Rust Buster Leaf Spring Mount for 2004-2012 Colorado/Canyon RB7503

RB7503L
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  • Fits 2004-2012 Chevrolet Colorado 
  • Fits 2004-2012 GMC Canyon 
  • Fits 2005-2007 Isuzu I-350/I-280 Pickup
  • Fits all Cab and Bed Configurations
  • Frame Section made from Heavy-Duty 11 Gauge Steel
  • Spring Mount made from Heavy-Duty 7 Gauge Steel
  • Caps the Frame between Rear Center Crossmember and Fuel Tank Crossmember
  • Measures 21.50" in Length
  • Includes Forward Leaf Spring Mount
  • Includes Class 10.9 Grade M14 Hardware for mounting Leaf Spring
  • Includes Factory Holes for a perfect fit
  • Removal of Front Bed Mount and Rear Cab Mount is required
  • If replacement Rear Cab Mount is needed, see RB7511
  • If replacement Front Bed Mount is needed, see RB7512
  • CNC Bent and Welded Construction
  • Protect with Rust Buster Rust Converter Paint RB9917
  • Welding Required
  • Ships with an oil protective coating to prevent oxidation during transit
  • Backed by our Lifetime Warranty

Are you a proud owner of a GMT355 chassis mid-size truck, like the Chevy Colorado or GMC Canyon? Then you're no doubt well aware of its versatile nature and affordability. This, coupled with its practicality, performance, and reliability, make the 355 series very popular among truck buyers and enthusiasts. However, due to the box frame design, water and debris (such as road salt) drainage is a challenge. This can lead to water and other material sitting in your truck's frame, causing rust, corrosion, and a lot of headaches. That's where Rust Buster steps in. We're committed to ensuring your GM truck overcomes this challenge, helping you maintain its structural integrity and keeping it powering through the roads for years to come. Trust us to be the shield against rust, safeguarding your investment and your adventures ahead.

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: RB7503 Installation Instructions.pdf 

Inventory Last Updated: Mar 14, 2025
California Residents: Prop 65 Warning

Customer Reviews

Based on 10 reviews
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J
Jerry
Rear spring mount

I would like to think Rust busters for the great part that I got I use the spring mount for a 2006 Chevy Colorado. It went easier than what I planned and I definitely get another piece from them if I need one again thank you so much for the great product that you guy’s make

G
George B Potter

These showed up super fast and are great quality

J
Justin
Great quality

We had been trying to fabricate frame pieces in house and decided to try rust buster to save time and money. The quality is fantastic. The fitment could not get any better highly recommend. You will save so much time and money.

r
ronald brown
2004 chevy colorado

Only had one bad spot on frame and rust buster had the exact section i needed.

D
Derek Olszewski
Leaf Spring Frame Section

This piece was the perfect repair for my son’s truck! High quality and a perfect fit got his truck back on the road safe! Great product, would recommend and purchase again!