Dorman - First Stop Drum Brake Wheel Cylinder W37317
Dorman - First Stop Drum Brake Wheel Cylinder W37317 - view 2
Dorman - First Stop Drum Brake Wheel Cylinder W37317 - view 3
Dorman - First Stop Drum Brake Wheel Cylinder W37317
Dorman - First Stop Drum Brake Wheel Cylinder W37317 - view 2
Dorman - First Stop Drum Brake Wheel Cylinder W37317 - view 3

Rear Drum Brake Wheel Cylinder for 1965-1967 GMC Reo Truck & More - Dorman W37317

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$57.99
MPN: W37317
Item Package Quantity: 1
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Dorman - First Stop Drum Brake Wheel Cylinder P/N:W37317
Dorman - First Stop Drum Brake Wheel Cylinder P/N:W37317
$57.99

Put fresh hydraulic force behind your rear drum brakes with this Dorman drum brake wheel cylinder, part number W37317 from the Dorman - First Stop line. It fits many vehicles, among them the 1965-1967 GMC Reo Truck, 1954-1956 Dodge C-3 and 1956 Dodge C-4. See the Buyer's Guide tab for the full list. The cylinder turns hydraulic pressure from the master cylinder into the force that pushes the brake shoes out against the drum.

  • Ideal replacement: Specifically engineered as a direct match for the original drum brake wheel cylinder, built to match its fit, function and performance on the listed applications.
  • Quality materials: Made with high-quality EPDM rubber cups and boots.
  • Professionally tested: The wheel cylinder bores are surface-tested to give the pressure cups an optimum sealing surface, and each unit is manufactured and tested for quality assurance.
  • Cost-effective service: Replacing the cylinder while the drum brakes are already apart is a practical way to help maintain brake performance.

A wheel cylinder may need replacing if you see brake fluid seeping inside the drum or around the backing plate, a soft or sinking brake pedal, a vehicle that pulls to one side, or a falling fluid level. Diagnose the cause first. Drum brakes sit on both sides of the axle, so we recommend replacing the wheel cylinders on both sides together for balanced braking. After installation, bleed the brake system as described in the vehicle's service information.

Interchange: 84-58005 · W-92005 · 134.82005 · 375-54144
8458005 · W92005 · 13482005 · 37554144 · 18E121 · W906403 · 33312 · 1507984 · 567130 · WC257220 · 16484F · DX3590H · DX4759 · 2001942 · 2106233 · 61060R91 · 966460R91 · 746 · WC37317 · F746 · WC746 · 127392 · 303815 · 327635 · C15022 · C9532

This part cross-references / interchanges with the following part numbers:

18E121, 84-58005, W906403, W-92005, 33312, 134.82005, 1507984, 567130, WC257220, 375-54144, 16484F, DX3590H, DX4759, 2001942, 2106233, 61060R91, 966460R91, 746, WC37317, F746, WC746, 127392, 303815, 327635, C15022, C9532

Frequently Asked Questions

What does a drum brake wheel cylinder do?

It converts hydraulic pressure from the master cylinder into mechanical force. When you press the pedal, that force pushes the brake shoes outward against the drum.

Which vehicles does the Dorman W37317 wheel cylinder fit?

It fits many vehicles, including the 1965-1967 GMC Reo Truck, 1954-1956 Dodge C-3 and 1956 Dodge C-4. Check the Buyer's Guide tab for your exact application.

What are the cups and boots made of?

The W37317 uses high-quality EPDM rubber cups and boots. Its bores are surface-tested to give the pressure cups an optimum sealing surface.

What are signs a wheel cylinder may need replacing?

Warning signs include brake fluid leaking inside the drum or at the backing plate, a soft or sinking pedal, pulling to one side, or a dropping fluid level. Diagnose the cause before replacing parts.

Do I need to bleed the brakes after installing it?

Yes. Opening the hydraulic system lets air in, so bleed the brakes according to the vehicle's service information after installing the new wheel cylinder.

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