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Dorman W37985 Drum Brake Wheel Cylinder - RearOE Quality 60-Day Returns
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Part #: W37985

Dorman W37985 Drum Brake Wheel Cylinder - Rear

Rear
⚙️ 49 vehicles fit this part
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🚗Fitment: Chevrolet, GMC, Cadillac, and Dodge, Express 1500, Express 2500, Savana 1500, Savana 2500, DeVille, Ram 1500, and Ram 2500
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Reliable Drum Brake Wheel Cylinder for Select GM and Dodge Models

The Dorman W37985 drum brake wheel cylinder is engineered to restore proper brake hydraulics on compatible vehicles. Designed with durable cast iron and precise bore diameter, this component ensures consistent braking performance for Cadillac DeVille, Chevrolet Express 1500/2500, Dodge Ram 1500/2500, and GMC Savana 1500/2500 models.

Key Features of the Dorman W37985 Wheel Cylinder

  • Constructed from cast iron for strength and durability
  • Includes bleeder screw for easy brake fluid bleeding
  • Bore diameter of 0.938 inches 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

Detailed Product Description

The Dorman W37985 drum brake wheel cylinder is a critical component in the brake hydraulics system, responsible for applying pressure to the brake shoes within drum brakes. Manufactured from cast iron, this wheel cylinder offers reliable resistance to wear and corrosion. The included bleeder screw simplifies maintenance by allowing trapped air to be released from the brake lines, ensuring optimal hydraulic pressure. With a bore diameter of 0.938 inches and a brake component inlet thread size of 3/8-24 inches, this part is designed to meet exact OEM specifications for a secure and precise fit on Cadillac DeVille, Chevrolet Express 1500 and 2500, Dodge Ram 1500 and 2500, and GMC Savana 1500 and 2500 vehicles.

Common Applications and Issues Addressed

  • Restores braking performance on vehicles with leaking or seized wheel cylinders
  • Eliminates brake fluid leaks that cause reduced hydraulic pressure
  • Resolves uneven brake shoe wear due to malfunctioning wheel cylinders
  • Prevents brake drag caused by sticking pistons within the cylinder
  • Improves overall brake system responsiveness and safety

Installation Notes and Tips

  • Ensure the brake system is fully depressurized before removal
  • Use the included bleeder screw to properly bleed air from the brake lines after installation
  • Inspect brake shoes and drums for wear and replace if necessary during installation
  • Verify thread compatibility with brake lines using the 3/8-24 inch inlet thread size
  • Follow vehicle-specific service manual instructions for torque specifications and procedures

Quality Assurance and Warranty Information

Dorman manufactures the W37985 wheel cylinder to meet or exceed OEM standards for fit, form, and function. The cast iron construction provides durability under typical operating conditions. This part includes a bleeder screw for maintenance convenience. While specific warranty details may vary, Dorman generally offers limited warranties covering defects in material and workmanship. Refer to Dorman’s official documentation for exact warranty terms.

BrandDorman
Part NumberW37985
Bleeder Screw Cap IncludedNo
Bleeder Screw IncludedYes
Bore Diameter0.938
Brake Component Inlet Thread Size3/8-24 in
Casting MaterialCast Iron
Package Contents1 Drum Brake Wheel Cylinder
Thread Diameter3/8

This part fits 49 vehicles. Search below:

YearMakeModelSubmodelDrive TypeFuel TypePositionNotes
2002ChevroletExpress 1500RearFits 15/16" bore size drum brakes on multiple vehicle models.
2002ChevroletExpress 2500GASRear15/16 In. bore size Drum Brake Wheel Cylinder measuring 11.15 In. x 2.75 In.
2002GMCSavana 1500RearFits 15/16" bore size drum brakes on multiple vehicle models.
2002GMCSavana 2500GASRear15/16 In. bore size Drum Brake Wheel Cylinder measuring 11.15 In. x 2.75 In.
2001ChevroletExpress 1500RearFits 15/16" bore size drum brakes on multiple vehicle models.
2001ChevroletExpress 2500GASRear15/16 In. bore size Drum Brake Wheel Cylinder measuring 11.15 In. x 2.75 In.
2001GMCSavana 1500RearFits 15/16" bore size drum brakes on multiple vehicle models.
2001GMCSavana 2500GASRear15/16 In. bore size Drum Brake Wheel Cylinder measuring 11.15 In. x 2.75 In.
2000ChevroletExpress 1500RearFits 15/16" bore size drum brakes on multiple vehicle models.
2000ChevroletExpress 2500GASRear15/16 In. bore size Drum Brake Wheel Cylinder measuring 11.15 In. x 2.75 In.
2000GMCSavana 1500RearFits 15/16" bore size drum brakes on multiple vehicle models.
2000GMCSavana 2500GASRear15/16 In. bore size Drum Brake Wheel Cylinder measuring 11.15 In. x 2.75 In.
1999CadillacDeVilleRearFits 15/16" bore size drum brakes on multiple vehicle models.
1999ChevroletExpress 1500RearFits 15/16" bore size drum brakes on multiple vehicle models.
1999ChevroletExpress 2500GASRear15/16 In. bore size Drum Brake Wheel Cylinder measuring 11.15 In. x 2.75 In.
1999DodgeRam 1500RearFits 15/16" bore size drum brakes on multiple vehicle models.
1999DodgeRam 2500RWDRearFits 15/16" bore size drum brakes on multiple vehicle models.
1999DodgeRam 25004WDRearBore size: 15/16 In., Not compatible with 13 In. x 3.50 In. Brakes.
1999GMCSavana 1500RearFits 15/16" bore size drum brakes on multiple vehicle models.
1999GMCSavana 2500GASRear15/16 In. bore size Drum Brake Wheel Cylinder measuring 11.15 In. x 2.75 In.
1998CadillacDeVilleRearFits 15/16" bore size drum brakes on multiple vehicle models.
1998ChevroletExpress 1500RearFits 15/16" bore size drum brakes on multiple vehicle models.
1998ChevroletExpress 2500GASRear15/16 In. bore size Drum Brake Wheel Cylinder measuring 11.15 In. x 2.75 In.
1998DodgeRam 1500RearFits 15/16" bore size drum brakes on multiple vehicle models.
1998DodgeRam 2500RWDRearFits 15/16" bore size drum brakes on multiple vehicle models.
1998DodgeRam 25004WDRearBore size: 15/16 In., Not compatible with 13 In. x 3.50 In. Brakes.
1998GMCSavana 1500RearFits 15/16" bore size drum brakes on multiple vehicle models.
1998GMCSavana 2500GASRear15/16 In. bore size Drum Brake Wheel Cylinder measuring 11.15 In. x 2.75 In.
1997CadillacDeVilleConcoursRearFits 15/16" bore size drum brakes on multiple vehicle models.
1997ChevroletExpress 1500RearFits 15/16" bore size drum brakes on multiple vehicle models.
1997ChevroletExpress 2500GASRear15/16 In. bore size Drum Brake Wheel Cylinder measuring 11.15 In. x 2.75 In.
1997DodgeRam 1500RearFits 15/16" bore size drum brakes on multiple vehicle models.
1997DodgeRam 2500RWDRearFits 15/16" bore size drum brakes on multiple vehicle models.
1997DodgeRam 25004WDRearBore size: 15/16 In., Not compatible with 13 In. x 3.50 In. Brakes.
1997GMCSavana 1500RearFits 15/16" bore size drum brakes on multiple vehicle models.
1997GMCSavana 2500GASRear15/16 In. bore size Drum Brake Wheel Cylinder measuring 11.15 In. x 2.75 In.
1996ChevroletExpress 1500RearFits 15/16" bore size drum brakes on multiple vehicle models.
1996ChevroletExpress 2500GASRear15/16 In. bore size Drum Brake Wheel Cylinder measuring 11.15 In. x 2.75 In.
1996DodgeRam 1500RearFits 15/16" bore size drum brakes on multiple vehicle models.
1996DodgeRam 2500RWDRearFits 15/16" bore size drum brakes on multiple vehicle models.
1996DodgeRam 25004WDRearBore size: 15/16 In., Not compatible with 13 In. x 3.50 In. Brakes.
1996GMCSavana 1500RearFits 15/16" bore size drum brakes on multiple vehicle models.
1996GMCSavana 2500GASRear15/16 In. bore size Drum Brake Wheel Cylinder measuring 11.15 In. x 2.75 In.
1995DodgeRam 1500RearFits 15/16" bore size drum brakes on multiple vehicle models.
1995DodgeRam 2500RWDRearFits 15/16" bore size drum brakes on multiple vehicle models.
1995DodgeRam 25004WDRearBore size: 15/16 In., Not compatible with 13 In. x 3.50 In. Brakes.
1994DodgeRam 1500RearFits 15/16" bore size drum brakes on multiple vehicle models.
1994DodgeRam 2500RWDRearFits 15/16" bore size drum brakes on multiple vehicle models.
1994DodgeRam 25004WDRearBore size: 15/16 In., Not compatible with 13 In. x 3.50 In. 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:

134.67016172-1572180187662037985341024761602784-40016F131225W-87016W906727WC14102

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

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