Turn pedal effort into hydraulic brake pressure with this Dorman brake master cylinder, part number M39495 from the First Stop line, built entirely from new materials. It fits many classic Ford and Mercury vehicles, among them the 1971-1973 Ford Mustang, 1970-1973 Ford Maverick and 1970-1971 Ford Ranchero. See the "Vehicles it fits" section for the full list.
This unit is precision-engineered to match the design, function and performance of the original master cylinder on the listed applications. Its new, high-quality materials make it a safe, durable replacement.
- Precise replacement: the cylinder housing matches the casting material of the original part for similar performance.
- Durable design: every rubber component is made of a high-quality EPDM compound that resists glycol-based brake fluid.
- 100% new: made entirely from new materials for quality and safety.
- Strict specifications: built to meet rigorous SAE International standards.
A master cylinder may need replacing if you notice a soft or sinking brake pedal, fluid leaking around the cylinder, or a reservoir level that keeps dropping. Brake lines, hoses and calipers can cause similar symptoms, so diagnose the cause before replacing parts. If the original master cylinder is at fault, this Dorman master cylinder replaces it. Bleed the brake system after installation, following the vehicle service information.
Frequently Asked Questions
Will this Mustang master cylinder fit my 1972 Ford Mustang?
M39495 is listed for the 1971-1973 Ford Mustang. Check the "Vehicles it fits" section to confirm it matches your exact vehicle.
Does M39495 fit a 1970-1973 Ford Maverick or 1970-1971 Ford Ranchero?
Yes. It is listed for the 1970-1973 Ford Maverick and the 1970-1971 Ford Ranchero. The "Vehicles it fits" section shows every listed application.
What does a brake master cylinder do?
It converts force from the brake pedal into hydraulic pressure, which pushes brake fluid through the lines to the brakes at each wheel.
What are the rubber components made of?
All rubber components are made of a high-quality EPDM compound for resistance to glycol-based brake fluid.
What should I know about installing it?
Follow the vehicle service information. Master cylinders are typically bench bled before fitting, and the brake system must be bled afterward using the brake fluid specified for your vehicle.
