Turn hydraulic pressure into shoe-to-drum braking force at the rear wheels with this Dorman drum brake wheel cylinder from the First Stop line, part number W78734. It fits many vehicles, among them the 1966-1977 Dodge Charger, 1965-1981 Chrysler Town & Country and 1965-1968 Chrysler 300. See the "Vehicles it fits" section for the full list. It is a direct replacement engineered to match the original wheel cylinder in fit, function and performance, and it is manufactured and tested for quality assurance.
Inside the rear drum brake assembly, the wheel cylinder takes fluid pressure from the master cylinder and pushes the brake shoes outward against the drum.
- Direct match: Engineered as a direct match for the original drum brake wheel cylinder on the listed applications.
- Cost-effective service: Replacing the wheel cylinder while the drum brakes are already apart is a quick, economical step that helps support proper brake performance.
- EPDM rubber cups and boots: Built with high-quality EPDM rubber cups and boots.
- Surface-tested bores: The cylinder bores are surface-tested for an optimal sealing surface for the pressure cups.
Signs it may need replacing: brake fluid leaking inside the drum, fluid-soaked brake shoes, a soft or sinking pedal, or pulling to one side under braking. If a leaking wheel cylinder is the cause, W78734 replaces it.
Interchange: 784-32001 · 84-32001 · 101-1525 · W-83001 · 134.63001 · 135.63001 · 375-39000
78432001 · 8432001 · 1011525 · W83001 · 13463001 · 13563001 · 37539000 · 18E80 · W906227 · W906332 · 33597 · 2460666 · 2881606 · 3420997 · 3780525 · WC13597 · WC135971 · 5473034 · 5473036 · 106315 · WC37053 · WC37235 · WC37538 · F106315 · WC106315
This part cross-references / interchanges with the following part numbers:
18E80, 784-32001, 84-32001, W906227, W906332, 101-1525, W-83001, 33597, 134.63001, 135.63001, 2460666, 2881606, 3420997, 3780525, WC13597, WC135971, 375-39000, 5473034, 5473036, 106315, WC37053, WC37235, WC37538, F106315, WC106315
Frequently Asked Questions
What does a drum brake wheel cylinder do?
It receives hydraulic pressure from the master cylinder and pushes the brake shoes outward against the drum. W78734 is cataloged for the rear drum brakes on the listed applications.
Will this Dorman wheel cylinder fit my 1966-1977 Dodge Charger?
Yes. The 1966-1977 Dodge Charger is a listed application, along with the 1965-1981 Chrysler Town & Country and 1965-1968 Chrysler 300. Check the "Vehicles it fits" section to confirm your exact vehicle.
What are the cups and boots made of?
The cups and boots on W78734 are made from high-quality EPDM rubber.
How are the cylinder bores checked?
The wheel cylinder bores are surface-tested for an optimal sealing surface for the pressure cups. Each unit is also manufactured and tested for quality assurance.
What are signs a wheel cylinder may need replacing?
Brake fluid seeping inside the drum, fluid-soaked shoes, a soft or sinking pedal, or pulling while braking are signs a wheel cylinder may need replacing. These symptoms can have other causes, so diagnose the brakes before replacing parts.
