HomeBrake > Hardware, Fasteners and FittingsDorman W37578 Drum Brake Wheel Cylinder - Rear Left
Part #: W37578

Dorman W37578 Drum Brake Wheel Cylinder - Rear Left

Rear Left
⚙️ 9 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Toyota, Land Cruiser
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Reliable Drum Brake Wheel Cylinder for Toyota Land Cruiser

The Dorman W37578 drum brake wheel cylinder is engineered to restore proper braking function for Toyota Land Cruiser models. Designed with durable cast iron construction and precise specifications, this wheel cylinder ensures consistent hydraulic pressure and reliable brake performance.

Key Features of Dorman W37578 Drum Brake Wheel Cylinder

  • Includes bleeder screw for easy brake system bleeding
  • Brake line inlet thread diameter: 10 mm
  • Brake component inlet thread size: M10 x 1.0 with 1.0 thread pitch
  • Cast iron casting material for strength and durability
  • Bore diameter of 0.875 inches for accurate fitment
  • Package contains one drum brake wheel cylinder

Detailed Product Description

The Dorman W37578 is a drum brake wheel cylinder specifically designed for Toyota Land Cruiser vehicles. Its cast iron construction provides the necessary strength to withstand the hydraulic pressure within the brake system. The bore diameter of 0.875 inches ensures proper piston movement, while the included bleeder screw facilitates efficient removal of air from the brake lines. The brake line inlet thread diameter of 10 mm and M10 x 1.0 thread size with a 1.0 pitch guarantee compatibility with the vehicle's brake hydraulics. This part is engineered to meet OEM specifications, providing a reliable replacement for worn or leaking wheel cylinders.

Common Issues Addressed by This Wheel Cylinder

  • Brake fluid leaks from the wheel cylinder
  • Reduced braking efficiency due to worn or seized pistons
  • Spongy brake pedal caused by air in the brake lines
  • Uneven brake shoe wear resulting from inconsistent hydraulic pressure
  • Brake drag or sticking caused by faulty wheel cylinder operation

Installation Notes and Tips

When installing the Dorman W37578 drum brake wheel cylinder on a Toyota Land Cruiser, ensure the brake system is properly bled to remove any trapped air. Verify that the brake line inlet threads match the M10 x 1.0 specification to avoid leaks. Inspect brake shoes and hardware for wear and replace as necessary to maintain optimal braking performance. Use appropriate brake fluid and follow manufacturer torque specifications during installation.

Quality Assurance and Warranty

Dorman manufactures the W37578 wheel cylinder to meet or exceed OEM standards, using cast iron for durability and long service life. The product includes a bleeder screw for maintenance convenience. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in materials and workmanship to ensure customer confidence in the product.

BrandDorman
Part NumberW37578
Bleeder Screw Cap IncludedNo
Bleeder Screw IncludedYes
Bore Diameter0.875
Brake Component Inlet Thread SizeM10 X 1.0
Brake Line Inlet Thread Diameter10
Casting MaterialCast Iron
Package Contents1 Drum Brake Wheel Cylinder
Thread Pitch1.0

This part fits 9 vehicles. Search below:

YearMakeModelPositionNotes
1980ToyotaLand CruiserRear LeftFits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1979ToyotaLand CruiserRear LeftFits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1978ToyotaLand CruiserRear LeftFits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1977ToyotaLand CruiserRear LeftFits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1976ToyotaLand CruiserRear LeftFits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1975ToyotaLand CruiserRear LeftFits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1974ToyotaLand CruiserRear LeftFits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1973ToyotaLand CruiserRear LeftFits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1972ToyotaLand CruiserRear LeftFits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

072-8380134.4471918E20234175475706906584-20009W-57009W906521WC257270WC37578

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.