Keep your rear drum brakes applying firmly with the Dorman First Stop Drum Brake Wheel Cylinder W37786, a direct-fit replacement for the 1986-1987 (uses two), 1988, and 1988-1995 Suzuki Samurai [All]. This rear wheel cylinder converts hydraulic pressure from the brake line into the outward force that pushes the brake shoes against the drum.
- Direct match: engineered to drop in like the original wheel cylinder on the listed vehicles, and tested for quality assurance.
- Quality materials: made with high-quality EPDM rubber cups and boots.
- Build & specs: aluminum body with a 0.875 in bore and an M10 x 1.0 inlet thread.
- Ready to install: a bleeder screw is included (bleeder screw cap not included), and the bore is surface-tested for an optimal sealing surface for the pressure cups.
Cataloged for the rear position (rear right and rear left). Sold individually—the package contains one cylinder; some applications use two, so order the quantity your vehicle requires. Signs the cylinder may need replacing include fluid seepage behind the drum, a soft or sinking pedal, or a rear brake that drags. If a leaking or seized wheel cylinder is the cause, this replaces it—diagnose the cause before replacing. Country of origin: China.
Interchange: 18E297 · 784-10003 · 78410003 · 84-10003 · 8410003 · W906626 · W906826 · W906827 · 101-1320 · 1011320 · W-50003 · W50003 · 072-8446 · 0728446 · 34035 · 134.48003 · 135.48003 · WC14035 · 375-01000 · 37501000 · 2037786 · WC370175 · WC37786 · 5340283300 · F116686 · WC116686 · Manufacturer part number W37786
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What does this wheel cylinder do?
It converts hydraulic pressure from the brake line into the outward force that pushes the rear brake shoes against the drum to apply the brakes.
Does it fit my Suzuki Samurai?
It's a direct-fit rear wheel cylinder for the 1986-1987, 1988, and 1988-1995 Suzuki Samurai (All). Check the Buyer's Guide tab to confirm your vehicle.
How many do I need?
The package contains one cylinder. Most listed Samurai years use one, while 1986-1987 applications use two—order the quantity your vehicle requires.
Is the bleeder screw included?
Yes, a bleeder screw is included. A bleeder screw cap is not included with this cylinder.
What are the bore and thread specs?
It has a 0.875 in bore and an M10 x 1.0 inlet thread, with an aluminum body and EPDM rubber cups and boots.
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