Dorman M630854 Brake Master Cylinder

Reliable Brake Master Cylinder for Dodge Durango and Jeep Grand Cherokee

The Dorman M630854 Brake Master Cylinder is engineered to restore proper brake hydraulics in your Dodge Durango or Jeep Grand Cherokee. Designed with precision, this master cylinder includes a removable reservoir and sensor to ensure optimal brake system performance.

• Master cylinder bore diameter: 1.063 inches for accurate hydraulic pressure
• Constructed from durable aluminum material for corrosion resistance
• Includes a removable reservoir for easy maintenance and fluid replacement
• Equipped with a sensor to monitor brake fluid levels
• Two outlets with rearward outlet size M14 x 1.5 and secondary outlet thread diameter 14 mm
• Thread pitch of 1.5 for secure and proper fitment
• Compatible with Dodge Durango and Jeep Grand Cherokee models

Product Details and Specifications

The Dorman M630854 brake master cylinder is designed specifically for brake hydraulics systems in Dodge Durango and Jeep Grand Cherokee vehicles. Its aluminum construction provides strength and resistance to corrosion, extending the life of the part. The 1.063-inch bore diameter ensures consistent hydraulic pressure for reliable braking performance. This master cylinder comes with a removable reservoir, making brake fluid inspection and replacement straightforward. Additionally, the included sensor helps monitor fluid levels to maintain safe braking conditions. The unit features two outlets, including a rearward outlet sized M14 x 1.5 and a secondary outlet with a 14 mm thread diameter, both with a 1.5 thread pitch to ensure proper connection to your vehicle’s brake lines.

Common Applications and Problem Resolution

• Restores brake pressure loss due to worn or damaged master cylinder
• Eliminates brake fluid leaks from cracked or corroded reservoirs
• Resolves brake warning light issues related to faulty fluid level sensors
• Improves brake pedal feel and responsiveness in Dodge Durango and Jeep Grand Cherokee
• Addresses uneven braking caused by internal master cylinder wear

Installation Notes and Tips

Installation of the Dorman M630854 master cylinder requires basic brake system knowledge and tools. Before installation, ensure the brake system is fully depressurized and the vehicle is securely lifted. Bleed the brake system thoroughly after installation to remove air and restore proper hydraulic function. The removable reservoir simplifies fluid replacement during installation. Note that mounting hardware is not included, so retain original hardware or source compatible fasteners. Verify thread pitch and outlet sizes to ensure proper brake line connections.

Quality Assurance and Warranty Information

Dorman manufactures the M630854 brake master cylinder to meet or exceed OEM specifications for Dodge Durango and Jeep Grand Cherokee vehicles. The aluminum construction and integrated sensor contribute to long-term reliability. This part is backed by Dorman’s limited warranty, providing coverage against defects in material and workmanship under normal use. Refer to Dorman’s warranty policy for specific terms and conditions.