guide before installation.