Rust Buster Forward Fuel Tank Crossmember For 2007-2021 Toyota Tundra RB8645

• Fits 2007-2021 Toyota Tundra
• OE Replacement for the forward Fuel Tank Crossmember, commonly referred to as the 4th Crossmember
• Also includes Mounting Bracket for Carrier Bearing
• Replaces Toyota OE Part Number 51204-0C100
• Includes Class 10.9 Mounting Hardware
• Made from Heavy Duty 11 Gauge Steel
• Protect with Rust Buster Rust Converter Paint RB9917
• Bolt on Installation
  
• Ships with an oil protective coating to prevent oxidation during transit
• Backed by our Lifetime Warranty

Rust Buster crossmembers are engineered as a direct-fit solution for restoring structural support and drivetrain mounting points compromised by rust and corrosion, without altering factory geometry or critical clearances. Designed to replace high-failure areas like transmission and fuel tank crossmembers, each unit is precision-formed to integrate with the original frame, ensuring proper alignment, secure mounting, and long-term durability. We also include any hardware that is needed for the install, unlike our competitors. By replacing only what’s compromised, you maintain structural integrity, reduce repair time and cost, and keep your vehicle performing as intended. Built from heavy-duty materials and proven in real-world conditions, Rust Buster crossmembers are an exact fit, OE Spec solution backed by our Lifetime Warranty.

Installation Instructions

Dowloadable PDF: RBxxx