Dorman M390118 Brake Master Cylinder

Reliable Brake Master Cylinder for Nissan D21 Pickup

The Dorman M390118 brake master cylinder is designed specifically for Nissan D21 and Pickup models, providing precise hydraulic control for your vehicle's braking system. Engineered with durable aluminum and equipped with a reservoir and sensor, this master cylinder ensures consistent brake performance.

• Master cylinder bore diameter: 1 inch for accurate hydraulic pressure
• Constructed from lightweight, corrosion-resistant aluminum
• Includes reservoir for brake fluid storage
• Equipped with a sensor for brake system monitoring
• Three outlets with rearward outlet size M10 x 1.0 and 10mm secondary outlet thread diameter
• Thread pitch of 1.0 for secure fitting
• Mounting hardware not included

Product Details and Specifications

The Dorman M390118 brake master cylinder is crafted from aluminum, offering a balance of strength and corrosion resistance essential for brake hydraulics. Its 1-inch bore diameter supports effective brake fluid pressure, while the included reservoir maintains fluid levels to prevent air intrusion. The master cylinder features three outlets, including a rearward outlet sized M10 x 1.0 and a secondary outlet with a 10mm thread diameter, ensuring compatibility with the Nissan D21 and Pickup brake systems. Additionally, the integrated sensor allows for real-time brake system feedback, enhancing safety and diagnostics.

Compatible Nissan Models and Applications

This brake master cylinder is compatible with Nissan D21 and Pickup models, making it a suitable replacement part for maintaining or restoring brake system functionality. The part number M390118 corresponds directly to these vehicles, ensuring proper fitment and performance.

• Restores brake hydraulic pressure for improved stopping power
• Replaces worn or leaking master cylinders causing brake fluid loss
• Addresses brake warning light issues related to sensor failure
• Prevents air in brake lines for consistent pedal feel
• Supports brake system reliability in Nissan D21 and Pickup trucks

Installation Notes and Tips

Installation of the Dorman M390118 brake master cylinder requires careful attention to brake fluid handling and bleeding procedures. Since mounting hardware is not included, retain original hardware or source compatible fasteners. Ensure all connections, including the three outlets and sensor wiring, are securely attached and free of leaks. Properly bleed the brake system after installation to remove air and verify pedal firmness before driving.

Quality Assurance and Warranty

Dorman manufactures this brake master cylinder to meet or exceed OEM standards for fit, form, and function. The aluminum construction and integrated sensor contribute to long-term durability and reliable brake system operation. While specific warranty details are not provided here, Dorman typically offers limited warranties on their brake hydraulics products to cover defects in materials and workmanship.