Dorman W4358 Drum Brake Wheel Cylinder - Front or Rear

Reliable Drum Brake Wheel Cylinder for Precise Braking

The Dorman W4358 drum brake wheel cylinder is engineered to restore proper brake function in compatible vehicles. Designed with durable cast iron construction and precise bore dimensions, this wheel cylinder ensures consistent hydraulic pressure for safe stopping performance.

• Includes bleeder screw for easy brake system bleeding
• Cast iron casting material for strength and durability
• 1.375 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 W4358 wheel cylinder features a robust cast iron body designed to withstand the rigors of brake hydraulics. Its 1.375 inch bore diameter matches OEM specifications to maintain proper hydraulic pressure within the drum brake system. The included bleeder screw simplifies maintenance by allowing air to be purged from the brake lines, ensuring consistent pedal feel and braking response. The brake line inlet thread size of 7/16-20 (0.437 inch diameter) provides compatibility with standard brake lines used in many domestic and import vehicles.

Compatible Vehicles and Applications

This drum brake wheel cylinder is compatible with a range of vehicles requiring a 1.375 inch bore diameter and 7/16-20 brake line inlet threads. It is commonly used in drum brake systems on various makes and models, including trucks and SUVs that utilize cast iron wheel cylinders. The Dorman W4358 is suitable for restoring braking performance in vehicles experiencing wheel cylinder wear or failure.

Common Issues Addressed by the W4358 Wheel Cylinder

• Brake fluid leaks from worn or damaged wheel cylinders
• Spongy or soft brake pedal due to air in brake lines
• Uneven brake application causing pulling or reduced stopping power
• Corrosion or pitting inside the wheel cylinder bore
• Brake drag caused by sticking pistons within the cylinder

Installation Notes and Tips

When installing the Dorman W4358 drum brake wheel cylinder, ensure the brake system is properly bled using the included bleeder screw to remove air pockets. Verify that the brake line inlet threads match the vehicle’s brake lines to prevent leaks. Inspect brake shoes and hardware for wear during installation and replace as necessary to maintain optimal braking performance.

Quality Assurance and Warranty

Dorman manufactures the W4358 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. While specific warranty details are not provided, Dorman products typically come with a limited warranty covering defects in material and workmanship.