Dorman M90547 Brake Master Cylinder

Overview of Dorman Brake Master Cylinder M90547

The Dorman Brake Master Cylinder M90547 is designed specifically for Volkswagen Beetle models, providing reliable brake hydraulics performance. Crafted from durable cast iron, this master cylinder ensures consistent braking pressure and long-lasting operation.

• Master cylinder bore diameter: 0.688 inches
• Constructed from cast iron for durability
• Includes three outlets for brake line connections
• Secondary outlet thread diameter: 10 mm with 1.0 thread pitch
• Does not include mounting hardware or reservoir
• Sensor not included

Detailed Product Description

The Dorman M90547 brake master cylinder is engineered to meet the specific hydraulic requirements of Volkswagen Beetle vehicles. Its cast iron construction offers strength and resistance to wear, while the 0.688-inch bore diameter is calibrated to provide optimal brake fluid pressure. Featuring three outlets, this master cylinder supports multiple brake line connections, with a secondary outlet thread diameter of 10 mm and a 1.0 thread pitch to ensure proper fitment. Note that this unit does not come with a reservoir or mounting hardware, so those components must be sourced separately.

Common Applications and Problem Resolution

• Restores proper brake fluid pressure in Volkswagen Beetle brake systems
• Replaces worn or leaking master cylinders causing brake pedal sponginess
• Addresses brake fluid leaks from damaged or corroded master cylinders
• Improves brake system responsiveness and safety
• Suitable for Beetle models requiring a 0.688-inch bore diameter master cylinder

Installation Notes and Tips

• Ensure compatibility with Volkswagen Beetle model year before installation
• Brake fluid reservoir and mounting hardware must be installed separately
• Bleed brake system thoroughly after installation to remove air
• Use proper thread sealant on outlet fittings to prevent leaks
• Follow manufacturer torque specifications for mounting bolts

Quality Assurance and Warranty

Dorman manufactures the M90547 brake master cylinder to meet or exceed OEM standards for fit and function. The cast iron material provides durability under normal operating conditions. While mounting hardware and sensors are not included, the master cylinder is designed for straightforward integration into Volkswagen Beetle brake systems. Warranty coverage details should be confirmed at the point of purchase.