Dorman W37158 Drum Brake Wheel Cylinder - Rear Lower

Reliable Drum Brake Wheel Cylinder for Precise Braking

The Dorman W37158 drum brake wheel cylinder is engineered to restore proper brake function in compatible vehicles. Designed with durable cast iron construction and a 1.5-inch bore diameter, this component ensures consistent hydraulic pressure for safe stopping performance.

• Cast iron casting material for strength and durability
• 1.5-inch bore diameter for accurate hydraulic operation
• Brake line inlet thread diameter of 0.437 inches (7/16-24 thread size)
• Includes one drum brake wheel cylinder per package
• No bleeder screw or bleeder screw cap included

Durable Construction and Precise Specifications

The Dorman W37158 wheel cylinder features a robust cast iron body designed to withstand the rigors of brake system pressure and heat. Its 1.5-inch bore diameter is calibrated to provide the correct hydraulic force needed to engage the brake shoes effectively. The brake line inlet thread size of 7/16-24 (0.437 inches) ensures compatibility with standard brake lines, facilitating a secure and leak-free connection. This part is ideal for vehicles requiring a reliable replacement drum brake wheel cylinder that meets OEM specifications.

Compatible Vehicles and Common Applications

This drum brake wheel cylinder is compatible with various makes and models that utilize a 1.5-inch bore diameter and 7/16-24 brake line inlet thread size. It is commonly used in rear drum brake assemblies on trucks, SUVs, and passenger vehicles where Dorman parts are specified. The W37158 part number is often sought for restoring braking performance in vehicles experiencing hydraulic brake issues.

• Restores proper hydraulic pressure in drum brake systems
• Eliminates brake drag or uneven braking caused by worn cylinders
• Addresses brake fluid leaks from damaged or corroded wheel cylinders
• Improves brake pedal feel and responsiveness
• Prevents brake failure due to cylinder bore wear or corrosion

Installation Notes and Tips

When installing the Dorman W37158 drum brake wheel cylinder, ensure the brake system is fully depressurized and the vehicle is securely supported. Clean the brake backing plate and inspect brake shoes for wear before assembly. Since this part does not include a bleeder screw or cap, use the existing hardware or source compatible components as needed. Properly bleed the brake system after installation to remove air and verify hydraulic integrity.

Quality Assurance and Warranty

Dorman manufactures the W37158 wheel cylinder to meet or exceed industry standards for brake hydraulics. The cast iron construction and precise machining contribute to long service life and reliable performance. While specific warranty details are not provided, Dorman products typically come with a limited warranty covering defects in materials and workmanship.