HomeBrake > Brake HydraulicsDorman W37648 Drum Brake Wheel Cylinder - Rear Left
Part #: W37648

Dorman W37648 Drum Brake Wheel Cylinder - Rear Left

Rear Left
⚙️ 6 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Ford, Bronco, E-100 Econoline, and Ranger
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Reliable Drum Brake Wheel Cylinder for Ford Vehicles

The Dorman W37648 drum brake wheel cylinder is engineered to restore proper braking function in select Ford models. Designed with durable cast iron and precise dimensions, this wheel cylinder ensures consistent hydraulic pressure for safe stopping performance.

  • Includes bleeder screw for easy brake bleeding
  • Cast iron construction for strength and durability
  • Brake line inlet thread diameter: 10 mm
  • Brake component inlet thread size: M10 x 1.0 with 1.0 thread pitch
  • Bore diameter of 0.813 inches for accurate fitment
  • Package contains one drum brake wheel cylinder

Product Details and Specifications

The Dorman W37648 wheel cylinder is specifically designed for use in Ford Bronco, E-100 Econoline, and Ranger models. Its cast iron casting material provides reliable resistance to wear and corrosion, essential for brake hydraulics exposed to harsh conditions. The bore diameter of 0.813 inches matches OEM specifications to maintain proper piston movement and hydraulic pressure. The included bleeder screw simplifies brake system maintenance by allowing trapped air to be released efficiently. The brake line inlet thread diameter of 10 mm and M10 x 1.0 thread size with a 1.0 pitch ensure compatibility with factory brake lines.

Compatible Vehicles and Applications

  • Ford Bronco drum brake hydraulic repairs
  • Ford E-100 Econoline brake system maintenance
  • Ford Ranger rear drum brake wheel cylinder replacement
  • Resolving brake fluid leaks or wheel cylinder failure
  • Addressing uneven brake pedal feel or reduced braking power

Installation Notes and Tips

When installing the Dorman W37648 drum brake wheel cylinder, ensure the brake system is properly bled using the included bleeder screw to remove air pockets. Verify thread compatibility with existing brake lines using the M10 x 1.0 inlet thread size. Inspect brake shoes and drums for wear during replacement to maintain optimal braking performance. Use appropriate brake fluid and follow manufacturer torque specifications for all fittings.

Quality Assurance and Warranty

Dorman manufactures the W37648 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. While specific warranty details are not provided here, Dorman products typically come with a limited warranty against defects in material and workmanship.

BrandDorman
Part NumberW37648
Bleeder Screw IncludedYes
Brake Line Inlet Thread Diameter10
Bleeder Screw Cap IncludedNo
Casting MaterialCast iron
Bore Diameter0.813
Brake Component Inlet Thread SizeM10 x 1.0
Package Contents1 drum brake wheel cylinder
Thread Pitch1.0

This part fits 6 vehicles. Search below:

YearMakeModelPositionNotes
1986FordRangerRear LeftFits 10 inch brake systems with a bore size of 13/16 inches.
1985FordRangerRear LeftFits 10 inch brake systems with a bore size of 13/16 inches.
1984FordRangerRear LeftFits 10 inch brake systems with a bore size of 13/16 inches.
1975FordBroncoRear LeftFitment: Drum Brake Wheel Cylinder with a 13/16 In. bore suitable for a 2,900 Lb. Axle.
1974FordBroncoRear LeftFitment: Drum Brake Wheel Cylinder with a 13/16 In. bore suitable for a 2,900 Lb. Axle.
1974FordE-100 EconolineRear LeftCompatible with drum brake wheel cylinders with a 13/16 inch bore size.

* 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:

134.6500818E2432037648337528018684-42008D4TZ2262AF80186W-85008W906562WC13752

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