HomeBrake > Hardware, Fasteners and FittingsDorman W79985 Drum Brake Wheel Cylinder - Rear
Part #: W79985

Dorman W79985 Drum Brake Wheel Cylinder - Rear

Rear
15 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Ford, Mercury, and American Motors, Pinto, Bobcat, Mustang II, Gremlin, Hornet, Pacer, Javelin, Falcon, Ranchero, Comet, and Cyclone
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Reliable Drum Brake Wheel Cylinder for Ford Bobcat and Mercury Pinto

The Dorman W79985 drum brake wheel cylinder is engineered to restore proper braking function for select Ford and Mercury vehicles. Designed specifically for models like the Ford Bobcat and Mercury Pinto, this component ensures consistent hydraulic pressure within the drum brake system.

Key Features of Dorman W79985 Drum Brake Wheel Cylinder

  • Constructed from durable cast iron for long-lasting performance
  • Includes bleeder screw for easy brake system bleeding
  • Bore diameter of 0.875 inches for precise fitment
  • Brake component inlet thread size of 3/8-24 inches
  • Thread diameter measures 3/8 inch to match OEM specifications
  • Package contains one drum brake wheel cylinder

Detailed Product Description

The Dorman W79985 drum brake wheel cylinder is manufactured from cast iron, providing strength and resistance to wear under demanding braking conditions. Its 0.875-inch bore diameter aligns with original equipment standards, ensuring proper hydraulic pressure and brake shoe movement. The included bleeder screw facilitates straightforward brake fluid bleeding, helping maintain optimal brake performance. Thread sizes of 3/8-24 inches for the inlet and 3/8 inch diameter threads guarantee compatibility with the brake lines and mounting hardware on Ford Bobcat and Mercury Pinto models.

Applications and Common Issues Addressed

  • Restores braking efficiency in Ford Bobcat and Mercury Pinto drum brake systems
  • Replaces leaking or seized wheel cylinders causing brake fluid loss
  • Eliminates uneven brake shoe wear due to faulty hydraulic pressure
  • Resolves spongy or soft brake pedal feel linked to wheel cylinder failure
  • Prevents brake drag caused by sticking pistons within the cylinder

Installation Notes and Tips

When installing the Dorman W79985 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 and fittings before assembly. It is recommended to inspect brake shoes and hardware during installation to confirm overall system integrity. Use appropriate brake fluid and follow manufacturer torque specifications for mounting bolts.

Quality Assurance and Warranty

Dorman manufactures the W79985 wheel cylinder to meet or exceed OEM standards for fit, form, and function. The cast iron construction provides durability under typical operating conditions. While specific warranty details may vary, Dorman products generally include coverage against defects in material and workmanship to support reliable vehicle operation.

BrandDorman
Part NumberW79985
Bleeder Screw Cap IncludedNo
Bleeder Screw IncludedYes
Bore Diameter0.875
Brake Component Inlet Thread Size3/8-24 in
Casting MaterialCast Iron
Package Contents1 Drum Brake Wheel Cylinder
Thread Diameter3/8

This part fits 15 vehicles. Search below:

YearMakeModelPositionNotes
1980FordPintoRearFits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1980MercuryBobcatRearFits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1979FordPintoRearFits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1979MercuryBobcatRearFits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1978FordPintoRearFits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1978MercuryBobcatRearFits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1977FordPintoRearFits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1977MercuryBobcatRearFits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1976FordPintoRearFits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1976MercuryBobcatRearFits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1975FordPintoRearFits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1975MercuryBobcatRearFits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1974FordPintoRearFits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1973FordPintoRearBore: 7/8 In.; Wagon; Front Disc Brakes
1972FordPintoRearBore: 7/8 In.; Wagon; Front Disc Brakes

* 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:

134.6102218E512037029336205463020784-3402279985C0DD2261DF79985J8126710W-81022W906213WC13620

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