Dorman M390319 Brake Master Cylinder

Reliable Brake Master Cylinder for Nissan 200SX and Sentra

The Dorman M390319 brake master cylinder is designed specifically for Nissan 200SX and Sentra models, providing precise hydraulic control for your vehicle's braking system. This master cylinder features an aluminum construction and includes a reservoir and sensor for efficient brake fluid management.

• Master cylinder bore diameter: 0.875 inches for accurate hydraulic pressure
• Durable aluminum material for corrosion resistance and longevity
• 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
• Mounting hardware not included

Product Details and Specifications

The Dorman M390319 brake master cylinder is engineered to meet the hydraulic requirements of Nissan 200SX and Sentra vehicles. Its 0.875-inch bore diameter ensures proper fluid displacement for consistent brake pedal feel. Constructed from aluminum, this master cylinder offers resistance to corrosion and heat, contributing to reliable braking performance over time. The included reservoir allows for adequate brake fluid capacity, while the integrated sensor provides real-time monitoring of brake fluid levels or pressure, depending on the vehicle's system design. The unit features two outlets, including a rearward outlet sized M10 x 1.0 with a 1.0 thread pitch, and a secondary outlet with a 10 mm thread diameter, ensuring compatibility with the vehicle's brake lines.

Common Applications and Problem Resolution

• Restores proper brake fluid pressure and pedal feel in Nissan 200SX and Sentra
• Replaces leaking or damaged master cylinders causing brake fluid loss
• Addresses brake warning light issues related to sensor failure
• Solves inconsistent braking performance due to worn internal components
• Eliminates spongy or soft brake pedal sensations

Installation Notes and Tips

• Ensure compatibility with Nissan 200SX and Sentra models before installation
• Bleed the brake system thoroughly after installation to remove air
• Use appropriate brake fluid as specified by the vehicle manufacturer
• Check all connections for leaks, especially at the M10 x 1.0 rearward outlet
• Mounting hardware is not included; reuse existing hardware or source separately

Quality Assurance and Warranty

Dorman manufactures the M390319 brake master cylinder to meet or exceed OEM standards for fit, form, and function. The aluminum construction and integrated sensor contribute to reliable operation within the brake hydraulics system. While mounting hardware is not included, the product is backed by Dorman's quality control processes. Please refer to Dorman's official warranty policy for specific coverage details.