Dorman M390317 Brake Master Cylinder

Reliable Brake Master Cylinder for Nissan 200SX and Sentra

The Dorman M390317 brake master cylinder is designed specifically for Nissan 200SX and Sentra models, providing precise hydraulic control for your vehicle's braking system. Engineered with durable aluminum and including a reservoir, this master cylinder ensures consistent brake performance.

Key Features of the Dorman M390317 Brake Master Cylinder

• Master cylinder bore diameter: 0.813 inches for accurate hydraulic pressure
• Constructed from lightweight, corrosion-resistant aluminum material
• Includes reservoir for brake fluid storage and management
• Four outlet ports with rearward outlet size M10 x 1.0 and 10mm secondary outlet thread diameter
• Thread pitch of 1.0 for secure and precise fitting
• Package contains the master cylinder unit only; mounting hardware not included
• Compatible with Nissan 200SX and Sentra models

Detailed Product Description

The Dorman M390317 brake master cylinder is a critical component in the brake hydraulics system of Nissan 200SX and Sentra vehicles. Its 0.813-inch bore diameter is designed to deliver consistent hydraulic pressure to the brake calipers and wheel cylinders, ensuring reliable stopping power. Made from aluminum, this master cylinder offers resistance to corrosion and heat, contributing to long-term durability. The included reservoir allows for proper brake fluid containment and circulation, which is essential for maintaining brake system integrity. With four outlets and a rearward outlet size of M10 x 1.0, this master cylinder supports efficient brake line connections. The 1.0 thread pitch ensures a secure fit during installation.

Common Applications and Issues Addressed

• Restores proper brake fluid pressure in Nissan 200SX and Sentra brake systems
• Replaces worn or leaking master cylinders causing brake pedal sponginess
• Solves brake fluid reservoir leaks or contamination issues
• Addresses inconsistent braking performance due to master cylinder failure
• Supports brake system rebuilds requiring OEM-compatible master cylinder replacement

Installation Notes and Tips

• Ensure brake system is fully depressurized before removal of the old master cylinder
• Bleed the brake system thoroughly after installation to remove air pockets
• Use compatible brake fluid as specified by Nissan for 200SX and Sentra models
• Verify thread pitch and outlet sizes match existing brake lines for proper fit
• Mounting hardware is not included; retain or source necessary bolts and fittings separately

Quality Assurance and Warranty Information

Dorman manufactures the M390317 brake master cylinder to meet or exceed OEM specifications for Nissan 200SX and Sentra vehicles. The aluminum construction and precise machining 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.