Dorman M630922 Brake Master Cylinder

Reliable Brake Master Cylinder for Nissan Sentra

The Dorman M630922 brake master cylinder is designed specifically for Nissan Sentra models, providing precise hydraulic control for your vehicle's braking system. Engineered with durable cast iron and equipped with a removable reservoir, this master cylinder ensures consistent performance and easy maintenance.

• Compatible with Nissan Sentra brake hydraulics systems
• Master cylinder bore diameter of 0.9375 inches for accurate fluid displacement
• Constructed from cast iron for strength and durability
• Includes a removable reservoir for convenient brake fluid inspection and replacement
• Equipped with a sensor to monitor brake fluid levels
• Two outlets with M12 x 1.0 thread pitch for secure brake line connections
• Package contains the master cylinder unit only; mounting hardware not included

Product Details and Specifications

The Dorman M630922 brake master cylinder features a 0.9375-inch bore diameter, which is critical for maintaining proper hydraulic pressure within the brake system of Nissan Sentra vehicles. Its cast iron construction offers resistance to wear and corrosion, extending the service life of the component. The included removable reservoir simplifies brake fluid maintenance, while the integrated sensor provides real-time monitoring of fluid levels to help prevent brake system failures. The master cylinder has two outlets, both with M12 x 1.0 thread pitch, ensuring compatibility with standard brake lines used in Nissan Sentra models.

Common Applications and Problem Resolution

• Restores proper brake fluid pressure and pedal feel
• Replaces leaking or damaged master cylinders causing brake fluid loss
• Addresses brake warning light activation due to sensor issues
• Fixes spongy or unresponsive brake pedal performance
• Resolves contamination or reservoir damage affecting brake fluid integrity

Installation Notes and Tips

Installation of the Dorman M630922 brake master cylinder requires basic mechanical knowledge and proper tools. Since mounting hardware is not included, retain original fasteners or acquire compatible replacements. Ensure all brake lines are securely connected to the M12 x 1.0 threaded outlets and properly tightened to prevent leaks. After installation, bleed the brake system thoroughly to remove air and verify correct brake pedal operation. The removable reservoir facilitates fluid inspection during and after installation.

Quality Assurance and Warranty

Dorman manufactures the M630922 brake master cylinder to meet or exceed OEM specifications for Nissan Sentra vehicles. The cast iron material and integrated sensor contribute to reliable, long-lasting performance. While specific warranty details should be confirmed at the point of purchase, Dorman typically offers limited warranties covering defects in materials and workmanship to ensure customer confidence in product quality.