Dorman D670171 Disc Brake Caliper Repair Kit - Front

Reliable Disc Brake Caliper Repair Kit for GM and Isuzu Vehicles

The Dorman D670171 Disc Brake Caliper Repair Kit is designed to restore the braking performance of select Buick, Chevrolet, GMC, and Isuzu models. This kit provides essential components to maintain the integrity of your disc brake calipers, ensuring safe and consistent braking.

• Includes 2 piston boots and 2 piston seals made from durable EPDM rubber
• Boot length of 8.5 inches with precise piston boot inside diameter of 38.3 mm
• Fits piston bore diameter of 45 mm, suitable for specific GM and Isuzu models
• Black piston boot and seal colors for a clean, professional appearance
• Standard replacement grade material designed for reliable service

Durable EPDM Rubber Components for Effective Brake Caliper Repair

This Dorman disc brake caliper repair kit features piston boots and seals constructed from EPDM rubber, known for its resistance to heat, brake fluid, and environmental contaminants. The piston boot has an outside diameter of 61 mm and a thickness of 0.7 mm, providing a secure seal around the caliper piston. The piston seal’s outside diameter measures 2.046 inches, ensuring a precise fit within the 45 mm bore size. These components help prevent brake fluid leaks and protect the caliper piston from dirt and moisture, which can cause premature wear or failure.

Compatible With Buick, Chevrolet, GMC, and Isuzu Models

This repair kit is compatible with a range of vehicles including the Buick Rainier, Chevrolet Trailblazer and SSR, GMC Envoy, and Isuzu Ascender. The Dorman part number D670171 is specifically designed to meet the requirements of these models, making it a suitable choice for restoring brake caliper function on these vehicles.

Common Issues Addressed by This Repair Kit

• Leaking or damaged piston seals causing brake fluid loss
• Worn or torn piston boots allowing dirt and moisture ingress
• Reduced braking efficiency due to caliper piston contamination
• Brake drag or uneven pad wear from compromised caliper seals
• Corrosion or damage to caliper piston surfaces

Installation Notes and Tips

Installation requires removal of the brake caliper and careful disassembly to replace the piston boots and seals. Ensure the piston bore and piston surfaces are clean and free of debris before installing new components. Lubrication with appropriate brake caliper grease (not included) is recommended to ease installation and prevent seal damage. This kit does not include bolts or installation hardware, so retain original fasteners or source replacements as needed.

Quality Assurance and Warranty Information

Dorman’s D670171 repair kit is manufactured to standard replacement grade specifications, providing reliable performance for routine brake maintenance. The EPDM rubber materials used are selected for durability and resistance to brake system fluids. While specific warranty details are not provided, Dorman products typically come with a limited warranty against defects in material and workmanship.