Brake Master Cylinder Cap

Brake Master Cylinder Cap Replacement

The brake master cylinder uses brake fluid to create the pressure needed for your brakes to activate and stop your vehicle. The brake master cylinder cap is the removable part of the cylinder reservoir that allows it to be filled with brake fluid, and is also responsible for sealing the reservoir to prevent leaks. This is important to the operation of your brakes, as a leaking master cylinder cap can prevent brake pressure from building appropriately and force caustic brake fluid out of the reservoir. If you notice brake fluid leaking around the master cylinder cap or reservoir, you may need to replace the cap or gasket to restore the seal. Low brake fluid levels will compromise the performance of your brakes, and over time could cause your brakes to stop working at all. It's recommended that you repair any brake fluid leaks as soon as possible to ensure continued braking safety. If you need a replacement master cylinder cap or gasket, or if you need to replace the master cylinder assembly, shop O'Reilly Auto Parts. Our parts professionals can help you find the replacement brake components needed to complete your repair.