Chevrolet Silverado 3500HD Crossmember - Rear - RustBuster - Spare Tire - `11-`18. A direct-fit replacement rear spare tire crossmember for 2011–2018 Silverado 3500HD models, offered under the RustBuster name for corrosion resistance and long-term service life.

This crossmember replaces the factory unit and restores the proper mounting location and support for the spare tire. It’s designed for drivers who need a dependable replacement after rust or collision damage and for enthusiasts modifying their underbody without changing factory attachment points. The design keeps the factory mounting geometry so the original spare carrier and hardware can be retained, allowing a straightforward installation for experienced technicians or our shop teams.

Features

• Fitment: 2011–2018 Chevrolet Silverado 3500HD rear spare tire crossmember
• RustBuster finish to resist corrosion compared to untreated replacements
• Direct-fit design preserves OEM mounting points for the spare carrier
• Robust construction intended for long-term service and road use
• Compatible with factory spare mounting hardware and carrier

If you have questions about fitment, installation, or compatibility with aftermarket carriers, call us directly — we’re happy to help. We have two locations offering installation and customization services: Austin, Texas and the Los Angeles, California area. Call 512-982-9393 (TX) or 562-981-6800 (CA).

Thinking about purchasing multiple items? Contact us for shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov