Raybestos MC36291 Brake Master Cylinder

Raybestos MC36291 Master Cylinder Overview

The Raybestos Element3 New MC36291 brake master cylinder is built for select Ford and Mercury full-size applications that require a 1.000-inch bore, iron construction, and a two-port hydraulic layout. It is a direct-fit brake hydraulics replacement for vehicles such as the Ford LTD, Ford Thunderbird, Mercury Colony Park, and Mercury Marquis.

Raybestos Element3 New focuses on replacement brake components with application-specific fitment and OE-style specifications. The MC36291 is a practical choice when servicing a brake master cylinder on 1969-1971 Ford and Mercury vehicles with the listed hydraulic port and mounting requirements.

Key Features

• Brake master cylinder for brake hydraulics service
• Iron master cylinder body for traditional OE-style construction
• 1.000-inch bore size
• 2 mounting holes with 0.406-inch mounting hole diameter
• 2 hydraulic ports
• Primary port thread: 3/8"-24
• Secondary port thread: 1/2"-20
• Raybestos Element3 New product line

Detailed Description

The Raybestos MC36291 brake master cylinder is engineered around the listed bore size, port threads, and mounting dimensions to support proper hydraulic connection and brake system service. Its iron housing provides a familiar OE-style material choice for classic Ford and Mercury brake applications, while the dual-port design matches the original hydraulic layout used on the confirmed vehicles. This part number, MC36291, is listed for 1969-1971 Ford LTD, 1970-1971 Ford Thunderbird, 1969-1971 Mercury Colony Park, and 1969-1971 Mercury Marquis, including specific police package disc brake caliper applications where noted.

This part cross-references Dorman - First Stop M73327 for the same application.

Vehicle Fitment

• Fits 1969-1971 Ford LTD, N/A; Disc Brake Caliper for Police Package applications; Element3; New
• Fits 1971 Ford LTD, N/A; Except Commercial Chassis; without Police Package; Element3; New
• Fits 1970-1971 Ford Thunderbird, N/A; Element3; New
• Fits 1969-1971 Mercury Colony Park, N/A; Element3; New
• Fits 1969-1971 Mercury Marquis, N/A; Disc Brake Caliper for Police Package applications; Element3; New

Common Replacement Reasons

• Brake pedal travel that is longer than normal
• Loss of hydraulic pressure in the brake system
• External fluid leakage at the master cylinder
• Internal seal wear affecting brake response
• Restoration or maintenance of original-style brake hydraulics

Installation Notes and Tips

Verify the bore size, mounting hole spacing, and port thread sizes before installation. Confirm the vehicle’s brake configuration and application notes, especially for Ford LTD and Mercury Marquis police package listings and the 1971 Ford LTD exception for commercial chassis and non-police package use. Bench bleeding the master cylinder before final installation helps reduce trapped air in the hydraulic system and supports proper pedal feel after service.

Quality Assurance

Raybestos Element3 New brake components are built for application-specific replacement needs in brake hydraulics service. The MC36291 follows the listed fitment and dimensional specifications for confirmed Ford and Mercury applications.