DuraGo BD80118 Brake Drum - Rear

DuraGo BD80118 Rear Brake Drum

The DuraGo BD80118 is a cast iron rear brake drum built for specific Chevrolet Silverado 1500 and GMC Sierra 1500 applications. It is engineered to match the required fit, form, and function for the listed rear axle vehicles, with dimensions that support proper brake surface contact and drum alignment.

• Cast iron construction for durable brake service
• Full cast design
• Nominal drum diameter: 11.61 in. / 295 mm
• Maximum brake diameter (discard): 11.67 in. / 296.5 mm
• Brake surface width: 2.99 in. / 75.9 mm
• Outside diameter: 13.2 in. / 335.2 mm
• Center hole diameter: 3.1 in. / 78.7 mm
• Bolt circle diameter: 5.5 in. / 139.7 mm
• 6 bolt holes
• Overall height: 3.79 in. / 96.3 mm
• No ABS tone ring included
• No outer cooling fins

Fitment and Application

Compatible with rear brake service on 2005-2008 Chevrolet Silverado 1500, rear; 2007 Chevrolet Silverado 1500 Classic, rear; 2005-2008 GMC Sierra 1500, rear; and 2007 GMC Sierra 1500 Classic, rear. This fitment makes the BD80118 a direct-match option for rear drum replacement on these Silverado and Sierra applications.

This part cross-references Anchor 9764 and Edelmann 80118 for the same application.

Detailed Product Overview

DuraGo manufactures this brake drum through ISO-certified factories, with attention to dimensional accuracy and catalog coverage for professional repair use. The BD80118 is part of DuraGo’s brake drum and rotor program, which focuses on consistent fitment and OE-style replacement requirements. For technicians servicing a Chevrolet Silverado 1500 or GMC Sierra 1500 rear brake system, this drum provides the specified cast iron construction and critical measurements needed for proper installation and braking surface geometry.

What This Brake Drum Helps Address

• Rear brake pulsation caused by worn or out-of-spec drum surfaces
• Brake noise related to drum wear or scoring
• Reduced braking performance from excessive drum diameter wear
• Uneven rear brake contact on Silverado 1500 and Sierra 1500 applications
• Service replacement for damaged or corroded rear drums

Installation Notes and Tips

Verify the drum diameter, bolt pattern, center hole, and brake surface width against the existing part before installation. Confirm rear-position application and inspect shoes, hardware, and wheel cylinders during brake service so the new drum can seat correctly and maintain even contact. Measure the discard diameter before reuse decisions are made.

Quality Assurance

DuraGo backs this brake drum with manufacturing standards centered on fit, form, and function. The part is produced in ISO-certified factories and built to meet the dimensional requirements expected for professional brake service.