Dorman W134494 Drum Brake Wheel Cylinder - Rear

Reliable Drum Brake Wheel Cylinder for Mercury Quest and Nissan Villager

The Dorman W134494 drum brake wheel cylinder is engineered to restore proper braking function for select Mercury and Nissan vehicles. Designed with durable cast iron and precise dimensions, this component ensures consistent hydraulic pressure in your drum brake system.

• Includes bleeder screw for easy brake fluid bleeding
• Cast iron construction for strength and durability
• Brake line inlet thread diameter of 10 mm with M10 x 1.0 thread size
• 1-inch bore diameter for accurate fit and performance
• Thread pitch of 1.0 for secure connections
• Package contains one drum brake wheel cylinder

Detailed Product Description

The Dorman W134494 drum brake wheel cylinder is specifically designed for compatibility with Mercury Quest and Nissan Villager models. Its cast iron casting material provides reliable resistance to wear and corrosion, essential for maintaining brake system integrity. The included bleeder screw simplifies the brake bleeding process, although a bleeder screw cap is not included. With a 1-inch bore diameter and a brake line inlet thread diameter of 10 mm (M10 x 1.0 thread size), this wheel cylinder fits precisely within the brake hydraulics system to ensure proper brake fluid pressure and wheel braking force.

Common Applications and Issues Addressed

• Restores braking performance in vehicles with leaking or seized wheel cylinders
• Eliminates brake fluid leaks at the wheel cylinder
• Resolves uneven brake application or dragging brakes
• Prevents brake pedal sinking due to hydraulic failure
• Addresses corrosion-related brake component failure

Installation Notes and Tips

• Ensure compatibility with Mercury Quest or Nissan Villager before installation
• Use proper tools to avoid damaging the bleeder screw during installation
• Bleed the brake system thoroughly after installation to remove air
• Inspect brake shoes and hardware for wear while replacing the wheel cylinder
• Follow manufacturer torque specifications for brake line fittings

Quality Assurance and Warranty

Dorman manufactures the W134494 drum brake wheel cylinder to meet or exceed OEM standards for fit, form, and function. The cast iron construction and precise machining contribute to long service life. This part is backed by Dorman's limited warranty, providing coverage against defects in material and workmanship under normal use.