Dorman M39859 Brake Master Cylinder

Reliable Brake Master Cylinder for Toyota Celica

The Dorman M39859 Brake Master Cylinder is engineered to restore proper brake hydraulics for Toyota Celica models. Designed with precision, this master cylinder includes a reservoir and sensor to ensure optimal brake system performance.

Key Features of the Dorman M39859 Brake Master Cylinder

• Master cylinder bore diameter: 0.938 inches for accurate hydraulic pressure
• Constructed from durable aluminum material for corrosion resistance
• Includes reservoir for fluid storage and sensor for system monitoring
• Two outlets with rearward outlet size M10 x 1.0 and thread pitch 1.0
• Secondary outlet thread diameter of 10 mm
• Package contains the master cylinder unit; mounting hardware not included

Detailed Product Description

The Dorman M39859 Brake Master Cylinder is specifically designed for Toyota Celica vehicles, providing a precise fit and reliable brake hydraulics function. Its aluminum construction offers strength and resistance to corrosion, extending the service life of the component. The included reservoir allows for proper brake fluid containment, while the integrated sensor supports brake system diagnostics and safety features. With a bore diameter of 0.938 inches and dual outlets, this master cylinder ensures consistent hydraulic pressure to the brake calipers or wheel cylinders. The rearward outlet size of M10 x 1.0 and a thread pitch of 1.0 facilitate secure connections within the brake system.

Common Applications and Issues Addressed

• Restores brake pressure loss due to worn or damaged master cylinder
• Eliminates brake fluid leaks from the master cylinder reservoir or outlets
• Resolves brake pedal sinking or sponginess caused by internal seal failure
• Supports brake system sensor functionality for warning light accuracy
• Replaces corroded or cracked aluminum master cylinders in Toyota Celica models

Installation Notes and Tips

• Compatible with Toyota Celica models; verify fitment before installation
• Mounting hardware is not included; reuse existing hardware or source separately
• Bleed the brake system thoroughly after installation to remove air
• Inspect brake lines and connections for leaks during installation
• Handle the sensor connection carefully to avoid damage

Quality Assurance and Warranty Information

Dorman manufactures the M39859 Brake Master Cylinder to meet or exceed OEM specifications for Toyota Celica brake hydraulics. The aluminum construction and integrated sensor contribute to reliable performance and durability. While mounting hardware is not included, the product undergoes quality checks to ensure proper fit and function. Warranty coverage details should be confirmed through the product documentation or supplier.