Dorman M630616 Brake Master Cylinder

Reliable Brake Master Cylinder for Subaru Forester and Impreza

The Dorman M630616 Brake Master Cylinder is engineered to restore proper brake hydraulics in your Subaru Forester or Impreza. Designed with precision, this master cylinder includes a reservoir and sensor to ensure consistent brake fluid management and system monitoring.

• Master cylinder bore diameter: 1.063 inches for accurate hydraulic pressure
• Constructed from durable aluminum material for corrosion resistance
• Includes reservoir for brake fluid storage
• Equipped with a sensor for brake system monitoring
• Four outlets with secondary outlet thread diameter of 10 mm
• Rearward outlet size: M10 x 1.0 with 1.0 thread pitch

Product Details and Specifications

This Dorman brake master cylinder (part number M630616) is specifically designed for Subaru Forester and Impreza models, ensuring compatibility with the vehicle’s brake hydraulics system. The aluminum construction provides strength and resistance to corrosion, which is critical for maintaining brake system integrity over time. The included reservoir allows for proper brake fluid containment, while the integrated sensor supports real-time monitoring of brake fluid levels or pressure, depending on the vehicle’s system design.

The master cylinder features a bore diameter of 1.063 inches, which is essential for generating the correct hydraulic pressure to the brake calipers or wheel cylinders. It has four outlets, including a secondary outlet with a 10 mm thread diameter and a rearward outlet sized M10 x 1.0 with a 1.0 thread pitch, matching OEM specifications for a secure fit.

Common Applications and Problem Resolution

• Restores brake pressure loss due to worn or damaged master cylinder
• Replaces leaking or cracked brake fluid reservoir
• Resolves brake warning light issues related to sensor failure
• Fixes inconsistent brake pedal feel caused by internal cylinder wear
• Addresses brake fluid contamination or air ingress in the hydraulic system

Installation Notes and Tips

Installation of the Dorman M630616 brake master cylinder requires proper brake fluid handling and bleeding procedures to avoid air in the brake lines. Ensure the vehicle is compatible with the specified bore diameter and outlet thread sizes. Since mounting hardware is not included, retain original fasteners or source appropriate replacements. Verify sensor connections are secure to maintain brake system monitoring functionality.

Quality Assurance and Warranty

Dorman brake master cylinders are manufactured to meet or exceed OEM standards for fit, form, and function. This part undergoes rigorous quality control to ensure durability and reliable performance in Subaru Forester and Impreza brake systems. Warranty coverage details can be obtained from the product documentation or manufacturer.