Dorman TM31087 Brake Master Cylinder Repair Kit

Reliable Brake Master Cylinder Repair Kit for Classic GM Vehicles

The Dorman TM31087 brake master cylinder repair kit offers a dependable solution for restoring brake system performance in select Buick, Cadillac, Chevrolet, Oldsmobile, and Pontiac models. Designed with quality EPDM rubber components, this kit supports effective maintenance and repair of 1-inch bore master cylinders.

• Includes EPDM rubber cups for durability and resistance to brake fluid
• Compatible with 1-inch bore brake master cylinders
• Standard replacement grade for reliable service
• Complete kit contains all necessary components for master cylinder repair
• Fits multiple GM classic models including Buick Riviera, Cadillac DeVille, Chevrolet Impala, and Pontiac Grand Prix

Detailed Product Description

The Dorman TM31087 brake master cylinder repair kit is engineered to restore the sealing and functionality of 1-inch bore master cylinders commonly found in older GM vehicles. The EPDM rubber cups included in the kit are specifically formulated to withstand brake fluid exposure, ensuring long-lasting performance. This standard replacement grade kit provides all essential parts needed to refurbish the master cylinder, helping to maintain proper hydraulic pressure and brake responsiveness.

Compatible with a range of Buick, Cadillac, Chevrolet, Oldsmobile, and Pontiac models such as the Buick Riviera, Cadillac Eldorado, Chevrolet Bel Air, Oldsmobile 98, and Pontiac Bonneville, this kit addresses common wear issues in vintage brake systems. The Dorman TM31087 part number ensures you receive the correct components tailored for these applications.

Common Applications and Repair Uses

• Restores proper sealing in worn or leaking brake master cylinders
• Eliminates brake fluid leaks that cause reduced braking efficiency
• Addresses spongy or soft brake pedal feel due to internal master cylinder wear
• Prevents contamination and moisture ingress in the hydraulic system
• Extends the service life of original master cylinder assemblies

Installation Notes and Tips

• Ensure the master cylinder bore size is 1 inch before installation
• Clean all components thoroughly to remove debris and old fluid residues
• Lubricate new EPDM cups with clean brake fluid during assembly
• Follow vehicle-specific service manual instructions for disassembly and reassembly
• Bleed the brake system properly after installation to remove air pockets

Quality Assurance and Warranty

Dorman manufactures the TM31087 brake master cylinder repair kit to meet standard replacement specifications, providing consistent quality and fitment for classic GM vehicles. The EPDM rubber components are selected for their chemical resistance and durability under typical brake system conditions. While specific warranty details may vary, Dorman products generally include coverage against defects in materials and workmanship to support professional repair confidence.