Dorman M630643 Brake Master Cylinder

Reliable Brake Master Cylinder for Nissan Sentra

The Dorman M630643 brake master cylinder is designed specifically for Nissan Sentra models, providing precise hydraulic control for your vehicle's braking system. This aluminum master cylinder includes a reservoir and sensor to ensure optimal performance and safety.

• Master cylinder bore diameter: 0.938 inches
• Constructed from durable aluminum material
• Includes reservoir for fluid storage
• Equipped with sensor for brake system monitoring
• Two outlets with rearward outlet size M10 x 1.0 and thread pitch 1.0
• Secondary outlet thread diameter: 10 mm
• Mounting hardware not included

Product Details and Specifications

The Dorman M630643 brake master cylinder is engineered with a 0.938-inch bore diameter to provide consistent hydraulic pressure for the Nissan Sentra's braking system. Its aluminum construction offers corrosion resistance and durability under demanding conditions. The included reservoir allows for proper brake fluid containment, while the integrated sensor supports accurate brake system feedback. Featuring two outlets, including a rearward outlet sized M10 x 1.0 with a 1.0 thread pitch, this master cylinder is designed to meet the exact specifications required for Nissan Sentra brake hydraulics.

Applications and Problem Resolution

This brake master cylinder is compatible with Nissan Sentra vehicles and is intended to address common brake system issues such as:

• Spongy or unresponsive brake pedal feel
• Brake fluid leaks from the master cylinder
• Brake warning light activation due to sensor faults
• Reduced hydraulic pressure affecting braking performance
• Reservoir damage or fluid contamination

Installation Notes and Tips

When installing the Dorman M630643 brake master cylinder on a Nissan Sentra, ensure the following:

• Brake system is properly bled to remove air after installation
• Use compatible brake fluid as specified by the vehicle manufacturer
• Verify sensor connections are secure and functioning
• Inspect brake lines for damage or wear before reassembly
• Mounting hardware must be sourced separately as it is not included

Quality Assurance and Warranty

Dorman manufactures the M630643 brake master cylinder to meet or exceed OEM standards for fit, form, and function. The aluminum construction and integrated sensor contribute to reliable brake system operation. While mounting hardware is not included, the product undergoes quality checks to ensure durability and performance. Warranty details should be confirmed through the point of purchase or Dorman's official resources.