Dorman 42108 Brake Master Cylinder Reservoir Cap and Gasket Kit

Brake Master Cylinder Reservoir Cap and Gasket Kit

Dorman 42108 is a brake master cylinder reservoir cap and gasket kit for repairing a damaged or leaking reservoir cap on select vehicles. It is built with quality components to match the original parts used on the application and restore a proper seal at the reservoir.

Compatible With a wide range of Chevrolet, GMC, Dodge, Cadillac, Buick, Oldsmobile, and Pontiac vehicles, including Chevrolet C1500, GMC K1500, and Dodge Ram 1500 applications. The Dorman 42108 part number is also used across multiple GM brake service applications where reservoir sealing is critical.

• Direct replacement for the original brake master cylinder reservoir cap and gasket assembly
• Helps restore a secure seal at the brake fluid reservoir
• Built from quality components for dependable service
• Fits a broad range of GM and Dodge brake service applications
• Dorman 42108 for repair-focused brake maintenance

Detailed Product Overview

This brake master cylinder reservoir cap and gasket kit is made for vehicles that need a replacement cap seal due to wear, cracking, or leakage. It supports brake system service on applications such as 1988-1998 Chevrolet C1500, 1992-1999 GMC K1500 Suburban, and 1994-1997 Dodge Ram 2500, along with many other listed Buick, Cadillac, Oldsmobile, Pontiac, Chevrolet, and GMC models. If you are searching for a Dorman 42108 brake reservoir cap solution for GM truck and SUV brake maintenance, this kit provides the matching service parts needed for the repair.

What It Helps Fix

• Brake fluid seepage around the master cylinder reservoir cap
• Cracked, hardened, or flattened reservoir gaskets
• Loss of sealing at the brake fluid reservoir opening
• Service issues caused by a damaged cap on the master cylinder reservoir
• Brake maintenance needs on older GM and Dodge vehicles

Installation Notes and Tips

Inspect the reservoir neck and sealing surface before installation. Clean the mating area thoroughly, then verify the cap seats evenly and the gasket is positioned correctly. Confirm vehicle fitment by year, make, model, and brake configuration before ordering, especially on heavy-duty and dual rear wheel applications.

Quality Assurance

Dorman engineers this replacement kit to match the original parts required for the listed applications and to support reliable brake system repair. The part number 42108 is built for direct-fit service on the specified vehicles.