Home› Brake > Drums and Rotors› Raybestos 56631R Disc Brake Rotor - Front
Raybestos 56631R Disc Brake Rotor - FrontOE Quality 60-Day Returns
Part #: 56631R

Raybestos 56631R Disc Brake Rotor - Front

R-Line, Front
70 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$58.10Free Shipping
Free ShippingNo Cost to Continental U.S.
Free Returns*Wrong fit? No cost
60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
R-Line, Front
Fitment: Buick, Chevrolet, Pontiac, and Oldsmobile, Century, LeSabre, Venture, Bonneville, Montana, Regal, Silhouette, Grand Prix, Intrigue, 88, LSS, Trans Sport, and Regency
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST
Not what you need? See all Disc Brake Rotor options

Overview of Raybestos R-Line Disc Brake Rotor 56631R

The Raybestos R-Line Disc Brake Rotor 56631R is engineered for reliable braking performance on select Buick, Oldsmobile, and Pontiac vehicles. Designed as a vented, conventional rotor, it offers consistent heat dissipation and durability for models such as the Buick LeSabre and Pontiac Grand Prix.

  • Vented disc brake rotor for improved cooling
  • Overall diameter of 10.94 inches (277.9 mm)
  • Nominal thickness of 1.270 inches (32.25 mm)
  • Discard thickness at 1.208 inches (30.7 mm)
  • Five mounting bolt holes with 118 mm bolt circle diameter
  • Center hole diameter of 2.782 inches (70.65 mm)
  • Compatible with multiple Buick, Oldsmobile, and Pontiac models

Raybestos R-Line Product Line Details

The R-Line by Raybestos focuses on delivering dependable replacement brake components that meet or exceed OEM specifications. This product line emphasizes quality materials and precise manufacturing tolerances, ensuring that the 56631R disc brake rotor maintains consistent thickness and structural integrity for safe braking performance on compatible vehicles.

Technical Specifications and Compatibility

This vented disc brake rotor features an overall height of 2.05 inches (52.05 mm) and is designed with five mounting bolt holes arranged on a 118 mm bolt circle diameter. The rotor’s nominal thickness is 1.270 inches (32.25 mm), with a discard thickness of 1.208 inches (30.7 mm), indicating when replacement is necessary to maintain braking efficiency. The center hole diameter measures 2.782 inches (70.65 mm), ensuring proper fitment on specified vehicle hubs.

Applications and Problem Solving

  • Replacement for worn or warped rotors on Buick LeSabre and Pontiac Grand Prix
  • Addresses brake pulsation caused by uneven rotor thickness
  • Restores braking performance on Oldsmobile Intrigue and Buick Regal
  • Prevents overheating with vented rotor design for improved heat dissipation
  • Compatible with vehicles requiring a 5-lug, 118 mm bolt circle rotor

Installation Notes and Tips

  • Ensure rotor thickness is above discard thickness before installation
  • Clean mounting surface and hub to prevent rotor runout
  • Torque mounting bolts to manufacturer specifications for secure fit
  • Inspect brake pads and hardware during rotor replacement
  • Use proper tools to avoid damage to rotor surface

Quality Assurance and Warranty

Raybestos R-Line rotors are manufactured to meet strict quality standards, providing consistent performance and durability. While specific warranty details may vary, Raybestos typically offers coverage against defects in materials and workmanship. Always verify warranty terms with the supplier or manufacturer documentation.

BrandRaybestos
Part Number56631R
PositionR-Line, Front
Center Hole Diameter2.782
Center Hole Diameter70.650
Conventional Or Drum-In-Hat Type RotorConventional
Discard Thickness1.208
Discard Thickness30.700
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 Thickness1.270
Nominal Thickness32.250
Outside Diameter10.940
Outside Diameter277.900
Overall Height2.050
Overall Height52.050
Solid Or Vented Type RotorVented
Stud/Lug Hole Quantity5

This part fits 70 vehicles. Search below:

YearMakeModelSubmodelDrive TypePositionNotes
2005BuickCenturyFrontR-Line
2005BuickLeSabreFrontCompatible with vehicles equipped with 15-inch wheels.; R-Line
2005PontiacBonnevilleSEFrontR-Line
2005PontiacMontanaBaseFWDFrontR-Line
2004BuickCenturyFrontR-Line
2004BuickLeSabreFrontCompatible with vehicles equipped with 15-inch wheels.; R-Line
2004BuickRegalFrontR-Line
2004OldsmobileSilhouetteFWDFrontR-Line
2004PontiacBonnevilleSEFrontR-Line
2004PontiacMontanaFWDFrontR-Line
2003BuickCenturyFrontR-Line
2003BuickLeSabreFrontCompatible with vehicles equipped with 15-inch wheels.; R-Line
2003BuickRegalFrontR-Line
2003OldsmobileSilhouetteFWDFrontR-Line
2003PontiacBonnevilleSEFrontR-Line
2003PontiacGrand PrixFrontR-Line
2003PontiacMontanaFWDFrontR-Line
2002BuickCenturyFrontR-Line
2002BuickLeSabreFrontCompatible with vehicles equipped with 15-inch wheels.; R-Line
2002BuickRegalFrontR-Line
2002OldsmobileIntrigueFrontR-Line
2002OldsmobileSilhouetteFWDFrontR-Line
2002PontiacBonnevilleSEFrontR-Line
2002PontiacGrand PrixFrontR-Line
2002PontiacMontanaFWDFrontR-Line
2001BuickCenturyFrontR-Line
2001BuickLeSabreFrontCompatible with vehicles equipped with 15-inch wheels.; R-Line
2001BuickRegalFrontR-Line
2001OldsmobileIntrigueFrontR-Line
2001OldsmobileSilhouetteFrontR-Line
2001PontiacBonnevilleSEFrontR-Line
2001PontiacGrand PrixFrontR-Line
2001PontiacMontanaFrontR-Line
2000BuickCenturyFrontR-Line
2000BuickLeSabreFrontCompatible with vehicles equipped with 15-inch wheels.; R-Line
2000BuickRegalFrontR-Line
2000OldsmobileIntrigueFrontR-Line
2000OldsmobileSilhouetteFrontR-Line
2000PontiacBonnevilleSEFrontR-Line
2000PontiacGrand PrixFrontR-Line
2000PontiacMontanaFrontR-Line
1999BuickCenturyFrontR-Line
1999BuickLeSabreFrontR-Line
1999BuickRegalFrontR-Line
1999BuickRivieraFrontReplaces 1056631; Raybestos R-Line
1999Oldsmobile88FrontR-Line
1999OldsmobileIntrigueFrontwith 10.94 IN Diameter Rotor; R-Line
1999OldsmobileLSSFrontR-Line
1999OldsmobileSilhouetteFrontR-Line
1999PontiacBonnevilleFrontR-Line
1999PontiacGrand PrixFrontR-Line
1999PontiacMontanaFrontR-Line
1999PontiacTrans SportFrontR-Line
1998BuickCenturyFrontR-Line
1998BuickLeSabreFrontR-Line
1998BuickRegalFrontR-Line
1998Oldsmobile88FrontR-Line
1998OldsmobileIntrigueFrontwith 10.94 IN Diameter Rotor; R-Line
1998OldsmobileLSSFrontR-Line
1998OldsmobileRegencyFrontR-Line
1998OldsmobileSilhouetteFrontR-Line
1998PontiacBonnevilleFrontR-Line
1998PontiacGrand PrixFrontR-Line
1998PontiacTrans SportFrontR-Line
1997BuickCenturyFrontR-Line
1997BuickRegalFrontR-Line
1997OldsmobileRegencyFrontReplaces 1056631; Raybestos R-Line
1997OldsmobileSilhouetteFrontR-Line
1997PontiacGrand PrixFrontR-Line
1997PontiacTrans SportFrontR-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:

09.7376.1009.7376.11101704120.62057120.62057CRY121.62057125.62057125.62057CRY125507126.62057CSL126.62057CSR126.62057SL126.62057SR127.62057CL127.62057CR127.62057L127.62057R128.62057CL128.62057CR128.62057L128.62057R14-55036145250177-8331801809618021359180602331917504920-550362055036210731-C227.62057L227.62057R250105292566627007320.62057320.62057F321.62057325277493130515652-1255075503655036155036B55036DG55036DL551125663156631FZN56631R56631RGS5931306620018684802789-36057805663181-12550789-36057AR8257AR8257EAX55036BD125507BD125507EBDC4797BR2017BR55036BR5503602BR55528CW32110DL55036N1000154810BRCP125507PS125507Q4003RB502RBR55036X51187YH145250YH145250CYH145250PYH2330

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

Related Articles