Dorman - First Stop Drum Brake Wheel Cylinder P/N:W7537
Keep the shoes pressing firmly against the drum with this Dorman drum brake wheel cylinder, First Stop part number W36041, a front left unit that converts hydraulic pressure from the master cylinder into the force that applies the brake shoes. It fits many vehicles, among them the 1965-1970 Oldsmobile Delta 88, 1965-1969 Oldsmobile 98 and 1965-1968 Cadillac Calais. See the Buyer's Guide tab for the full list.
A wheel cylinder may need replacing if you see brake fluid weeping at the drum, notice fluid-soaked shoes, feel a soft pedal, or find the vehicle pulling to one side. Confirm the cause before replacing parts. This listing is for one wheel cylinder. Replacing the cylinders on both sides of the axle together is recommended for even, balanced braking.
Interchange: 84-36021 · 84-50021 · 101-1466 · W-82021 · 134.62021 · 135.62021 · 375-46000
8436021 · 8450021 · 1011466 · W82021 · 13462021 · 13562021 · 37546000 · W906179 · 33356 · WC252440 · 5460642 · 5461031 · 5462128 · 5465076 · 5469332 · WC36041 · F40877 · WC40877
This part cross-references / interchanges with the following part numbers:
What does a drum brake wheel cylinder do?
It receives hydraulic pressure from the master cylinder, and its pistons push the brake shoes outward against the drum. W36041 is cataloged for the front left position.
Does it fit my 1965-1970 Oldsmobile Delta 88?
Yes, the 1965-1970 Oldsmobile Delta 88 is a listed application, as are the 1965-1969 Oldsmobile 98 and 1965-1968 Cadillac Calais. Check the Buyer's Guide tab for your exact vehicle.
What are the cups and boots made of?
Dorman lists high-quality EPDM rubber for the cups and boots. The cylinder bores are surface-tested to provide an optimal sealing surface for the pressure cups.
What are signs a wheel cylinder may need replacing?
Common signs include brake fluid seeping at the drum or backing plate, fluid-soaked shoes, a soft or sinking pedal, or pulling to one side. Diagnose the cause first, as other brake parts can cause these symptoms.
Is it sold individually, and should I replace both sides?
It is sold individually for the front left position. Replacing the wheel cylinders on both sides of the axle together is recommended for even, balanced braking, and the brakes should be bled after installation.
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.