Dorman Rear Disc Brake Caliper Bolt HW5939 — OEM-fit, Corrosion-Resistant Replacement

The Dorman HW5939 rear disc brake caliper bolt is a direct-fit replacement designed to restore secure caliper mounting and reliable braking performance on the specified GM and related vehicles.

This replacement caliper bolt is manufactured to match the original part's dimensions and function so you can reinstall a brake caliper with confidence after a lost or fatigued fastener. Built from durable materials and covered by Dorman's product expertise, the HW5939 is intended for owners and technicians who need a dependable, service-ready bolt that fits the factory mounting points on select Buick, Cadillac, Chevrolet, GMC, Isuzu and Saturn models. Always verify your vehicle trim with the fitment tool before ordering.

Will this bolt fit my vehicle model and year?

The HW5939 is compatible with a range of GM-platform vehicles across specific years listed by the manufacturer. Fitment depends on vehicle make, model year and trim, so checking the garage tool ensures correct selection. If your vehicle appears in the compatible list, this bolt replaces the original caliper fastener at the rear disc brake assembly.

• Compatible makes: Buick, Cadillac, Chevrolet, GMC, Isuzu, Saturn
• Representative models: Enclave, CTS, SRX, SSR, Trailblazer, Traverse, Acadia, Envoy, Ascender, Outlook
• Model years: covers multiple years from early 2000s to 2011 depending on model
• Always confirm exact trim and axle/ brake configuration with the fitment tool

How is the HW5939 built and how long will it last?

Dorman designs this caliper bolt from quality metals to provide a long service life under normal driving conditions. The bolt is engineered to resist fatigue and maintain clamp force required for safe caliper mounting, delivering a practical solution when the original bolt is corroded, rounded or missing. Routine inspection during brake service helps ensure longevity.

• Constructed from corrosion-resistant metal for durability
• Manufactured to OEM-matching dimensions for proper engagement
• Intended as a like-for-like replacement for failed bolts
• Backed by Dorman's technical support and product validation

Can I install this bolt myself and what tools are required?

Installation is straightforward for anyone comfortable with basic brake-service procedures; the bolt secures the rear caliper to its bracket in the same way as the factory piece. Use the correct size socket or wrench and follow proper torque specifications from the vehicle manufacturer to avoid over- or under-tightening. If you are not experienced with brake work, a professional mechanic can complete the job quickly.

• Typical tools: socket or wrench set, torque wrench for final tightening
• Installation aligns with standard caliper mounting steps
• Replace any damaged or missing hardware and check for caliper movement
• Torque to vehicle maker’s specification for safety and wear prevention

What should I check after replacing a caliper bolt?

After installation, visually confirm the bolt is fully seated and torqued, then perform a brief test drive to listen for unusual noises and verify brake feel. Re-inspect the fastener after the first few miles of service to ensure it remains secure. Regular brake inspections during routine maintenance will help catch any developing issues early.

• Verify bolt head is flush and threads properly engaged
• Confirm torque specification is met and recheck after short road test
• Inspect surrounding components for wear, corrosion or misalignment
• Monitor braking performance and address any unusual vibration or noise

Who is this part for: The Dorman HW5939 rear disc brake caliper bolt is intended for DIYers, independent repair shops and fleet technicians servicing compatible GM-platform vehicles that need a reliable replacement fastener. It’s appropriate when the original bolt is corroded, stripped, lost during brake work, or has failed from fatigue. If you require an OEM-matching, durable caliper mounting bolt and you confirm fitment for your model and year, this Dorman replacement provides a practical, vehicle-specific solution.

• Features: direct replacement, durable construction, reliable fit
• Reminder: always confirm vehicle fitment using the garage tool before purchase