Rust Buster Rear Body Mount For 2007-2021 Toyota Tundra RB8640

RB8640L
  • Unit price per 
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  • Fits 2007-2021 Toyota Tundra
  • Fits all Single Cab & Double Cab (Ext Cab)   
  • Will not fit the Crew Max
  • Replaces the Factory Rear Cab Mount
  • Built to OE Specs
  • Replaces Toyota OE Number(s) 51705-0C030 & 51706-0C030
  • Includes Class 10.9 Hardware for Bushing Mount
  • Made with Heavy Duty 11 Gauge Steel
  • Ships with an Oil protective coating to prevent Oxidation during transit
  • Welding required
  • Protect with Rust Buster Rust Converter Paint RB9917
  • Backed by our Lifetime Warranty 

Rust Buster Cab & Bed Mounts are engineered as a safe, proven solution for restoring critical body-to-frame connection points without compromising vehicle alignment or OE mounting geometry. Designed to address common corrosion and structural fatigue areas, each mount is precision-formed to integrate seamlessly with the original frame, ensuring proper fitment, secure attachment, and long-term durability.

By replacing only what’s compromised, you maintain factory body alignment, eliminate unwanted movement, and restore structural integrity without unnecessary frame replacement. Built from heavy-duty materials and backed by decades of engineering expertise, every Rust Buster cab and bed mount is designed to perform in real-world conditions — and supported by our Lifetime Warranty.


Installation Instructions

Dowloadable PDF: RBxxx

Inventory Last Updated: Sep 27, 2026
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