Dorman W90549 Drum Brake Wheel Cylinder - Front

Overview of Dorman Drum Brake Wheel Cylinder W90549

The Dorman W90549 drum brake wheel cylinder is engineered for reliable brake hydraulics performance on Volkswagen Beetle models. Designed with precision, this component ensures consistent braking pressure and smooth operation for your vehicle's drum brake system.

• Includes bleeder screw for easy brake fluid bleeding
• Constructed from durable cast iron for long-lasting strength
• Bore diameter of 0.875 inches for accurate fitment
• Brake line inlet thread diameter of 10 mm with M10 x 1.0 thread size and 1.0 thread pitch
• Package contains one drum brake wheel cylinder

Detailed Product Description

The Dorman W90549 drum brake wheel cylinder is specifically designed to meet the brake hydraulics requirements of Volkswagen Beetle vehicles. Made from cast iron, this wheel cylinder offers durability and resistance to wear under demanding braking conditions. The bore diameter of 0.875 inches ensures proper piston movement within the cylinder, maintaining effective hydraulic pressure. The included bleeder screw simplifies the brake bleeding process, although the bleeder screw cap is not included. The brake line inlet thread diameter measures 10 mm, with a thread size of M10 x 1.0 and a thread pitch of 1.0, providing compatibility with the corresponding brake lines on the Beetle.

Applications and Problem Solving

This drum brake wheel cylinder is used to convert hydraulic pressure from the brake system into mechanical force to push the brake shoes against the drum. It is compatible with Volkswagen Beetle models requiring this specific part number W90549. Common issues addressed by replacing this component include:

• Leaking brake fluid from worn or damaged wheel cylinders
• Reduced braking efficiency due to piston sticking or corrosion
• Uneven brake shoe wear caused by inconsistent cylinder operation
• Brake pedal softness or sponginess related to hydraulic leaks
• Brake noise or dragging resulting from malfunctioning wheel cylinders

Installation Notes and Tips

When installing the Dorman W90549 wheel cylinder, ensure the brake system is properly bled using the included bleeder screw to remove air and maintain hydraulic integrity. Verify thread compatibility with the brake line inlet (M10 x 1.0) before installation. Inspect brake shoes and drums for wear and replace if necessary to ensure optimal braking performance. Use appropriate brake fluid and follow manufacturer torque specifications for all fittings.

Quality Assurance and Warranty

Dorman manufactures this drum brake wheel cylinder to meet or exceed OEM specifications for Volkswagen Beetle brake hydraulics. The cast iron construction provides durability and resistance to corrosion. While specific warranty details are not provided here, Dorman typically offers limited warranties on their brake components to cover defects in materials and workmanship.