Rust Buster Over-Axle Frame Repair Kit For 1999-2006 Chevy Silverado/GMC Sierra RB7321

  • Unit price per 
Shipping calculated at checkout.

  • Fits 1999-2006 Chevrolet Silverado 1500
  • Fits 1999-2006 GMC Sierra 1500
  • Caps the Frame Rail between the Fuel Tank Crossmember and the Rear Shock Crossmember
  • Measures 22.25" in Length 
  • Made from Heavy Duty 7 Gauge Steel
  • Ships with an Oil protective coating to prevent Oxidation during transit
  • Welding required
  • Pairs well with Rust Buster Rust Paint RB9917
  • Backed by our Lifetime Warranty 

If you’re the proud owner of a 1999-2006 Chevy Silverado/GMC Sierra, you see the clear connection between the driving experience and words like bigger, faster, stronger, and smarter. The bed capacity and that powerful V8 engine are qualities that we have all come to love, and paired with the spacious interior ensures no doubt make this a truck worth saving. Unfortunately, although the motor will most likely allow this, road salt and moisture can leave their marks over time and contribute to corrosion throughout the truck. That’s where Rust Buster Frameworks draws the line, right between your GMT800 and mother nature. We’re dedicated to protecting and extending the life of your 1500 through our high-quality products, safeguarding your investment for the foreseeable future. Trust us to shield against rust and to keep you on the road, not trapped on the rack in the shop.

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.


Downloadable PDF RB7321 Installation Instructions.pdf 

Inventory Last Updated: Jun 17, 2024
California Residents: Prop 65 Warning

Customer Reviews

Based on 2 reviews
James Leszczynski
99 GMC Sierra frame repair

Repair over the axle great and I did it with the bed on and gas tank in the truck. Do this at your own risk. 2 1/2 hours. I think I have a new business model. Thank you for producing these much needed parts

Dale Mills
Keepin it Together

The heavy duty chunk of metal came at the perfect time. The install was pretty easy too.
Wonderful product and price. Will come back if I need too