Dorman D670166 Disc Brake Caliper Repair Kit - Front

Reliable Disc Brake Caliper Repair Kit for Select GM and Jeep Models

The Dorman D670166 Disc Brake Caliper Repair Kit offers a precise solution for restoring brake caliper function on various Buick, Chevrolet, GMC, Isuzu, Jeep, Saab, and Saturn vehicles. Designed to meet standard replacement requirements, this kit includes essential components to maintain brake system integrity and performance.

• Includes 2 piston boots and 2 piston seals made from durable EPDM rubber
• Boot length of 10.2 inches with a piston bore diameter of 2.125 inches
• Black piston boot and seal color for a clean, uniform appearance
• Compatible with multiple models including Chevrolet Colorado, GMC Canyon, Jeep Grand Cherokee, and Buick Enclave
• Standard replacement grade material ensuring reliable sealing and protection

Detailed Product Features and Specifications

The Dorman D670166 repair kit is engineered with EPDM rubber piston boots and seals, known for their resistance to heat, brake fluid, and environmental contaminants. The piston boot has an inside diameter of 37.5 mm and an outside diameter of 61.9 mm, with a thickness of 0.7 mm, providing a secure fit and effective dust protection. The piston seal features an outside diameter of 53.9 mm, designed to maintain hydraulic pressure within the caliper bore sized at 2.125 inches. This kit does not include bolts, pins, caliper grease, or installation hardware, focusing solely on the critical sealing components needed for caliper maintenance.

Compatible Vehicles and Applications

This disc brake caliper repair kit is compatible with a range of vehicles, including Buick Allure and Enclave, Chevrolet Colorado and Trailblazer, GMC Canyon and Envoy, Isuzu Ascender and Rodeo, Jeep Grand Cherokee and Liberty, Saab 9-7x, Saturn Outlook, and more. The D670166 part number ensures you receive the correct fitment for these models, helping maintain braking efficiency and safety.

Common Issues Addressed by This Repair Kit

• Leaking or damaged piston seals causing brake fluid loss
• Worn or cracked piston boots allowing dirt and moisture ingress
• Reduced caliper piston movement leading to uneven brake pad wear
• Brake drag or sticking caliper pistons due to seal failure
• Corrosion inside the caliper bore affecting piston operation

Installation Notes and Tips

Before installation, thoroughly clean the caliper bore and inspect for damage or corrosion. Replace the piston boots and seals carefully to avoid tearing the EPDM rubber components. Since this kit does not include bolts or grease, use manufacturer-recommended caliper grease and hardware during reassembly. Proper installation ensures optimal brake performance and extends the service life of the caliper.

Quality Assurance and Warranty Information

Dorman provides this disc brake caliper repair kit as a standard replacement part manufactured to meet OEM specifications. The EPDM rubber materials used in the piston boots and seals offer durability and resistance to brake system fluids and environmental factors. While specific warranty details may vary, Dorman typically backs its products with a limited warranty against defects in material and workmanship.