Dorman M39591 Brake Master Cylinder

Reliable Brake Master Cylinder for Toyota Celica

The Dorman M39591 Brake Master Cylinder is engineered to restore proper brake hydraulics for Toyota Celica models. Designed with precision, this master cylinder ensures consistent brake fluid pressure and reliable stopping power.

• Master cylinder bore diameter: 0.938 inches for accurate fluid displacement
• Constructed from durable aluminum material for corrosion resistance
• Includes reservoir for brake fluid storage
• Equipped with a sensor to monitor brake system status
• Two outlets with rearward outlet size M10 x 1.0 and thread pitch 1.0

Product Details and Specifications

The Dorman M39591 brake master cylinder features a 0.938-inch bore diameter, which is critical for maintaining the correct hydraulic pressure in the brake system of Toyota Celica vehicles. Its aluminum construction offers strength and resistance to corrosion, extending the service life of the component. This master cylinder comes with an integrated reservoir, allowing for proper brake fluid containment and circulation. Additionally, the included sensor provides feedback to the vehicle’s brake system, enhancing safety and performance. The unit has two outlets, with the secondary outlet thread diameter measuring 10 mm and a rearward outlet size of M10 x 1.0, ensuring compatibility with the brake lines on the Toyota Celica. The thread pitch of 1.0 further confirms proper fitment and secure connections.

Compatible Applications and Common Issues Addressed

• Replacement for worn or leaking brake master cylinders on Toyota Celica
• Resolves brake pedal sinking or sponginess due to internal seal failure
• Fixes brake fluid leaks from the master cylinder reservoir or outlets
• Restores proper brake fluid pressure for consistent braking performance
• Addresses brake warning light activation related to sensor faults

Installation Notes and Tips

When installing the Dorman M39591 brake master cylinder on a Toyota Celica, ensure the brake fluid reservoir is properly filled and free of contaminants. Bleed the brake system thoroughly to remove air pockets and verify that all connections, including the M10 x 1.0 threaded outlets, are securely tightened. Since mounting hardware is not included, retain original fasteners or source compatible hardware for installation. Verify sensor connections to maintain brake system monitoring functionality.

Quality Assurance and Warranty Information

Dorman manufactures the M39591 brake master cylinder to meet or exceed OEM specifications for Toyota Celica brake hydraulics. The aluminum construction and integrated sensor contribute to reliable operation under normal driving conditions. While specific warranty details are not provided, Dorman products typically come with a limited warranty covering defects in materials and workmanship. Consult product documentation or the manufacturer for exact warranty terms.