Raybestos 56022 Disc Brake Rotor and Hub Assembly - Front
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Raybestos
 Specialty - Truck

Raybestos 56022 Disc Brake Rotor and Hub Assembly - Front

Brand Raybestos 56022
Position Front
Discard Thickness 1.465
Discard Thickness 37.200
Mounting Bolt Hole Circle Diameter 6.500
Mounting Bolt Hole Circle Diameter 165.100
Mounting Bolt Hole Diameter 0.600
Mounting Bolt Hole Diameter 15.250
Mounting Bolt Hole Quantity 8
Nominal Thickness 1.535
Nominal Thickness 39.000
Stud/Lug Hole Quantity 8
Product line Specialty - Truck
Fits Chevrolet and GMC · 22 vehicles

Rotor and hub assembly. Combines two components into one service part for simpler replacement.

Eight-bolt pattern. Built with an 8-hole mounting circle for secure attachment.

Truck specialty line. Part of Raybestos' specialty truck product range.

Cross-references Continental 56022, Dorman - HELP 55033 and DuraGo BR55033 for the same application. See all 37.

$307.51Free shipping
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Step 2 — Quantity
Disc Brake Rotor and Hub Assemblys are typically replaced in pairs, axle by axle.
Order total $307.51
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Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Disc Brake Rotor and Hub Assembly options

Raybestos 56022 Front Disc Brake Rotor and Hub

Raybestos 56022 is a front disc brake rotor and hub assembly for heavy-duty truck applications that use an 8-lug pattern and a 6.500-inch bolt circle. Built to match the listed nominal thickness and discard thickness specifications, it supports proper brake service on Chevrolet P30 and GMC P3500 front axle setups.

Part of the Raybestos Specialty - Truck line, this rotor and hub assembly is aimed at demanding commercial-style applications where fitment details matter. If you are servicing a Chevrolet P30 or GMC P3500 with a 13-inch x 3-1/2-inch brake drum, 5000 lb I-beam front axle, and dual rear wheels, Raybestos 56022 provides the specified front-end brake hardware match.

  • Front disc brake rotor and hub assembly
  • Nominal thickness: 1.535 in. / 39.000 mm
  • Discard thickness: 1.465 in. / 37.200 mm
  • 8 mounting bolt holes
  • Mounting bolt hole circle diameter: 6.500 in. / 165.100 mm
  • Mounting bolt hole diameter: 0.600 in. / 15.250 mm
  • 8 stud/lug holes
  • Raybestos Specialty - Truck application coverage

This Raybestos 56022 rotor and hub assembly is specified for front brake service on 1983-1994 Chevrolet P30 and 1985-1994 GMC P3500 models. It cross-references Dorman - HELP 55033 for the same application. The listed dimensions and bolt pattern details help ensure the rotor matches the vehicle’s hub and wheel mounting requirements during brake repair.

Common repair uses

  • Front brake rotor wear that has reached discard thickness
  • Brake pulsation related to rotor thickness variation
  • Hub and rotor replacement on 8-lug truck front axles
  • Brake service on Chevrolet P30 and GMC P3500 chassis applications
  • Restoring proper front brake geometry on dual rear wheel trucks

Installation notes and tips

Verify the vehicle’s front axle, brake drum size, and dual rear wheel configuration before ordering. Confirm the 8-bolt mounting pattern, 6.500-inch bolt circle diameter, and thickness specifications against the existing part before installation. For best results, inspect related brake components and clean all mounting surfaces during service.

Quality assurance

Raybestos Specialty - Truck parts are cataloged for specific truck brake applications and dimensional requirements. This part number is listed with direct fitment data for Chevrolet P30 and GMC P3500 front brake service.

Related reading

This part fits 22 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
1994ChevroletP30FrontFitment note: Fits vehicles with a 13" X 3 1/2" Brake Drum, 5000lb I-Beam Front Axle, and Dual Rear Wheels.; Specialty - Truck
1994GMCP3500FrontFitment note: Fits vehicles with a 13" X 3 1/2" Brake Drum, 5000lb I-Beam Front Axle, and Dual Rear Wheels.; Specialty - Truck
1993ChevroletP30FrontFitment note: Fits vehicles with a 13" X 3 1/2" Brake Drum, 5000lb I-Beam Front Axle, and Dual Rear Wheels.; Specialty - Truck
1993GMCP3500FrontFitment note: Fits vehicles with a 13" X 3 1/2" Brake Drum, 5000lb I-Beam Front Axle, and Dual Rear Wheels.; Specialty - Truck
1992ChevroletP30FrontFitment note: Fits vehicles with a 13" X 3 1/2" Brake Drum, 5000lb I-Beam Front Axle, and Dual Rear Wheels.; Specialty - Truck
1992GMCP3500FrontFitment note: Fits vehicles with a 13" X 3 1/2" Brake Drum, 5000lb I-Beam Front Axle, and Dual Rear Wheels.; Specialty - Truck
1991ChevroletP30FrontFitment note: Fits vehicles with a 13" X 3 1/2" Brake Drum, 5000lb I-Beam Front Axle, and Dual Rear Wheels.; Specialty - Truck
1991GMCP3500FrontFitment note: Fits vehicles with a 13" X 3 1/2" Brake Drum, 5000lb I-Beam Front Axle, and Dual Rear Wheels.; Specialty - Truck
1990ChevroletP30FrontCompatible with 5000lb I-Beam Front Axle, Dual Rear Wheels, and 13 IN x 3-1/2 IN Brakes.; Specialty - Truck
1990GMCP3500FrontCompatible with 5000lb I-Beam Front Axle, Dual Rear Wheels, and 13 IN x 3-1/2 IN Brakes.; Specialty - Truck
1989ChevroletP30FrontCompatible with 5000lb I-Beam Front Axle, Dual Rear Wheels, and 13 IN x 3-1/2 IN Brakes.; Specialty - Truck
1989GMCP3500FrontCompatible with 5000lb I-Beam Front Axle, Dual Rear Wheels, and 13 IN x 3-1/2 IN Brakes.; Specialty - Truck
1988ChevroletP30FrontCompatible with 5000lb I-Beam Front Axle, Dual Rear Wheels, and 13 IN x 3-1/2 IN Brakes.; Specialty - Truck
1988GMCP3500FrontCompatible with 5000lb I-Beam Front Axle, Dual Rear Wheels, and 13 IN x 3-1/2 IN Brakes.; Specialty - Truck
1987ChevroletP30FrontCompatible with 5000lb I-Beam Front Axle, Dual Rear Wheels, and 13 IN x 3-1/2 IN Brakes.; Specialty - Truck
1987GMCP3500FrontCompatible with 5000lb I-Beam Front Axle, Dual Rear Wheels, and 13 IN x 3-1/2 IN Brakes.; Specialty - Truck
1986ChevroletP30FrontCompatible with 5000lb I-Beam Front Axle, Dual Rear Wheels, and 13 IN x 3-1/2 IN Brakes.; Specialty - Truck
1986GMCP3500FrontCompatible with 5000lb I-Beam Front Axle, Dual Rear Wheels, and 13 IN x 3-1/2 IN Brakes.; Specialty - Truck
1985ChevroletP30FrontCompatible with 5000lb I-Beam Front Axle, Dual Rear Wheels, and 13 IN x 3-1/2 IN Brakes.; Specialty - Truck
1985GMCP3500FrontCompatible with 5000lb I-Beam Front Axle, Dual Rear Wheels, and 13 IN x 3-1/2 IN Brakes.; Specialty - Truck
1984ChevroletP30FrontCompatible with 5000lb I-Beam Front Axle, Dual Rear Wheels, and 13 IN x 3-1/2 IN Brakes.; Specialty - Truck
1983ChevroletP30FrontCompatible with 5000lb I-Beam Front Axle, Dual Rear Wheels, and 13 IN x 3-1/2 IN Brakes.; Specialty - Truck
Directly replaces or cross-references 37 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Continental — 56022Dorman - HELP — 55033DuraGo — BR55033Hayden — 5041Raybestos Brakes — 56022R09.8830.8589-44020120.66020121.66020177-808789-4402055972721956022RGS61846101702141508204870210365-C32535467170315594391AR8620AR8620EBD61846BR55351D4749D17628E-8454E12571025G16003Q4035R448454RB727X51062YH3113YH141130