Help keep your rear drum brakes working as designed with this Dorman drum brake wheel cylinder, part number W37418 from the Dorman - First Stop line. It uses hydraulic pressure from the master cylinder to push the rear brake shoes out against the drum. It fits many vehicles, among them the 1985-1989 Subaru DL, 1990-1994 Subaru Loyale and 1985-1989 Subaru GL-10. See the "Vehicles it fits" section for the full list and engine details.
This direct-replacement rear wheel cylinder was engineered specifically to match the original unit's fit, function and performance on the listed applications. Dorman builds and tests each one for quality assurance.
- Ideal replacement: engineered as a direct match for the original drum brake wheel cylinder on the listed applications.
- Cost-effective fix: replacing the cylinder while you service the drum brakes is a cost-effective way to help maintain brake performance.
- Quality materials: the cups and boots are made from high-quality EPDM rubber.
- Professionally tested: the bores are surface-tested so the pressure cups have a proper sealing surface.
A leaking wheel cylinder may leave brake fluid inside the drum or on the backing plate. It may also cause a soft pedal or uneven braking. If a worn wheel cylinder is the cause, this unit replaces it. Diagnose the brake system first, then bleed the brakes and follow the vehicle service information after installation.
Interchange: 784-18003 · 84-18003 · 101-1313 · W-55003 · 072-5473 · 134.47003 · 135.47003 · 375-13003
18E157 · W906461 · 33845 · 33924 · WC13924 · WC37418 · 25177GA360 · 625200470 · F116976 · WC116976 · 78418003 · 8418003 · 1011313 · W55003 · 0725473 · 13447003 · 13547003 · 37513003
This part cross-references / interchanges with the following part numbers:
18E157, 784-18003, 84-18003, W906461, 101-1313, W-55003, 072-5473, 33845, 33924, 134.47003, 135.47003, WC13924, 375-13003, WC37418, 25177GA360, 625200470, F116976, WC116976
Frequently Asked Questions
What does a drum brake wheel cylinder do?
It turns hydraulic pressure from the master cylinder into force that pushes the brake shoes against the drum. Dorman W37418 is a rear wheel cylinder for the listed applications.
Which vehicles does the Dorman W37418 fit?
It fits many Subaru models, including the 1985-1989 Subaru DL, 1990-1994 Subaru Loyale and 1985-1989 Subaru GL-10. See the "Vehicles it fits" section for the full list.
What are the cups and boots made of?
The cups and boots on this wheel cylinder are made from high-quality EPDM rubber. The bores are surface-tested to give the pressure cups a proper sealing surface.
What are signs a wheel cylinder may need replacing?
Brake fluid inside the drum or on the backing plate, a soft or low pedal, and uneven braking can be signs. Other brake parts can cause similar symptoms, so diagnose the cause first.
Should I replace the wheel cylinder during a drum brake service?
Dorman describes replacing the cylinder during a drum brake service as a cost-effective step. After installation, bleed the brakes and follow the vehicle service information.
