Dorman M39848 Brake Master Cylinder

Reliable Brake Master Cylinder for Subaru Legacy

The Dorman M39848 Brake Master Cylinder is engineered to provide consistent hydraulic pressure for your Subaru Legacy's braking system. Designed with precision, this master cylinder ensures optimal brake performance and safety.

• Master cylinder bore diameter: 1 inch
• Constructed from durable aluminum material
• Includes reservoir for fluid storage
• Equipped with a sensor for monitoring brake fluid levels
• Features three outlets with a secondary outlet thread diameter of 10 mm
• Rearward outlet size: M10 x 1.0 with a thread pitch of 1.0
• Package contains the master cylinder only; mounting hardware not included

Product Details and Specifications

This Dorman brake master cylinder (part number M39848) is specifically designed for Subaru Legacy models, ensuring compatibility and reliable fitment. The aluminum construction offers corrosion resistance and durability under demanding conditions. The 1-inch bore diameter supports effective hydraulic pressure, while the included reservoir and sensor help maintain proper brake fluid levels and system monitoring. With three outlets, including a secondary outlet with a 10 mm thread diameter and a rearward outlet sized M10 x 1.0, this master cylinder integrates seamlessly with the brake hydraulics system of your Subaru Legacy.

Common Applications and Problem Resolution

• Restores proper brake pedal feel and responsiveness
• Replaces leaking or damaged master cylinders causing brake fluid loss
• Addresses brake warning light issues related to sensor failure
• Solves inconsistent hydraulic pressure affecting braking performance
• Eliminates spongy or soft brake pedal symptoms

Installation Notes and Tips

Installation of the Dorman M39848 brake master cylinder requires basic mechanical skills and proper brake system knowledge. Note that mounting hardware is not included, so retain original fasteners or acquire appropriate replacements. Ensure the brake fluid reservoir is properly filled and bleed the brake system thoroughly after installation to remove air and restore optimal braking function. Verify sensor connections to maintain accurate brake fluid level monitoring.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The M39848 brake master cylinder undergoes rigorous quality control to ensure durability and reliable performance in Subaru Legacy vehicles. Please refer to Dorman's warranty policy for specific coverage details.