Dorman - First Stop Drum Brake Wheel Cylinder W37872
Dorman - First Stop Drum Brake Wheel Cylinder W37872 - view 2
Dorman - First Stop Drum Brake Wheel Cylinder W37872 - view 3
Dorman - First Stop Drum Brake Wheel Cylinder W37872
Dorman - First Stop Drum Brake Wheel Cylinder W37872 - view 2
Dorman - First Stop Drum Brake Wheel Cylinder W37872 - view 3

Rear Drum Brake Wheel Cylinder for 1998-2004 Nissan Frontier & More - Dorman W37872

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$17.99
MPN: W37872
Item Package Quantity: 1
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Dorman - First Stop Drum Brake Wheel Cylinder P/N:W37872
Dorman - First Stop Drum Brake Wheel Cylinder P/N:W37872
$17.99

Push your rear brake shoes firmly against the drum with the Dorman - First Stop Drum Brake Wheel Cylinder W37872. Using hydraulic pressure from the brake line, this rear wheel cylinder expands to drive the shoes outward against the drum. It installs as a direct replacement, engineered as a direct match for the original wheel cylinder on the 1988-1994 Nissan D21, the 1998-2004 and 2015 Nissan Frontier, and the 1990-1997 Nissan Pickup (all engines).

  • Aluminum body: built with high-quality EPDM rubber cups and boots for long-lasting performance.
  • Surface-tested bores: the cylinder bore is surface-tested to provide an optimal sealing surface for the pressure cups.
  • Bleeder screw included: ships with a bleeder screw (bleeder screw cap not included).
  • Direct fit specs: 0.875 in bore with an M10 x 1.0 inlet thread.

Replacing the wheel cylinder while servicing the drum brakes is a practical way to keep the hydraulic side of the rear brake in good order. If a leaking or seized wheel cylinder is behind a soft pedal or brake fluid at the drum, this replaces it. Sold individually; each listed application uses two rear wheel cylinders, so order two and replace both sides together as a matched set for even, balanced braking. Manufacturer part number W37872. Country of origin: China.

Frequently Asked Questions

What does the W37872 wheel cylinder do?

It uses hydraulic pressure from the brake line to expand and push the rear drum brake shoes outward against the drum. It's built on an aluminum body with EPDM rubber cups and boots.

Which vehicles does it fit?

It's a direct replacement for the rear drum brakes on the 1988-1994 Nissan D21, the 1998-2004 and 2015 Nissan Frontier, and the 1990-1997 Nissan Pickup (all engines). See the Buyer's Guide tab.

Is a bleeder screw included?

Yes, a bleeder screw is included. A bleeder screw cap is not included.

Should I replace both wheel cylinders?

This listing is for one cylinder, and each application uses two. Replacing both rear sides together as a matched set is recommended for even, balanced braking.

What are the bore and thread sizes?

The bore inside diameter is 0.875 in, and the brake line inlet thread is M10 x 1.0 (10 mm thread diameter, 1.0 pitch).

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