Dorman M73354 Brake Master Cylinder

Brake Master Cylinder for Reliable Hydraulic Pressure

The Dorman M73354 brake master cylinder is a direct-style replacement for specific vehicle applications that need consistent hydraulic braking performance. Built with new, high-quality materials and a cast iron body, it is engineered to match the original master cylinder’s design, function, and performance.

With a 1-inch bore, integrated reservoir, and two outlets, this master cylinder is built for brake system service on select vehicles, including Ford F-150 and Ford F-250 applications where OE-style brake hydraulics are required.

Key Features

• Brake master cylinder for brake hydraulic repair
• 1-inch bore diameter for OE-style brake pedal response
• Cast iron master cylinder construction
• Reservoir included
• Two outlet ports for brake line connection
• Rearward outlet size: 9/16-18
• Secondary outlet thread diameter: 0.5
• Part number: M73354

Detailed Description

Dorman M73354 is a replacement brake master cylinder designed to restore hydraulic pressure in the brake system. It is built from new materials and shaped to follow the original equipment design, making it a practical choice for brake service on select Ford F-150 and Ford F-250 models. The cast iron housing supports durability, while the included reservoir simplifies replacement of the master cylinder assembly. This part cross-references BBB Industries 11428 for the same application.

Common Problems This Part Can Help Address

• Low or inconsistent brake pedal pressure
• Brake fluid leakage at the master cylinder
• Internal master cylinder wear causing poor braking response
• Spongy pedal feel after hydraulic component failure
• Brake system performance loss from a damaged OE cylinder

Installation Notes and Tips

Before installation, verify outlet thread sizes, bore diameter, and reservoir configuration against the original unit. Bench bleeding the master cylinder before final installation helps remove trapped air from the hydraulic circuit. Because mounting hardware is not included, reuse or source the required hardware separately if needed. After installation, bleed the brake system thoroughly and confirm a firm pedal before returning the vehicle to service.

Quality Assurance

This Dorman brake master cylinder is precision-engineered to match original design and performance requirements for the listed applications. It is manufactured from new, high-quality materials to support safe, durable brake system replacement.