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Raybestos 56851R Disc Brake Rotor - RearOE Quality 60-Day Returns
Part #: 56851R

Raybestos 56851R Disc Brake Rotor - Rear

R-Line, Rear
63 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
R-Line, Rear
Fitment: Buick, Pontiac, Oldsmobile, and Cadillac, LeSabre, Park Avenue, Bonneville, Aurora, and Eldorado
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Overview of Raybestos R-Line Disc Brake Rotor 56851R

The Raybestos R-Line Disc Brake Rotor 56851R is engineered for reliable braking performance on select Buick, Cadillac, Oldsmobile, and Pontiac vehicles. Designed as a solid, conventional rotor, it meets the specifications required for models such as the Allante, Aurora, Bonneville, DeVille, Eldorado, LeSabre, Park Avenue, Riviera, Seville, and Toronado.

  • Solid disc brake rotor with conventional design
  • Outside diameter: 11.060 inches (280.9 mm)
  • Nominal thickness: 0.435 inches (11.05 mm)
  • Discard thickness: 0.354 inches (9.0 mm)
  • Overall height: 1.520 inches (38.6 mm)
  • Mounting bolt hole quantity: 5 with 118 mm bolt circle diameter
  • Center hole diameter: 2.785 inches (70.75 mm)
  • Compatible with multiple GM luxury and performance models

Raybestos R-Line Product Line Details

The R-Line by Raybestos focuses on delivering dependable brake components that meet or exceed OEM specifications. This product line emphasizes durability and consistent performance, making it suitable for drivers who require reliable stopping power on their Buick, Cadillac, Oldsmobile, or Pontiac vehicles. The 56851R rotor is part of this line, offering a solid rotor design that supports conventional braking systems.

Technical Specifications and Features

This disc brake rotor features a solid construction with an outside diameter of 11.060 inches, ensuring proper fitment and heat dissipation for the specified vehicle models. The nominal thickness of 0.435 inches provides sufficient material for effective braking, while the discard thickness of 0.354 inches indicates the minimum safe thickness before replacement is necessary. The rotor’s overall height is 1.520 inches, and it includes five mounting bolt holes arranged on a 118 mm bolt circle diameter, compatible with the stud/lug hole quantity of five. The center hole diameter measures 2.785 inches, ensuring precise alignment during installation.

Applications and Problem Solving

  • Replacement for worn or warped rotors on Buick Allante and Cadillac DeVille
  • Restores braking performance on Pontiac Bonneville and Oldsmobile Aurora
  • Addresses rotor thickness below discard limits to maintain safety
  • Eliminates brake pulsation caused by uneven rotor surfaces
  • Compatible upgrade for routine maintenance on Seville and Riviera models

Installation Notes and Tips

  • Verify rotor thickness before installation to ensure it meets nominal specifications
  • Clean mounting surfaces to prevent rotor runout and vibration
  • Torque mounting bolts to manufacturer specifications for secure fitment
  • Inspect brake pads and replace if worn to optimize rotor performance
  • Follow vehicle-specific service manual for brake system procedures

Quality Assurance and Warranty

Raybestos R-Line rotors are manufactured to meet OEM standards for fit, form, and function. The 56851R rotor undergoes rigorous quality control to ensure consistent performance and durability. While specific warranty details are not provided here, Raybestos typically offers coverage against defects in materials and workmanship. Consult product documentation or Raybestos directly for warranty terms related to this part number.

BrandRaybestos
Part Number56851R
PositionR-Line, Rear
Center Hole Diameter2.785
Center Hole Diameter70.750
Conventional Or Drum-In-Hat Type RotorConventional
Discard Thickness0.354
Discard Thickness9.000
Mounting Bolt Hole Circle Diameter4.646
Mounting Bolt Hole Circle Diameter118.000
Mounting Bolt Hole Diameter4.646
Mounting Bolt Hole Diameter118.000
Mounting Bolt Hole Quantity5
Nominal Thickness0.435
Nominal Thickness11.050
Outside Diameter11.060
Outside Diameter280.900
Overall Height1.520
Overall Height38.600
Solid Or Vented Type RotorSolid
Stud/Lug Hole Quantity5

This part fits 63 vehicles. Search below:

YearMakeModelSubmodelBody TypePositionNotes
2005BuickLeSabreRearR-Line
2005BuickPark AvenueBaseRearR-Line
2005PontiacBonnevilleSERearR-Line
2005PontiacBonnevilleSLERearR-Line
2004BuickLeSabreRearR-Line
2004BuickPark AvenueBaseRearR-Line
2004PontiacBonnevilleSERearR-Line
2004PontiacBonnevilleSLERearR-Line
2003BuickLeSabreRearR-Line
2003BuickPark AvenueBaseRearR-Line
2003OldsmobileAuroraRearR-Line
2003PontiacBonnevilleRearR-Line
2002BuickLeSabreRearR-Line
2002BuickPark AvenueRearR-Line
2002CadillacEldoradoRearR-Line
2002OldsmobileAuroraRearR-Line
2002PontiacBonnevilleRearR-Line
2001BuickLeSabreRearR-Line
2001BuickPark AvenueRearR-Line
2001CadillacEldoradoRearR-Line
2001OldsmobileAuroraRearR-Line
2001PontiacBonnevilleRearR-Line
2000BuickLeSabreRearR-Line
2000BuickPark AvenueRearR-Line
2000CadillacEldoradoRearReplaces 1056851; Raybestos R-Line
2000PontiacBonnevilleRearR-Line
1999BuickPark AvenueRearReplaces 1056851; Raybestos R-Line
1999BuickRivieraRearReplaces 1056851; Raybestos R-Line
1999CadillacDeVilleSedanRearReplaces 1056851; Raybestos R-Line
1999CadillacEldoradoRearReplaces 1056851; Raybestos R-Line
1999OldsmobileAuroraRearReplaces 1056851; Raybestos R-Line
1998BuickPark AvenueRearReplaces 1056851; Raybestos R-Line
1998BuickRivieraRearReplaces 1056851; Raybestos R-Line
1998CadillacDeVilleSedanRearReplaces 1056851; Raybestos R-Line
1998CadillacEldoradoRearReplaces 1056851; Raybestos R-Line
1998OldsmobileAuroraRearReplaces 1056851; Raybestos R-Line
1997BuickPark AvenueRearReplaces 1056851; Raybestos R-Line
1997BuickRivieraRearReplaces 1056851; Raybestos R-Line
1997CadillacDeVilleRearReplaces 1056851; Raybestos R-Line
1997CadillacEldoradoRearReplaces 1056851; Raybestos R-Line
1997CadillacSevilleRearReplaces 1056851; Raybestos R-Line
1997OldsmobileAuroraRearReplaces 1056851; Raybestos R-Line
1996BuickRivieraRearReplaces 1056851; Raybestos R-Line
1996CadillacDeVilleRearReplaces 1056851; Raybestos R-Line
1996CadillacEldoradoRearReplaces 1056851; Raybestos R-Line
1996CadillacSevilleRearReplaces 1056851; Raybestos R-Line
1996OldsmobileAuroraRearReplaces 1056851; Raybestos R-Line
1995BuickRivieraRearReplaces 1056851; Raybestos R-Line
1995CadillacDeVilleRearReplaces 1056851; Raybestos R-Line
1995CadillacEldoradoRearReplaces 1056851; Raybestos R-Line
1995CadillacSevilleRearReplaces 1056851; Raybestos R-Line
1995OldsmobileAuroraRearReplaces 1056851; Raybestos R-Line
1994CadillacDeVilleRearReplaces 1056851; Raybestos R-Line
1994CadillacEldoradoRearReplaces 1056851; Raybestos R-Line
1994CadillacSevilleRearReplaces 1056851; Raybestos R-Line
1993BuickRivieraRearReplaces 1056851; Raybestos R-Line
1993CadillacAllanteRearReplaces 1056851; Raybestos R-Line
1993CadillacEldoradoRearReplaces 1056851; Raybestos R-Line
1993CadillacSevilleRearReplaces 1056851; Raybestos R-Line
1992BuickRivieraRearReplaces 1056851; Raybestos R-Line
1992CadillacEldoradoRearReplaces 1056851; Raybestos R-Line
1992CadillacSevilleRearReplaces 1056851; Raybestos R-Line
1992OldsmobileToronadoRearReplaces 1056851; Raybestos R-Line

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

08.8861.1008.8861.1108.8861.8510111414-55065145266177-867180224011802248018060236211267-C250105492711232551149312552-1257025506555065DG5685156851FZN56851R56851RGS661344686801789-3604581-12570289-36045AR8245EVCAR8267AR8267EAX55065BD125702BD125702EBR55065BR5506502CW11710N1000130703APOPS125702Q4104RBR55065X51317YH1344YH141792PYH145266

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.

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