Dorman - First Stop Drum Brake Wheel Cylinder W37856
Dorman - First Stop Drum Brake Wheel Cylinder W37856 - view 2
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Dorman - First Stop Drum Brake Wheel Cylinder W37856
Dorman - First Stop Drum Brake Wheel Cylinder W37856 - view 2
Dorman - First Stop Drum Brake Wheel Cylinder W37856 - view 3

Dorman - First Stop Drum Brake Wheel Cylinder P/N:W37856

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$15.99
MPN: W37856
Item Package Quantity: 1
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Dorman - First Stop Drum Brake Wheel Cylinder P/N:W37856
Dorman - First Stop Drum Brake Wheel Cylinder P/N:W37856
$15.99

Bring hydraulic pressure back to your rear drum brakes with the Dorman First Stop Drum Brake Wheel Cylinder (MPN W37856). It drops in as a direct-fit replacement engineered to match the original wheel cylinder's fit, function and performance on the 1989-1992 Ford Aerostar (All), 1991-1994 Ford Explorer (All), and 1991-1994 Mazda Navajo (All).

Mounted at the rear drum brake, this wheel cylinder uses hydraulic pressure from the brake system to push the brake shoes outward against the drum, then lets them retract when you release the pedal.

  • Cast iron body: durable housing with a surface-tested bore for an optimum sealing surface against the pressure cups.
  • EPDM rubber cups and boots: high-quality sealing components made for long-lasting performance.
  • Bleeder screw included: comes with the bleeder screw; the bleeder screw cap is not included.
  • Key specs: 0.875 in inside diameter and a 3/8-24 in inlet thread.

The listed applications use two per vehicle (quantity 2); each unit is sold individually, so order to match your job. Package contains one drum brake wheel cylinder. Signs this part may need replacing include brake fluid seeping behind the drum, a spongy or sinking pedal, or uneven rear braking — diagnose the cause before replacing. Country of origin: China.

Interchange: 18E1209 · 18E319 · 784-42015 · 78442015 · 784-85015 · 78485015 · 84-42015 · 8442015 · W906652 · 101-1605 · 1011605 · W-85015 · W85015 · 34028 · 134.65015 · 13465015 · 135.65015 · 13565015 · WC14028 · 375-54074 · 37554074 · 1L2Z2V261CA · E99Z2261A · ZZL026610A · BRWC-29 · BRWC29 · 2037856 · WC37856 · F122406 · WC122406. Manufacturer part number W37856.

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

18E1209, 18E319, 784-42015, 784-85015, 84-42015, W906652, 101-1605, W-85015, 34028, 134.65015, 135.65015, WC14028, 375-54074, 1L2Z2V261CA, E99Z2261A, ZZL026610A, BRWC-29, 2037856, WC37856, F122406, WC122406

Frequently Asked Questions

What vehicles does this wheel cylinder fit?

It's a direct-fit replacement for the 1989-1992 Ford Aerostar (All), 1991-1994 Ford Explorer (All), and 1991-1994 Mazda Navajo (All). See the Buyer's Guide tab for full details.

Is a bleeder screw included?

Yes, the bleeder screw is included. The bleeder screw cap is not included.

How many do I need for my vehicle?

The listed applications use two per vehicle (quantity 2). Each cylinder is sold individually and the package contains one, so order to match your job.

What are the key specifications?

It has a cast iron body, a 0.875 in inside diameter, a 3/8-24 in inlet thread, and EPDM rubber cups and boots.

What are signs the wheel cylinder may need replacing?

Brake fluid seeping behind the drum, a spongy or sinking pedal, or uneven rear braking can be signs. Diagnose the cause before replacing, as other parts may be involved.

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