Dorman 42030 Brake Master Cylinder Reservoir Cap

Overview of Dorman Brake Master Cylinder Reservoir Cap 42030

The Dorman 42030 brake master cylinder reservoir cap is designed to provide a reliable seal for the brake fluid reservoir in select Buick, Cadillac, Oldsmobile, and Pontiac vehicles. Made from durable plastic, this round-shaped cap ensures proper containment of brake fluid without the need for an additional seal or gasket.

• Constructed from durable plastic material
• Round shape for secure fitment
• No gasket or seal required or included
• Includes one master cylinder reservoir cap per package
• Compatible with multiple Buick, Cadillac, Oldsmobile, and Pontiac models

Product Details and Specifications

The Dorman 42030 brake master cylinder reservoir cap is engineered to meet the specifications required for proper brake system maintenance. Its plastic construction offers resistance to brake fluid corrosion and environmental factors. The round design ensures a tight fit on the master cylinder reservoir, preventing fluid leaks and contamination. This cap does not include a gasket or seal, as it is designed to function without one, simplifying installation and maintenance.

Compatible Vehicles and Applications

This master cylinder reservoir cap is compatible with a range of vehicles including Buick 60 Special, 88, 98, LeSabre, Park Avenue, and Riviera; Cadillac DeVille, Fleetwood; Oldsmobile Aurora, Delta 88; and Pontiac Bonneville and Commercial Chassis models. The Dorman 42030 is suitable for maintaining the brake fluid reservoir integrity on these specific makes and models.

Common Issues Addressed by This Part

• Prevents brake fluid leakage from the master cylinder reservoir
• Protects brake fluid from contamination and moisture ingress
• Maintains proper brake system pressure and performance
• Replaces worn or damaged reservoir caps to ensure system reliability
• Helps avoid brake system warning lights related to fluid level

Installation Notes and Tips

Installation of the Dorman 42030 brake master cylinder reservoir cap is straightforward. Ensure the reservoir opening is clean and free of debris before placing the cap. Align the round cap properly and press down firmly until it seats securely. Since no gasket or seal is required, avoid forcing the cap to prevent damage. Regular inspection of the cap during brake system maintenance is recommended to ensure continued proper fit and function.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit and function. The 42030 brake master cylinder reservoir cap undergoes quality checks to ensure durability and compatibility with specified vehicle models. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in material and workmanship. Refer to Dorman’s official documentation for exact warranty terms.