Wilwood Front Brake & Hub Conversion Kit for Ford Drum-Brake Spindles (1937–1948) — Red Dynalite, 12.19-Inch Plain-Face Rotors

Red powder-coated calipers distinguish this plain-rotor version of the early Ford front conversion. The included hubs and bearings support 12.19-inch vented rotors, while the four-piston Dynalite calipers mount on application-specific brackets. Calipers, brake rotors, master cylinders, valves, fittings and brake lines are all part of Wilwood Engineering’s range of disc brake systems and components. The Camarillo, California company was founded in 1977 by Bill Wood and designs and manufactures these products for motorsport, street-performance and specialized applications. Compatibility with the complete brake system determines the appropriate component choice.

Technical Details

• Manufacturer part number: 140-8583-R
• Brake rotors: 12.19 x 0.81 inches; Iron; Plain Face; vented
• Included pad compound: BP-10; pistons: stainless steel
• Caliper body: Forged aluminum; hydraulic inlet: 1/8-27 NPT
• Rotor surface finish: Plain; rotors are not supplied burnished
• Supplied hub wheel pattern(s): 5 x 4.5 in; 5 x 114.3 mm; 5 x 4.75 in; 5 x 120.65 mm
• Supplied wheel studs: 1/2-20 in
• Hydraulic hoses: not included; match the separate lines and fittings to the application
• Included hub package: hubs, bearings, seals, adapters and mounting hardware; original spindles are retained
• Not included: master cylinder and brake booster
• Wheel clearance: 15-inch wheels may fit; check the complete manufacturer caliper/rotor template
• Quantity: sold as one axle kit
• Service calipers: 4-piston Forged Dynalite Internal; Red Powder Coat; lug mounting

Fitment & Compatibility

The red plain-rotor option requires the documented early Ford drum-brake spindle and correct bearing dimensions. Verify the individual 1937–1948 passenger-car, delivery or pickup entry; the long application span does not imply that every Ford axle shares this arrangement. Use DS481 to check hub placement and bracket alignment, and select compatible front lines separately. Wilwood lists the 18-inch 220-8307 hose option, subject to suitable routing. Inspect wheel seating carefully on the supplied hubs before the vehicle is put into service.

The wheel contact surface must seat fully on the hub. If it overhangs the hub face, Wilwood requires the separate 6.60-inch-diameter x 0.20-inch steel spacer 300-11961. For stamped-steel wheels that do not overhang, Wilwood recommends the 6.15-inch x 0.09-inch hub shield 300-10716. Inspect contact surfaces and follow the wheel maker’s tightening requirements.

Check the full application table below, including its model-year splits and brake-configuration requirements.

Manufacturer Resources

• Wilwood kit specifications and wheel-clearance information
• Installation instructions and component list

WARNING: This product can expose you to chemicals including Arsenic, Cadmium, Chromium (Hexavalent compounds), Lead, Nickel, Cobalt and Antimony Trioxide which are known to the State of California to cause cancer or other reproductive harm. For more information go to www.p65warnings.ca.gov.

With over 20 years of parts and fitment experience, PMB Performance can help review the intended brake installation. Provide your VIN, wheel measurements and any modified axle or spindle details when asking about compatibility.

Vehicle Applications

Application Notes

1. Kit may fit some 15" wheels. Check wheel clearance diagram in kit installation instructions before purchase.
2. Universal Flexline kits available: 220-7056 (14"), 220-7699 (16") or 220-8307 (18"). Choose correct length for your application.
3. Master Cylinder may require modification to existing pushrod assembly to install.
4. This front brake kit contains no parking-brake mechanism. Parking-brake cable selection belongs to the separate rear brake installation.
5. Line kit included (manufacturer): None
6. Front line-kit reference: 220-8307