Dorman - First Stop Drum Brake Wheel Cylinder Kit P/N:3644
$21.99
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Reseal a leaking drum brake wheel cylinder with the Dorman – First Stop Drum Brake Wheel Cylinder Kit (P/N 3644). It's designed to rebuild the front or rear drum brake wheel cylinders on a wide range of vintage Chrysler, DeSoto and Dodge models from 1934–1956 — see the Buyer's Guide tab for the full list.
Direct replacement: the components are designed to match the original parts needed to repair the wheel cylinder on the specified vehicles.
What's in the kit: includes wheel cylinder cups (seals) and dust boots.
Not included: mounting hardware, bleeder screw, bleeder screw cap, wheel cylinder pistons, and the expander spring — this kit supplies the internal sealing components only.
Bore sizes: offered for 1.25 in. and 1.375 in. wheel cylinder bores; confirm your bore in the Buyer's Guide.
A drum brake wheel cylinder uses hydraulic pressure to push its pistons outward, pressing the brake shoes against the drum; the cups seal that fluid while the dust boots keep out dirt and moisture. If worn cups are the cause of a fluid leak at the backing plate or a soft pedal, this kit replaces those sealing parts. Country of origin: China.
It includes wheel cylinder cups (seals) and dust boots. It does not include pistons, the expander spring, mounting hardware, a bleeder screw, or a bleeder screw cap.
What does a drum brake wheel cylinder do?
It converts hydraulic brake-fluid pressure into outward piston movement that presses the brake shoes against the drum. The cups seal the fluid while the boots keep out contamination.
How do I know if my wheel cylinder needs rebuilding?
Signs the cups may be worn include brake fluid leaking at the backing plate or drum and a soft pedal. Diagnose the cause first, since these symptoms can have other sources.
Does this kit fit front or rear brakes?
The catalog lists it for both front and rear drum brake wheel cylinders on the specified applications. Check the Buyer's Guide tab and confirm your wheel cylinder bore size.
Which bore sizes does this kit cover?
It's offered for 1.25 in. and 1.375 in. wheel cylinder bores. Confirm your vehicle's bore in the Buyer's Guide before ordering.
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Dorman
Dorman - First Stop Drum Brake Wheel Cylinder Kit P/N:3644
Drum Brake Wheel Cylinder Repair KitThe components in this drum brake wheel cylinder kit are designed to match the original parts required to repair the wheel cylinder on specified vehicles. Made of...
WARNING:
These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to
www.P65Warnings.ca.gov.
