Keep your braking system sealed and protected with this 1965–1966 Ford Mustang Master Cylinder Cap Gasket – Drum Brakes.

Designed specifically for drum brake applications, this gasket installs beneath the master cylinder cap to create a tight, leak-resistant seal. It helps prevent brake fluid contamination, moisture intrusion, and fluid loss—protecting the integrity of your classic Ford Mustang braking system.

Product Features:

• Application: 1965–1966 Ford Mustang

• Brake Type: Drum Brakes

• Location: Master Cylinder Cap

• Function: Seals brake fluid reservoir

• Material: Brake fluid–resistant rubber construction

• Fitment: Direct OEM-style replacement

Over time, original cap gaskets can harden, crack, or deteriorate—leading to leaks and contamination that can compromise braking performance. Replacing this simple but essential component ensures a proper seal and helps maintain safe, consistent brake operation.

Ideal for restorations, routine maintenance, or master cylinder service, this cap gasket is a small detail that makes a big difference in protecting your Mustang’s braking system.

Replace yours today and keep your classic braking system sealed and secure!