Raybestos 2051R Brake Drum - Rear

Brand Raybestos 2051R
Position Rear
Depth 2.140
Depth 54.350
Nominal Drum Diameter 0.351
Nominal Drum Diameter 8.900
Outer Cooling Fins Yes
Outside Diameter 0.429
Outside Diameter 10.900
Stud/Lug Hole Diameter 0.554
Stud/Lug Hole Diameter 14.050
Stud/Lug Hole Quantity 5
Product line R-Line
Fits Chevrolet, Pontiac, Oldsmobile, Buick, and Cadillac · 226 vehicles

Cooling fins. Help dissipate heat for more consistent braking performance.

Brake drum. Built for dependable drum brake service and stopping power.

Cross-references AMS Automotive 4939, AMS Automotive 6173 and AP Exhaust 8939 for the same application. See all 78.

$75.33Free shipping
Out of stock
Step 1 — Confirm fitment
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Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Brake Drums are typically replaced in pairs, axle by axle.
Order total $75.33
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

Rear Brake Drum for GM Applications

Raybestos R-Line 2051R is a rear brake drum built for a wide range of Chevrolet, Buick, Pontiac, Oldsmobile, and Cadillac applications. With a 10.900-inch outside diameter, 2.140-inch depth, and 5-lug mounting, it matches the dimensional requirements used on many rear drum brake setups.

For shoppers searching for a rear brake drum for a 2004-2005 Chevrolet Classic, 1997-2004 Chevrolet Malibu, or 1999-2005 Pontiac Grand Am, this Raybestos brake drum provides the fitment and sizing needed for direct replacement service.

Key Features

  • Raybestos R-Line brake drum, part number 2051R
  • 10.900-inch outside diameter and 2.140-inch depth
  • 8.900-inch nominal drum diameter
  • 5 stud/lug holes with 14.050 mm lug hole diameter
  • Outer cooling fins for added heat management
  • Rear-position drum for select GM passenger cars and minivans

R-Line Product Line Details

Raybestos R-Line covers everyday replacement brake parts for routine service work. The 2051R follows that approach with OE-style dimensions and application-specific fitment for rear drum brake systems across multiple Buick, Chevrolet, Oldsmobile, Pontiac, and Cadillac models.

Detailed Description

Use the Raybestos 2051R when replacing a worn or damaged rear brake drum on vehicles such as the Buick Century, Buick Regal, Chevrolet Lumina, Pontiac Bonneville, and Oldsmobile Silhouette. The drum’s 10.900-inch outside diameter, 54.350 mm depth, and 5-lug pattern support proper brake shoe contact and drum-to-hub alignment on listed applications. This part cross-references DuraGo BD8939 and Centric Parts 122.62023 for the same application.

What It Helps Address

  • Brake pulsation caused by an out-of-round or worn drum
  • Reduced rear braking performance from excessive drum wear
  • Noise from scored or heat-damaged drum surfaces
  • Poor shoe contact on aging rear drum brake systems
  • Fitment issues when replacing a drum with the wrong diameter or depth

Installation Notes and Tips

Verify the vehicle’s rear brake configuration before ordering, especially on models with notes such as cast iron drum, finned drum, or specific brake-code requirements. Confirm outside diameter, depth, lug hole count, and lug hole diameter against the original drum before installation. For best service results, inspect brake shoes, wheel cylinders, and related rear brake components during replacement.

Quality Assurance

Raybestos is a long-established brake brand with broad aftermarket coverage, and the R-Line is positioned for standard replacement service across common passenger-car applications. The 2051R is built to match the listed fitment and dimensional requirements for rear drum brake service.

This part fits 226 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelSubmodelBody Type# DoorsDrive TypeLitersCylindersPositionNotes
2005ChevroletClassicRearR-Line
2005PontiacGrand AmRearR-Line
2005PontiacMontanaBaseRearR-Line
2004ChevroletClassicRearR-Line
2004ChevroletMalibuRearR-Line
2004OldsmobileAleroRearR-Line
2004OldsmobileSilhouetteRearR-Line
2004PontiacGrand AmRearR-Line
2004PontiacMontanaRearR-Line
2003BuickCenturyRearR-Line
2003BuickRegalRearR-Line
2003ChevroletMalibuRearR-Line
2003OldsmobileAleroRearR-Line
2003OldsmobileSilhouetteRearR-Line
2003PontiacGrand AmRearR-Line
2003PontiacMontanaRearR-Line
2002BuickCenturyRearR-Line
2002BuickRegalRearR-Line
2002ChevroletMalibuRearR-Line
2002OldsmobileSilhouetteRearR-Line
2002PontiacGrand AmRearR-Line
2002PontiacMontanaRearR-Line
2001BuickCenturyRearR-Line
2001ChevroletLuminaRearR-Line
2001ChevroletMalibuRearR-Line
2001OldsmobileSilhouetteRearR-Line
2001PontiacGrand AmRearR-Line
2001PontiacMontanaRearR-Line
2000BuickCenturyRearR-Line
2000ChevroletLuminaRearR-Line
2000ChevroletMalibuRearR-Line
2000OldsmobileSilhouetteRearR-Line
2000PontiacGrand AmRearR-Line
2000PontiacMontanaRearR-Line
1999BuickCenturyRearR-Line
1999BuickLeSabreRearR-Line
1999BuickRegalRearR-Line
1999ChevroletLuminaRearR-Line
1999ChevroletMalibuRearR-Line
1999ChevroletMonte CarloRearR-Line
1999Oldsmobile88RearR-Line
1999OldsmobileCutlassRearR-Line
1999OldsmobileLSSRearR-Line
1999OldsmobileSilhouetteRearR-Line
1999PontiacBonnevilleRearR-Line
1999PontiacGrand AmRearR-Line
1999PontiacMontanaRearR-Line
1999PontiacTrans SportRearR-Line
1998BuickCenturyRearR-Line
1998BuickLeSabreRearR-Line
1998ChevroletLuminaRearR-Line
1998ChevroletMalibuRearR-Line
1998ChevroletMonte CarloRearR-Line
1998Oldsmobile88RearR-Line
1998OldsmobileCutlassRearR-Line
1998OldsmobileLSSRearR-Line
1998OldsmobileRegencyRearR-Line
1998OldsmobileSilhouetteRearR-Line
1998PontiacBonnevilleRearR-Line
1998PontiacTrans SportRearR-Line
1997BuickCenturyRearR-Line
1997BuickLeSabreRearR-Line
1997ChevroletLuminaRearR-Line
1997ChevroletMalibuRearR-Line
1997ChevroletMonte CarloRearR-Line
1997Oldsmobile88RearR-Line
1997OldsmobileCutlassRearR-Line
1997OldsmobileLSSRearR-Line
1997OldsmobileRegencyRearR-Line
1997OldsmobileSilhouetteRearR-Line
1997PontiacBonnevilleRearR-Line
1997PontiacTrans SportRearR-Line
1996BuickCenturyRearR-Line
1996BuickLeSabreRearR-Line
1996BuickPark AvenueRearR-Line
1996ChevroletLuminaRearR-Line
1996ChevroletLumina APVRearwith Cast Iron Drum; R-Line
1996ChevroletMonte CarloRearR-Line
1996Oldsmobile88RearR-Line
1996Oldsmobile98RearR-Line
1996OldsmobileCutlass CieraRearR-Line
1996OldsmobileLSSRearR-Line
1996OldsmobileSilhouetteRearR-Line
1996PontiacBonnevilleRearR-Line
1996PontiacTrans SportRearR-Line
1995BuickCenturyRearR-Line
1995BuickLeSabreRearR-Line
1995BuickPark AvenueRearR-Line
1995ChevroletLuminaRearR-Line
1995ChevroletLumina APVRearwith Cast Iron Drum; R-Line
1995ChevroletMonte CarloRearR-Line
1995Oldsmobile88Rearwith 8-55/64 IN x 1-49/64 IN Brakes; with Cast Iron Drum; R-Line
1995Oldsmobile98RearR-Line
1995OldsmobileCutlass CieraRearR-Line
1995OldsmobileSilhouetteRearR-Line
1995PontiacBonnevilleRearwith Cast Iron Drum; R-Line
1995PontiacTrans SportRearR-Line
1994BuickCenturyRearR-Line
1994BuickLeSabreRearR-Line
1994BuickPark AvenueRearR-Line
1994ChevroletLumina APVRearwith Cast Iron Drum; R-Line
1994Oldsmobile88Rearwith 8-55/64 IN x 1-49/64 IN Brakes; with Cast Iron Drum; R-Line
1994Oldsmobile98Rearwith Cast Iron Drum; R-Line
1994OldsmobileCutlass CieraRearR-Line
1994OldsmobileSilhouetteRearR-Line
1994PontiacBonnevilleRearwith Cast Iron Drum; R-Line
1994PontiacTrans SportRearR-Line
1993BuickCenturyRearR-Line
1993BuickLeSabreSedan4 DoorRearwith Cast Iron Drum; R-Line
1993BuickPark AvenueRearR-Line
1993Cadillac60 SpecialFWDRearw/ 225mm X 45mm Brakes; GM Brake Code J41,JM4; R-Line
1993CadillacCommercial Chassis4.9LV8Rearwith 8.86 IN x 1.77 IN Brakes; R-Line
1993CadillacDeVilleRearw/ 225mm X 45mm Brakes; R-Line
1993ChevroletLumina APVRearwith Cast Iron Drum; R-Line
1993Oldsmobile88Rearwith 8-55/64 IN x 1-49/64 IN Brakes; with Cast Iron Drum; R-Line
1993Oldsmobile98Rearwith Cast Iron Drum; R-Line
1993OldsmobileCutlass CieraRearR-Line
1993OldsmobileCutlass CruiserRearR-Line
1993OldsmobileSilhouetteRearR-Line
1993PontiacBonnevilleRearwith Cast Iron Drum; R-Line
1993PontiacTrans SportRearR-Line
1992BuickCenturySedan4 DoorRearwith Finned Drum; R-Line
1992BuickCenturyWagon4 DoorRearR-Line
1992BuickCenturyCoupe2 DoorRearwith Finned Drum; R-Line
1992BuickLeSabreSedan4 DoorRearwith Cast Iron Drum; R-Line
1992BuickPark AvenueRearR-Line
1992CadillacCommercial Chassis4.9LV8Rearwith 8.86 IN x 1.77 IN Brakes; R-Line
1992CadillacDeVilleRearw/ 225mm X 45mm Brakes; R-Line
1992CadillacFleetwoodFWDRearw/ 225mm X 45mm Brakes; GM Brake Code J41,JM4; R-Line
1992ChevroletLumina APVRearwith Cast Iron Drum; R-Line
1992Oldsmobile88Rearwith 8-55/64 IN x 1-49/64 IN Brakes; with Cast Iron Drum; R-Line
1992Oldsmobile98Rearwith Cast Iron Drum; R-Line
1992OldsmobileCutlass CieraSedan4 DoorRearwith Finned Drum; R-Line
1992OldsmobileCutlass CieraWagon4 DoorRearR-Line
1992OldsmobileCutlass CieraCoupe2 DoorRearwith Finned Drum; R-Line
1992OldsmobileSilhouetteRearR-Line
1992PontiacBonnevilleRearwith Cast Iron Drum; R-Line
1992PontiacTrans SportRearR-Line
1991BuickCenturyWagon4 DoorRearR-Line
1991BuickLeSabreRearwith Cast Iron Drum; R-Line
1991BuickPark AvenueRearwith Cast Iron Drum; R-Line
1991CadillacCommercial ChassisRearwith 8.86 IN x 1.77 IN Brakes; R-Line
1991CadillacDeVilleRearw/ 225mm X 45mm Brakes; R-Line
1991CadillacFleetwoodFWDRearw/ 225mm X 45mm Brakes; GM Brake Code J41,JM4; R-Line
1991ChevroletLumina APVRearwith Cast Iron Drum; R-Line
1991Oldsmobile98Rearwith Cast Iron Drum; R-Line
1991OldsmobileCutlass CieraWagon4 DoorRearR-Line
1991OldsmobileDelta 88Rearwith 8-55/64 IN x 1-49/64 IN Brakes; with Cast Iron Drum; R-Line
1991OldsmobileSilhouetteRearR-Line
1991Pontiac6000Wagon4 DoorRearR-Line
1991PontiacBonnevilleRearwith Cast Iron Drum; R-Line
1991PontiacTrans SportRearR-Line
1990BuickCenturyWagon4 DoorRearR-Line
1990BuickLeSabreSedanRearwith Cast Iron Drum; R-Line
1990BuickLeSabreCoupeRearwith Cast Iron Drum; R-Line
1990CadillacCommercial ChassisRearwith 8.86 IN x 1.77 IN Brakes; R-Line
1990CadillacDeVilleRearw/ 225mm X 45mm Brakes; R-Line
1990CadillacFleetwoodFWDRearw/ 225mm X 45mm Brakes; GM Brake Code J41,JM4; R-Line
1990ChevroletCelebrityWagon4 DoorRearR-Line
1990ChevroletLumina APVRearwith Cast Iron Drum; R-Line
1990Oldsmobile98Rearwith Cast Iron Drum; R-Line
1990OldsmobileCutlass CruiserWagon4 DoorRearR-Line
1990OldsmobileDelta 88Rearwith 8-55/64 IN x 1-49/64 IN Brakes; with Cast Iron Drum; R-Line
1990OldsmobileSilhouetteRearR-Line
1990Pontiac6000Wagon4 DoorRearR-Line
1990PontiacBonnevilleRearwith Cast Iron Drum; R-Line
1990PontiacTrans SportRearR-Line
1989BuickCenturyWagon4 DoorRearR-Line
1989BuickLeSabreSedanRearwith Cast Iron Drum; R-Line
1989BuickLeSabreCoupeRearwith Cast Iron Drum; R-Line
1989CadillacCommercial ChassisRearR-Line
1989CadillacDeVilleRearw/ 225mm X 45mm Brakes; with Cast Iron Drum; R-Line
1989CadillacFleetwoodFWDRearwith 8-55/64 IN x 1-49/64 IN Brakes; with Cast Iron Drum; R-Line
1989ChevroletCelebrityWagon4 DoorRearR-Line
1989Oldsmobile98Rearwith Cast Iron Drum; R-Line
1989OldsmobileCutlass CruiserWagon4 DoorRearR-Line
1989OldsmobileDelta 88Rearwith 8-55/64 IN x 1-49/64 IN Brakes; with Cast Iron Drum; R-Line
1989Pontiac6000Wagon4 DoorRearR-Line
1989PontiacBonnevilleRearwith Cast Iron Drum; R-Line
1988BuickLeSabreSedanRearwith Cast Iron Drum; R-Line
1988BuickLeSabreCoupeRearwith Cast Iron Drum; R-Line
1988CadillacCommercial ChassisRearR-Line
1988CadillacDeVilleRearw/ 225mm X 45mm Brakes; with Cast Iron Drum; R-Line
1988CadillacFleetwoodFWDRearwith 8-55/64 IN x 1-49/64 IN Brakes; with Cast Iron Drum; R-Line
1988ChevroletCelebrityWagon4 DoorRearR-Line
1988Oldsmobile98Rearwith Cast Iron Drum; R-Line
1988OldsmobileCutlass CruiserWagon4 DoorRearR-Line
1988OldsmobileDelta 88Rearwith 8-55/64 IN x 1-49/64 IN Brakes; with Cast Iron Drum; R-Line
1988Pontiac6000Wagon4 DoorRearR-Line
1988PontiacBonnevilleRearwith Cast Iron Drum; R-Line
1987BuickCenturyWagon4 DoorRearR-Line
1987BuickLeSabreSedanRearwith Cast Iron Drum; R-Line
1987BuickLeSabreCoupeRearwith Cast Iron Drum; R-Line
1987CadillacCommercial ChassisRearR-Line
1987CadillacDeVilleRearw/ 225mm X 45mm Brakes; with Cast Iron Drum; R-Line
1987CadillacFleetwoodFWDRearwith 8-55/64 IN x 1-49/64 IN Brakes; with Cast Iron Drum; R-Line
1987ChevroletCelebrityWagon4 DoorRearR-Line
1987Oldsmobile98Rearwith Cast Iron Drum; R-Line
1987OldsmobileCutlass CruiserWagonRearReplace in Pairs; R-Line
1987OldsmobileDelta 88Rearwith 8-55/64 IN x 1-49/64 IN Brakes; with Cast Iron Drum; R-Line
1987Pontiac6000Wagon4 DoorRearR-Line
1987PontiacBonnevilleRearwith Cast Iron Drum; R-Line
1986BuickCenturyWagon4 DoorRearR-Line
1986BuickLeSabreSedanRearwith Cast Iron Drum; R-Line
1986BuickLeSabreCoupeRearwith Cast Iron Drum; R-Line
1986CadillacCommercial ChassisRearR-Line
1986CadillacDeVilleRearw/ 225mm X 45mm Brakes; with Cast Iron Drum; R-Line
1986CadillacFleetwoodFWDRearwith 8-55/64 IN x 1-49/64 IN Brakes; with Cast Iron Drum; R-Line
1986ChevroletCelebrityWagon4 DoorRearR-Line
1986Oldsmobile98Rearwith Cast Iron Drum; R-Line
1986OldsmobileCutlass CieraWagon4 DoorRearR-Line
1986OldsmobileDelta 88Rearwith 8-55/64 IN x 1-49/64 IN Brakes; with Cast Iron Drum; R-Line
1986Pontiac6000Wagon4 DoorRearR-Line
1985BuickCenturyWagon4 DoorRearR-Line
1985CadillacCommercial ChassisRearR-Line
1985CadillacDeVilleRearw/ 225mm X 45mm Brakes; with Cast Iron Drum; R-Line
1985CadillacFleetwoodFWDRearwith 8-55/64 IN x 1-49/64 IN Brakes; with Cast Iron Drum; R-Line
1985ChevroletCelebrityWagon4 DoorRearR-Line
1985Oldsmobile98Rearwith Cast Iron Drum; R-Line
1985OldsmobileCutlass CieraWagon4 DoorRearR-Line
1985Pontiac6000Wagon4 DoorRearR-Line
1984BuickCenturyWagon4 DoorRearR-Line
1984ChevroletCelebrityWagon4 DoorRearR-Line
1984OldsmobileCutlass CieraWagon4 DoorRearR-Line
1984Pontiac6000Wagon4 DoorRearR-Line
1970ChevroletMonte CarloRearw/ 225mm X 45mm Brakes; Cut Out Axle Cover; Non-Flared Center Hole; with Pontiac Axle; R-Line
Directly replaces or cross-references 78 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
AMS Automotive — 4939AMS Automotive — 6173AP Exhaust — 8939Centric Parts — 122.62023Centric Parts — 123.62023DuraGo — BD8939FEL-PRO — 61776Gates — 1190Karlyn — 25033LIQUI MOLY — 2051Raybestos Brakes — 2051RRemy — 2301514.7900.1016-893952-6177652-12548263-93-57088-36023177-331177-382177-384177-385177-390177-406177-434177-435177-436177-447788-3602319422051DGS112051125482140451201392212291-C34504039357052503166608568420546020511033865818020817180208221802085418021289180214191802214818022149180228211802564718029790180422832551889288957254AD8223AD8223EAX8939BD190BD1476BD61776BD61776BD125482BD89390BD125482BD125551C10-954D2051D93570DL8939E-8362G2051R448362R44140451SB2051X21668YH6085YH140451