Dorman HELP Brake Master Cylinder Reservoir Cap Gasket for 1981-2005 General Motors 42079

Brake master cylinder reservoir cap gasket for 1981 to 2005 General Motors vehicles used to replace worn or leaking original seals.

Built to meet the manufacturer's design intent for reliable service, this gasket is engineered for durability and dependable performance in daily driving conditions.

Key Features

• Direct replacement for specified General Motors brake master cylinder reservoir caps
• Engineered to match original equipment form, fit, and function
• Constructed from quality materials for long-lasting sealing power
• Validated through testing to ensure reliable performance
• Part number 42079 replaces GM part 18006074

Benefits

• Prevents brake fluid leaks at the reservoir cap connection
• Restores proper sealing to maintain brake system integrity
• Reduces the risk of repeat repairs with durable construction
• Ensures a smooth installation process with precise fitment
• Helps keep your vehicle operating safely and efficiently
• Backed by over a century of automotive experience

Application

Ideal for owners of older General Motors trucks, SUVs, and cars requiring a trustworthy seal replacement to fix fluid seepage or cap ventilation issues.

Fitment Notes

• Compatible with select General Motors models from years 1981 through 2005
• Verify specific vehicle compatibility before purchase

Why Choose Dorman - HELP?

• Dorman parts are engineered as direct-fit replacements designed to match OE standards
• Built with a strong focus on fit, durability, and dependable performance
• Made to stand up to daily driving demands and reduce repair risks

What's in the Box

• 1 Brake Master Cylinder Reservoir Cap Gasket

Item Dimensions

• 8.3 inches x 7.3 inches x 1.3 inches
• Weight: 0.2 lbs