Front Left Drum Brake Wheel Cylinder for 1946-1948 Chevrolet Fleetline & More - Dorman W3731

$91.99

Dorman - First Stop Drum Brake Wheel Cylinder W3731

Dorman - First Stop Drum Brake Wheel Cylinder W3731 - view 2

Dorman - First Stop Drum Brake Wheel Cylinder W3731 - view 3

Dorman - First Stop Drum Brake Wheel Cylinder W3731 - view 4

Part number: W3731

UPC: 082702410172

Condition: New

Weight: 1.50 LBS

Item Package Quantity: 1

$91.99

Current Stock: 6

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Dorman - First Stop Drum Brake Wheel Cylinder P/N:W3731

$91.99

Description

Push the drum brake shoes outward against the drum with the Dorman - First Stop Drum Brake Wheel Cylinder W3731 — a direct-fit hydraulic replacement for the front-left wheel position on the 1946-1948 Chevrolet Fleetline, 1946-1948 Chevrolet Fleetmaster, and 1946-1948 Chevrolet Stylemaster Series (All engines). It is engineered to install like the original wheel cylinder on these listed applications, and is manufactured and tested for quality assurance.

Cast iron construction: a cast iron body houses a 1.25 in inside-diameter bore.
EPDM sealing: made with high-quality EPDM rubber cups and boots for long-lasting performance.
Surface-tested bore: the cylinder bore is surface-tested to provide an optimum sealing surface for the pressure cups.
Serviceable: a bleeder screw is included (bleeder screw cap not included); 7/16-20 inlet thread.

Swapping in a fresh wheel cylinder while the drum brakes are already apart is a cost-effective way to keep the hydraulic side of the brake working correctly. Sold individually as the front-left unit; wheel cylinders are best replaced as a matched pair across the axle for balanced braking. Country of origin: Taiwan.

Interchange: W906009 · 134.62076 · 13462076 · WC257190 · 375-47041 · 37547041 · 5300954 · WC3731 · F3731
Manufacturer part number W3731.

Manufacturer's description

Product specs

Vehicles it fits

Interchange numbers

This part cross-references / interchanges with the following part numbers:

W906009, 134.62076, WC257190, 375-47041, 5300954, WC3731, F3731

Buyer's Q&A

Frequently Asked Questions

What does the W3731 wheel cylinder do?

It converts hydraulic brake-line pressure into mechanical force, pushing the drum brake shoes outward against the drum. Its EPDM rubber cups seal the piston bore.

Which vehicles does this fit?

It's a direct-fit replacement for the front-left position on the 1946-1948 Chevrolet Fleetline, Fleetmaster, and Stylemaster Series (All engines). Check the "Vehicles it fits" section to confirm your vehicle.

Does it include a bleeder screw?

Yes, a bleeder screw is included. The bleeder screw cap is not included, and the inlet thread size is 7/16-20.

What is the bore size and material?

The cast iron cylinder has a 1.25 in inside-diameter bore, sealed by high-quality EPDM rubber cups and boots.

How do I know if my wheel cylinder needs replacing?

Signs it may need replacing include brake fluid leaking inside the drum, damp brake shoes, or a soft, low pedal. Diagnose the cause before replacing, and service both sides as a pair.