Dorman M390001 Brake Master Cylinder

Reliable Brake Master Cylinder for Nissan NX and Sentra

The Dorman M390001 brake master cylinder is engineered to restore proper brake hydraulics in Nissan NX and Sentra models. Designed with precision, this aluminum master cylinder includes a reservoir and sensor to ensure consistent braking performance.

Key Features of the Dorman M390001 Brake Master Cylinder

• Master cylinder bore diameter: 0.875 inches for accurate hydraulic pressure
• 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
• Secondary outlet thread diameter of 10 mm
• Package contains the master cylinder unit (mounting hardware not included)

Detailed Description of the Dorman M390001 Brake Master Cylinder

This brake master cylinder is specifically designed for Nissan NX and Sentra vehicles, providing a precise fit and reliable operation. The 0.875-inch bore diameter ensures proper hydraulic pressure is maintained for effective braking. Made from aluminum, the master cylinder offers durability and resistance to corrosion, extending the service life of the component. The included reservoir allows for adequate brake fluid capacity, while the integrated sensor supports monitoring of brake system conditions. Featuring two outlets with a rearward outlet size of M10 x 1.0 and a thread pitch of 1.0, this master cylinder is compatible with the brake hydraulics system of the specified Nissan models.

Common Issues Addressed by This Brake Master Cylinder

• Brake pedal sinking or sponginess due to master cylinder failure
• Brake fluid leaks from worn or damaged master cylinder seals
• Inconsistent brake pressure affecting stopping performance
• Warning lights triggered by faulty brake fluid level sensor
• Reduced braking efficiency caused by internal component wear

Installation Notes and Tips

• Ensure compatibility with Nissan NX and Sentra models before installation
• Brake system should be properly bled after installation to remove air
• Mounting hardware is not included; reuse existing hardware or source separately
• Handle brake fluid carefully to avoid contamination and damage to painted surfaces
• Verify sensor connections are secure to maintain brake system monitoring

Quality Assurance and Warranty Information

Dorman manufactures this brake master cylinder to meet or exceed OEM specifications for Nissan NX and Sentra vehicles. The aluminum construction and integrated sensor contribute to reliable brake system performance. While mounting hardware is not included, the product undergoes quality checks to ensure fit and function. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.