Fitment questions?
Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.
Product details
This front conversion uses red Dynalite calipers and plain-face iron rotors on the supplied dual-pattern hubs. The documented 1979–1990 GM applications share the required 11-inch-rotor spindle arrangement, with model-specific qualifications retained below. Bill Wood founded Wilwood Engineering in 1977; the company is based in Camarillo, California. Wilwood designs and manufactures calipers, brake rotors, master cylinders, valves, fittings and brake lines as part of its disc brake systems and component range for motorsport, street-performance and specialized applications. Each component must suit the requirements of the complete brake installation.
Technical Details
- Manufacturer part number: 140-9053-R
- 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
- Brake rotors: 12.19 x 0.81 inches; Iron; Plain Face; vented
- Included pad compound: BP-10; pistons: stainless steel
Fitment & Compatibility
This hub kit is for the specified GM factory disc spindles with original 11-inch rotors. The application list includes 1979–1981 Camaro/Firebird, selected 1979 GM compact models, the listed full-size cars and wagons through 1985–1986, and Caprice through 1990. Match each model-year entry and spindle requirement rather than assuming every GM car in this range is covered.
DS504 requires substantial spindle/steering-arm machining, including drilled and tapped bracket holes and removal of interfering ears. Have a qualified machine shop perform the work. Front hoses, including the listed 220-10509 reference, are separate and require vehicle-specific routing checks.
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.
Review the complete fitment table below before purchase, retaining the restrictions attached to the chosen vehicle.
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.
For fitment help, contact PMB Performance with your VIN and details of any axle, spindle or brake changes. Our team has over 20 years of experience checking parts and fitment, including the dimensions that a model-year search cannot establish.
Vehicle Applications
| Years | Make | Model | Submodel | Model option | Front brakes | Rear brakes | Kit application | Notes |
|---|---|---|---|---|---|---|---|---|
| 1979, 1981-1983 | Buick | Estate Wagon | With OE 11" Rotor Spindles | Disc | Drum | Front Kit | 1, 2, 3, 4, 5, 6 | |
| 1979, 1981-1985 | Buick | LeSabre | With OE 11" Rotor Spindles | Disc | Drum | Front Kit | 1, 2, 3, 4, 5, 6 | |
| 1979 | Buick | Skylark | Disc Brake Spindle | Disc | Drum | Front Kit | 1, 2, 3, 4, 5, 6 | |
| 1979, 1981 | Chevrolet | Camaro | Disc Brake Spindle | Disc | Drum | Front Kit | 1, 2, 3, 4, 5, 6 | |
| 1979, 1981-1990 | Chevrolet | Caprice | With OE 11" Rotor Spindles | Disc | Drum | Front Kit | 1, 2, 3, 4, 5, 6 | |
| 1979, 1981-1985 | Chevrolet | Impala | With OE 11" Rotor Spindles | Disc | Drum | Front Kit | 1, 2, 3, 4, 5, 6 | |
| 1979 | Chevrolet | Nova | Disc Brake Spindle | Disc | Drum | Front Kit | 1, 2, 3, 4, 5, 6 | |
| 1979 | Oldsmobile | Custom Cruiser | With OE 11" Rotor Spindles | Disc | Drum | Front Kit | 1, 2, 3, 7, 4, 5, 6 | |
| 1979 | Oldsmobile | Delta 88 | With OE 11" Rotor Spindles | Disc | Drum | Front Kit | 1, 2, 3, 7, 4, 5, 6 | |
| 1979 | Oldsmobile | Omega | Disc Brake Spindle | Disc | Drum | Front Kit | 1, 2, 3, 7, 4, 5, 6 | |
| 1979 | Pontiac | Bonneville | With OE 11" Rotor Spindles | Disc | Drum | Front Kit | 1, 2, 3, 7, 4, 5, 6 | |
| 1979 | Pontiac | Catalina | With OE 11" Rotor Spindles | Disc | Drum | Front Kit | 1, 2, 3, 7, 4, 5, 6 | |
| 1979 | Pontiac | Firebird | Disc Brake Spindle | Disc | Drum | Front Kit | 1, 2, 3, 7, 4, 5, 6 | |
| 1979 | Pontiac | Phoenix | Disc Brake Spindle | Disc | Drum | Front Kit | 1, 2, 3, 7, 4, 5, 6 | |
| 1980 | Buick | Estate Wagon | With OE 11" Rotor Spindles | Disc | Drum | Front Kit | 1, 2, 3, 7, 4, 5, 6 | |
| 1980 | Buick | LeSabre | With OE 11" Rotor Spindles | Disc | Drum | Front Kit | 1, 2, 3, 7, 4, 5, 6 | |
| 1980 | Chevrolet | Camaro | Disc Brake Spindle | Disc | Drum | Front Kit | 1, 2, 3, 7, 4, 5, 6 | |
| 1980 | Chevrolet | Caprice | With OE 11" Rotor Spindles | Disc | Drum | Front Kit | 1, 2, 3, 7, 4, 5, 6 | |
| 1980 | Chevrolet | Impala | With OE 11" Rotor Spindles | Disc | Drum | Front Kit | 1, 2, 3, 7, 4, 5, 6 | |
| 1980-1985 | Oldsmobile | Custom Cruiser | With OE 11" Rotor Spindles | Disc | Drum | Front Kit | 1, 2, 3, 4, 5, 6 | |
| 1980-1985 | Oldsmobile | Delta 88 | With OE 11" Rotor Spindles | Disc | Drum | Front Kit | 1, 2, 3, 4, 5, 6 | |
| 1980-1981 | Pontiac | Bonneville | With OE 11" Rotor Spindles | Disc | Drum | Front Kit | 1, 2, 3, 4, 5, 6 | |
| 1980-1981 | Pontiac | Catalina | With OE 11" Rotor Spindles | Disc | Drum | Front Kit | 1, 2, 3, 4, 5, 6 | |
| 1980-1981 | Pontiac | Firebird | Disc Brake Spindle | Disc | Drum | Front Kit | 1, 2, 3, 4, 5, 6 | |
| 1980-1982 | Pontiac | Parisienne | With OE 11" Rotor Spindles | Disc | Drum | Front Kit | 1, 2, 3, 5, 6 | |
| 1983-1986 | Pontiac | Parisienne | With OE 11" Rotor Spindles | Disc | Drum | Front Kit | 1, 2, 3, 4, 5, 6 | |
| 1984-1985 | Buick | Estate Wagon | Estate Wagon | With OE 11" Rotor Spindles | Disc | Drum | Front Kit | 1, 2, 3, 4, 5, 6 |
Application Notes
- Front kits fit 11" rotor spindles only.
- Requires modifications to original spindle
- Kit may fit some 15" wheels. Check wheel clearance diagram in kit installation instructions before purchase.
- This front brake kit contains no parking-brake mechanism. Parking-brake cable selection belongs to the separate rear brake installation.
- Line kit included (manufacturer): None
- Front line-kit reference: 220-10509
- Universal Flexline kits available: 220-7056 (14"), 220-7699 (16") or 220-8307 (18"). Choose correct length for your application.