Dorman M39849 Brake Master Cylinder

Reliable Brake Master Cylinder for Precise Hydraulic Control

The Dorman M39849 brake master cylinder is engineered to provide consistent hydraulic pressure for your vehicle's braking system. Designed with durable aluminum construction and dual bore diameters, this master cylinder supports effective brake fluid management for a range of applications.

• Aluminum master cylinder material for corrosion resistance and durability
• Dual bore diameters of 24 mm and 36 mm for balanced hydraulic pressure
• Includes reservoir for brake fluid storage
• Two outlet ports with rearward outlet size 1/2-20 and secondary outlet thread diameter 9/16-18
• Package contains the master cylinder only; mounting hardware not included

Detailed Product Features and Specifications

The Dorman M39849 brake master cylinder features a dual bore design with 24 mm and 36 mm diameters, allowing for precise modulation of brake fluid pressure to both front and rear brakes. Constructed from aluminum, this master cylinder offers resistance to corrosion and heat, ensuring long-term reliability. The included reservoir simplifies brake fluid management, while the two outlet ports with specific thread sizes (1/2-20 rearward outlet and 9/16-18 secondary outlet) provide compatibility with various brake line fittings. This part is ideal for vehicles requiring a master cylinder with these specifications, including certain Ford, Chevrolet, and Dodge models commonly found in brake hydraulics applications.

Common Applications and Problem Resolution

• Restores proper brake pedal feel and hydraulic pressure
• Replaces leaking or damaged master cylinders causing brake fluid loss
• Addresses spongy or unresponsive brake pedal issues
• Solves uneven braking due to faulty master cylinder bore wear
• Supports brake system rebuilds requiring a compatible aluminum master cylinder

Installation Notes and Tips

Installation of the Dorman M39849 master cylinder requires careful attention to brake line connections and proper bleeding of the brake system to remove air. Since mounting hardware is not included, retain original mounting bolts or source compatible hardware. Verify thread sizes of brake lines to match the 1/2-20 and 9/16-18 outlet ports. It is recommended to inspect all brake components during installation to ensure system integrity and safety.

Quality Assurance and Warranty Information

Dorman manufactures the M39849 master cylinder to meet or exceed OEM standards for fit and function. The aluminum construction and precise bore diameters contribute to consistent braking performance. This part is backed by Dorman's limited warranty, providing coverage against defects in material and workmanship under normal use conditions.