Dorman - HELP Brake Master Cylinder Reservoir Cap P/N:42040

Seal the top of your brake master cylinder and help keep moisture and debris out with the Dorman - HELP Brake Master Cylinder Reservoir Cap (MPN 42040). It drops in as a direct-fit replacement across a wide range of GM cars and trucks plus select Dodge Ram models — 1978-1986 Buick Century, 1985-1990 Buick Electra, 1988-1998 Chevrolet C1500, 1995-2000 Chevrolet Tahoe, 1994-1997 Dodge Ram 1500 and many more; all listed applications use engine coverage All. See the Buyer's Guide tab for the full list of 79 applications.

This cap closes off the master cylinder reservoir, helping retain brake fluid and limit airborne contaminants and moisture from reaching it. If your original cap is lost, cracked, or worn out, this is a dependable replacement.

• Designed to fit and function like the original: built to match the factory cap on the specified vehicles.
• Durable plastic build: molded from quality plastic in a black, gloss, rectangular design.
• Bail-clip attachment: secures with a bail clip.
• No gasket or seal included: ships without a gasket or seal — consult the vehicle service information.

Package contents: 1 brake master cylinder cap. Country of origin: Taiwan. Manufacturer part number 42040.