Wilwood Black AERO4 Rear Brake Conversion, 14-Inch SRP Rotors and Electric Parking Kit for Big Ford New-Style Housing Ends

For a compatible new-style Big Ford rear axle, this black AERO4 option uses 14.00-inch drilled/slotted rotors and BP-10 service pads. Its four-piston radial calipers are accompanied by the separate electronic parking assemblies. The 2.50-inch offset, flange dimensions and wheel clearance must all agree with the drawings. Do not substitute the GT version's BP-20 pad specification for this SRP package. Wilwood Engineering was established in 1977 by Bill Wood in Camarillo, California. The company designs and manufactures disc-brake systems and components, from calipers and rotors to master cylinders, valves, fittings and brake lines, for motorsport, street-performance and specialized installations. Each component must match the rest of the brake system.

Technical Details

• Manufacturer part number: 140-15846-D. Quantity: one kit for the stated axle/application.
• Service caliper: AERO4; 4 pistons; stainless piston material. Radial mounting, black powder coat finish.
• Published piston bores: 1.12, 1.12 inches. Supplied pad compound: BP-10.
• Caliper hydraulic inlet: 1/8-27 NPT.
• Separate electronic parking calipers, controller, wiring harness and switch are included. EPB actuation is electrical; hydraulic service braking remains independent.
• Rotor specification: 14.00-inch outside diameter × 1.10-inch thickness; SRP drilled & slotted faces. Spec-37 Iron construction; SRP Drilled Rotor design; published vane configuration: 72 CV.
• Rotor hats: aluminum, black e-coat finish; Big Brake Hat - Flared Bell. Hat offset: 2.035 inch.
• No replacement wheel hubs are supplied; retain or provide the documented matching hub arrangement.
• Wheel mounting patterns: 5 x 4.50; 5 x 4.75; 5 x 5.00 inches.
• Rear housing interface: Big Ford New Style; axle offset: 2.50 in; 63.5 mm.
• Brake hoses are not included. Select suitable braided lines and fittings for the installation.
• Minimum nominal wheel diameter: 18 inches. The wheel must also clear the actual caliper and rotor profile in the installation drawing.
• Mounting hardware and the specified pads are included. Spindles, master cylinder and brake booster are not supplied.

Fitment & Compatibility

Application is controlled by the Big Ford new-style housing flange and a measured 2.50-inch axle offset. The application table lists a 1990 Lincoln Town Car, but the manufacturer does not currently confirm that model application. Do not order for a Town Car by year/model alone; verify the housing-end drawing, bearing retainer and offset first. Check axle-flange diameter, wheel seating, wheel profile and EPB motor clearance through suspension travel. The electronic parking system is for stationary parking hold, not an emergency stop brake. Mounting brackets must allow both service and parking calipers to clear the body and suspension. Use the complete application table below for the individual year, submodel, brake configuration and note attached to each entry.

PMB Performance brings 20+ years of parts and fitment experience to brake selection. Send the actual spindle or axle details, existing brake package and wheel measurements for help checking this combination.

Manufacturer documentation: Installation instructions; Technical bulletin.

Manufacturer Warning

Applicable to brake pads only: Wilwood warns of exposure to arsenic, cadmium, hexavalent chromium compounds, lead, nickel, cobalt and antimony trioxide, chemicals known to California to cause cancer or reproductive harm. More information: P65Warnings.ca.gov.