HomeBrake > Hardware, Fasteners and FittingsDorman W40951 Drum Brake Wheel Cylinder - Front Left or Front Right
Part #: W40951

Dorman W40951 Drum Brake Wheel Cylinder - Front Left or Front Right

Front Left
⚙️ 38 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Jeep, Ford, Mercury, and Dodge, CJ5, CJ7, P-350, Maverick, CJ6, Comet, Mustang, Cougar, W100 Pickup, Ranchero, Torino, Cyclone, Montego, Fairlane, Falcon, and Falcon Sedan Delivery
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Reliable Drum Brake Wheel Cylinder for Ford, Jeep, and Mercury

The Dorman W40951 drum brake wheel cylinder is engineered to restore proper braking function in select Ford, Jeep, and Mercury vehicles. Designed with durable cast iron and precise dimensions, this component ensures consistent hydraulic pressure for safe stopping performance.

  • Includes bleeder screw for easy brake system bleeding
  • Constructed from cast iron for strength and durability
  • 1.125 inch bore diameter for accurate fit and function
  • Brake component inlet thread size of 3/8-24 inches
  • Thread diameter of 3/8 inch for secure installation
  • Package contains one drum brake wheel cylinder

Durable Construction and Precise Specifications

The Dorman W40951 wheel cylinder features a cast iron casting material that provides long-lasting resistance to wear and corrosion. Its 1.125 inch bore diameter is designed to match original equipment specifications, ensuring proper hydraulic pressure within the drum brake system. The included bleeder screw simplifies maintenance by allowing trapped air to be released, which is critical for maintaining brake responsiveness. The 3/8-24 inch brake component inlet thread size and 3/8 inch thread diameter provide compatibility with factory brake lines and fittings.

Compatible Vehicles and Applications

This drum brake wheel cylinder is compatible with various Ford, Jeep, and Mercury models, including the Jeep CJ5 and CJ7, Ford Mustang, Mercury Cougar, and Mercury Montego. The part number W40951 is specifically designed to meet the braking system requirements of these vehicles, making it a suitable replacement for worn or leaking wheel cylinders in drum brake assemblies.

Common Issues Addressed by This Wheel Cylinder

  • Brake fluid leaks from worn or damaged wheel cylinders
  • Reduced braking efficiency due to loss of hydraulic pressure
  • Spongy or soft brake pedal feel caused by air in brake lines
  • Uneven brake shoe wear resulting from malfunctioning wheel cylinders
  • Brake drag or sticking caused by seized cylinder pistons

Installation Notes and Tips

When installing the Dorman W40951 drum brake wheel cylinder, ensure the brake system is properly bled using the included bleeder screw to remove any air pockets. Verify that the brake lines and fittings match the 3/8-24 inch inlet thread size and 3/8 inch thread diameter for a secure connection. Inspect brake shoes and hardware for wear and replace as necessary to maintain optimal braking performance. Follow vehicle-specific service manual instructions for torque specifications and safety precautions.

Quality Assurance and Warranty Information

Dorman manufactures the W40951 wheel cylinder to meet or exceed OEM standards for fit, form, and function. The cast iron construction and precise machining contribute to reliable performance and durability. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in material and workmanship. Refer to the product packaging or Dorman’s official documentation for exact warranty terms.

BrandDorman
Part NumberW40951
Bleeder Screw Cap IncludedNo
Bleeder Screw IncludedYes
Bore Diameter1.125
Brake Component Inlet Thread Size3/8-24 in
Casting MaterialCast Iron
Package Contents1 Drum Brake Wheel Cylinder
Thread Diameter3/8

This part fits 38 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1977JeepCJ5Front LeftCompatible with drum brake systems with a 1.125" bore size.
1977JeepCJ7Front LeftCompatible with drum brake systems with a 1.125" bore size.
1976JeepCJ5Front LeftCompatible with drum brake systems with a 1.125" bore size.
1976JeepCJ7Front LeftCompatible with drum brake systems with a 1.125" bore size.
1975JeepCJ5Front LeftCompatible with drum brake systems with a 1.125" bore size.
1974JeepCJ5Front LeftCompatible with drum brake systems with a 1.125" bore size.
1973FordMustangFront LeftCompatible with drum brake systems with a 1.125" bore size.
1972FordMustangFront LeftCompatible with drum brake systems with a 1.125" bore size.
1972MercuryCougarFront LeftCompatible with drum brake systems with a 1.125" bore size.
1971FordMustangFront LeftCompatible with drum brake systems with a 1.125" bore size.
1971MercuryCougarFront LeftCompatible with drum brake systems with a 1.125" bore size.
1971MercuryMontegoFront LeftCompatible with drum brake systems with a 1.125" bore size.
1970FordMustang4.1LL6Front LeftCompatible with drum brake systems with a 1.125" bore size.
1970FordMustang5.0LV8Front LeftCompatible with drum brake systems with a 1.125" bore size.
1970FordMustangFront LeftCompatible with drum brake systems with a 1.125" bore size.
1970MercuryCougarFront LeftCompatible with drum brake systems with a 1.125" bore size.
1970MercuryMontegoFront LeftCompatible with drum brake systems with a 1.125" bore size.
1969FordMustang4.1LL6Front LeftCompatible with drum brake systems with a 1.125" bore size.
1969FordMustang5.0LV8Front LeftCompatible with drum brake systems with a 1.125" bore size.
1969FordMustangFront LeftCompatible with drum brake systems with a 1.125" bore size.
1969MercuryMontego4.1LL6Front LeftBore: 1.125 In.; Sedan; Coupe
1969MercuryMontego5.0LV8Front LeftBore: 1.125 In.; Sedan; Coupe
1969MercuryMontegoFront LeftBore: 1.125 In.; Sedan; Coupe
1968FordMustang5.0LV8Front LeftCompatible with drum brake systems with a 1.125" bore size.
1968FordMustang4.7LV8Front LeftCompatible with drum brake systems with a 1.125" bore size.
1968FordMustang7.0LV8Front LeftCompatible with drum brake systems with a 1.125" bore size.
1968MercuryMontego7.0LV8Front LeftCompatible with drum brake systems with a 1.125" bore size.
1968MercuryMontego5.0LV8Front LeftCompatible with drum brake systems with a 1.125" bore size.
1968MercuryMontegoFront LeftCompatible with drum brake systems with a 1.125" bore size.
1968MercuryMontego3.3LL6Front LeftCompatible with drum brake systems with a 1.125" bore size.
1968MercuryMontego4.7LV8Front LeftCompatible with drum brake systems with a 1.125" bore size.
1967FordMustang4.7LV8Front LeftCompatible with drum brake systems with a 1.125" bore size.
1967FordMustang7.0LV8Front LeftCompatible with drum brake systems with a 1.125" bore size.
1966FordMustang4.7LV8Front LeftCompatible with drum brake systems with a 1.125" bore size.
1965FordMustang4.3LV8Front LeftCompatible with drum brake systems with a 1.125" bore size.
1965FordMustang4.7LV8Front LeftCompatible with drum brake systems with a 1.125" bore size.
1964FordMustang4.3LV8Front LeftCompatible with drum brake systems with a 1.125" bore size.
1964FordMustang4.7LV8Front LeftCompatible with drum brake systems with a 1.125" 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:

134.6101618E332036017262067429539943361440951784-34016AD2062AF40951W-81016W906172WC13614

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