Dodge & Ford Truck Brake Wheel Cylinder 25.4mm – WC9026 / XUI2704A

CM246

OE Cross Reference Coverage

System	References
Ford	8M-2261-A, C5TZ-2261-C, C9AZ-2261-A, D2SZ-2261-A, D30Z-2261-D, D3SZ-2261-A, 1C2Z-2261-AA
Chrysler / Dodge	3633517, 4088898, 922822
International Harvester	127782R91, 455653C91
Wagner / Generic	WC9026, 1799628
Dorman	W610164

Technical Reference

Item	Detail
Bore Diameter (DIA)	25.4mm (1 inch)
Mounting Size	Φ38/41/2-5/16-18
Port/Connecting Size	M10 × 1.0 and 3/8-24 UNF
Packaging	Neutral box or custom OEM/ODM branding
Certifications	ISO 9001, IATF 16949, VDA6

 

What Is a Brake Wheel Cylinder?
A brake wheel cylinder sits inside a drum brake assembly at each rear wheel. When the driver presses the brake pedal, hydraulic pressure from the master cylinder travels through the brake lines and pushes the wheel cylinder's pistons outward, forcing the brake shoes against the drum to slow the vehicle. It is the drum brake equivalent of a brake caliper in a disc system. The XUI2704A, with a 25.4mm (1-inch) bore, covers drum brake applications across a wide range of North American trucks, vans and passenger cars.

Sixty Years of North American Vehicle Coverage
The fitment list for the XUI2704A runs from a 1953 Ford F-100 through to a 2013 Ford Lobo (Mexico), a span of six decades. That breadth is not coincidental — it reflects how long the 1-inch drum brake wheel cylinder remained the standard specification across American truck and van platforms. Dodge Ram vans, Ford Econoline vans, International Harvester trucks and Jeep pickups from completely different eras all share this bore diameter because the North American truck industry converged on common brake hydraulic dimensions that remained stable across platform generations.
For distributors, this is one of the strongest SKU arguments in a brake parts catalog. A buyer stocking the XUI2704A is not covering one model range — they are covering American Motors, Dodge, Ford, GMC, International Harvester, Jeep, Lincoln, Mercury and Plymouth in a single line item, with OE references spanning both Ford and Chrysler part number systems as well as the Dorman catalog number W610164.
Dual Port Specification: M10×1.0 and 3/8-24 UNF
The connecting size for the XUI2704A lists two thread standards: M10×1.0 (metric) and 3/8-24 UNF (unified fine thread). This reflects the mixed metric and imperial brake line hardware found across the decades and brands covered by this part. Earlier applications typically use 3/8-24 UNF, the North American standard for brake line fittings through the 1970s and into the 1980s. Later applications, particularly Ford platforms from the late 1980s onward, moved toward metric M10×1.0 fittings. A wheel cylinder that accommodates both standards is essential for a part with this breadth of coverage — buyers should verify the port thread for their specific application against the OE reference before ordering.

Who Stocks This Part
The primary buyers are North American aftermarket distributors, specialty classic and vintage truck parts suppliers, and multi-brand brake parts importers serving independent repair shops. The Dodge Ram van series (B300/B350) alone covers nearly three decades of production. Add the Ford Econoline E-150 and E-250 from 1984 to 2004, the Ford F-150 from 1997 to 2009, and the International Harvester Scout and truck range — and this becomes one of the highest-coverage single SKUs in a drum brake wheel cylinder catalog. Distributors who specialize in American truck parts for export markets, particularly in Latin America, the Middle East and Australia where these vehicles remain in commercial use, will recognize the value of the combined OE cross-reference list immediately.
OEM/ODM packaging and private label available for bulk orders.

Q1: The fitment list covers vehicles from 1953 to 2013 — how is one wheel cylinder specification stable for that long?
The 1-inch (25.4mm) bore became a North American truck brake standard early in the postwar period and remained in use across multiple generations of Dodge, Ford and GM truck platforms because there was no engineering reason to change it. Bore diameter is determined by braking force requirements for vehicle weight class, and light-to-medium truck weight classes stayed consistent enough that the hydraulic specification did not need to change.

Q2: What is the difference between the M10×1.0 and 3/8-24 UNF port options?
M10×1.0 is a metric thread used on later Ford and some Dodge applications, while 3/8-24 UNF is the imperial unified fine thread used on most pre-1985 North American vehicles and on International Harvester and Jeep applications throughout their production runs. Mixing the two is not possible without an adapter — confirm which fitting your brake line uses before ordering.

Q3: Is the Dorman W610164 the same part?
W610164 is Dorman's aftermarket catalog reference for this specification. Buyers sourcing from a Dorman-based inventory system will find the XUI2704A matches that listing across bore, mounting and port dimensions.

Q4: Does this cover both the rear axle drum brakes on F-150 and the front drums on older Ford trucks?
Wheel cylinder position (front or rear) depends on the specific application year and brake system configuration. The OE reference for the vehicle should confirm whether this cylinder was fitted to front or rear drums on a given model year — particularly relevant for the 1953–1970s Ford applications which may have had front drum brakes.

Q5: Are there other bore sizes in this series for heavier Dodge or Ford truck applications?
Yes, Xusen produces brake wheel cylinders across multiple bore diameters. If your application requires a different bore, send us the OE reference and we can confirm the correct specification from our range.