Rust Buster Rear Body Frame Mount For 4Runner & FJ Cruiser RB8431

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  • Fits 2003-2009 Toyota 4Runner
  • Fits 2007-2014 Toyota FJ Cruiser
  • Fits both V6 & V8 Engines
  • Replaces Toyota Part Numbers 51709-35040 & 51706-35060
  • Built to OE Spec as a direct replacement
  • Made from Heavy Duty 11 Gauge Steel
  • Mounts at the end of the frame rail
  • Laser cut and CNC Bent for a perfect fit
  • Pairs well with Rust Buster Rust Paint RB9917
  • Welding Required
  • Ships with an oil protective coating to prevent oxidation during transit
  • Backed by our Lifetime Warranty

The Rubber Body Mount Bushings on Toyota 4Runners & FJ Cruisers will trap water and start to erode the Body Frame Mounts slowly over time.  Add Road Salt and Debris and you have a recipe for a Rust Disaster.  This is where another Rust Buster Frame Repair Kit comes in with some OE Spec Frame Body Mounts so you can get your trusty steed back on the road.  Don't forget to purchase some Rust Buster Rust Paint RB9917 to complete the job.

By utilizing the latest in Scanner Solutions and CAD Software Rust Busters crack engineering team is able to capture your specific model truck's frame contours down to the smallest detail. We take a Modern Approach and tailors each frame section to fit your vehicle and application with the unique vision that puts Fitment, Installation Ease and OE compatibility to the top of our priority list. We strive to set ourselves apart from the competition by being better in every area the current market has to offer, with a combined 45 of experience under Rust Busters Engineering staff we are here to put an end to all your rust issues.  Because of this, we back all of our frame pieces with a Lifetime Warranty.

Installation Instructions

Downloadable PDF: RB8431 Installation Instructions.pdf

Inventory Last Updated: May 22, 2024
California Residents: Prop 65 Warning

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