Dorman W3406 Drum Brake Wheel Cylinder - Front

Reliable Drum Brake Wheel Cylinder for Precise Braking

The Dorman W3406 drum brake wheel cylinder is engineered to restore proper brake function in compatible vehicles. Designed with durable cast iron construction and precise dimensions, this wheel cylinder ensures consistent hydraulic pressure for safe and effective braking performance.

• Includes bleeder screw for easy brake system bleeding
• Cast iron casting material for strength and durability
• 1.25 inch bore diameter for accurate fit and function
• Brake line inlet thread diameter of 0.437 inches (7/16-20 thread size)
• Package contains one drum brake wheel cylinder

Durable Construction and Precise Specifications

The Dorman W3406 wheel cylinder features a robust cast iron body designed to withstand the rigors of brake system pressure and heat. Its 1.25 inch bore diameter matches OEM specifications to ensure proper piston movement and hydraulic sealing. The included bleeder screw simplifies maintenance by allowing trapped air to be released from the brake lines, improving brake responsiveness. The brake line inlet thread size of 7/16-20 (0.437 inch diameter) provides compatibility with standard brake fittings, facilitating straightforward installation.

Compatible Vehicles and Applications

This drum brake wheel cylinder is compatible with various vehicle makes and models that require a 1.25 inch bore diameter and 7/16-20 brake line inlet thread. It is commonly used in rear drum brake assemblies on trucks, SUVs, and passenger cars where Dorman parts are specified. The part number W3406 can be referenced to confirm fitment with specific vehicle applications.

• Restores braking pressure in rear drum brake systems
• Addresses brake fluid leaks from worn or damaged cylinders
• Eliminates spongy brake pedal caused by air in brake lines
• Replaces seized or sticking wheel cylinders affecting brake balance
• Improves overall brake system reliability and safety

Installation Notes and Tips

When installing the Dorman W3406 wheel cylinder, ensure the brake system is fully depressurized and the vehicle is securely supported. Use the included bleeder screw to properly bleed the brake lines after installation to remove any trapped air. Verify that the brake line inlet threads match the vehicle’s brake fittings to avoid leaks. Inspect brake shoes and hardware for wear during replacement to maintain optimal braking performance.

Quality Assurance and Warranty

Dorman manufactures the W3406 wheel cylinder to meet or exceed OEM standards for fit, form, and function. The cast iron construction provides long-lasting durability under normal operating conditions. This part is backed by Dorman’s limited warranty, which covers defects in material and workmanship, ensuring confidence in your brake system repair.