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
2005ChevroletClassic——————RearR-Line
2005PontiacGrand Am——————RearR-Line
2005PontiacMontanaBase—————RearR-Line
2004ChevroletClassic——————RearR-Line
2004ChevroletMalibu——————RearR-Line
2004OldsmobileAlero——————RearR-Line
2004OldsmobileSilhouette——————RearR-Line
2004PontiacGrand Am——————RearR-Line
2004PontiacMontana——————RearR-Line
2003BuickCentury——————RearR-Line
2003BuickRegal——————RearR-Line
2003ChevroletMalibu——————RearR-Line
2003OldsmobileAlero——————RearR-Line
2003OldsmobileSilhouette——————RearR-Line
2003PontiacGrand Am——————RearR-Line
2003PontiacMontana——————RearR-Line
2002BuickCentury——————RearR-Line
2002BuickRegal——————RearR-Line
2002ChevroletMalibu——————RearR-Line
2002OldsmobileSilhouette——————RearR-Line
2002PontiacGrand Am——————RearR-Line
2002PontiacMontana——————RearR-Line
2001BuickCentury——————RearR-Line
2001ChevroletLumina——————RearR-Line
2001ChevroletMalibu——————RearR-Line
2001OldsmobileSilhouette——————RearR-Line
2001PontiacGrand Am——————RearR-Line
2001PontiacMontana——————RearR-Line
2000BuickCentury——————RearR-Line
2000ChevroletLumina——————RearR-Line
2000ChevroletMalibu——————RearR-Line
2000OldsmobileSilhouette——————RearR-Line
2000PontiacGrand Am——————RearR-Line
2000PontiacMontana——————RearR-Line
1999BuickCentury——————RearR-Line
1999BuickLeSabre——————RearR-Line
1999BuickRegal——————RearR-Line
1999ChevroletLumina——————RearR-Line
1999ChevroletMalibu——————RearR-Line
1999ChevroletMonte Carlo——————RearR-Line
1999Oldsmobile88——————RearR-Line
1999OldsmobileCutlass——————RearR-Line
1999OldsmobileLSS——————RearR-Line
1999OldsmobileSilhouette——————RearR-Line
1999PontiacBonneville——————RearR-Line
1999PontiacGrand Am——————RearR-Line
1999PontiacMontana——————RearR-Line
1999PontiacTrans Sport——————RearR-Line
1998BuickCentury——————RearR-Line
1998BuickLeSabre——————RearR-Line
1998ChevroletLumina——————RearR-Line
1998ChevroletMalibu——————RearR-Line
1998ChevroletMonte Carlo——————RearR-Line
1998Oldsmobile88——————RearR-Line
1998OldsmobileCutlass——————RearR-Line
1998OldsmobileLSS——————RearR-Line
1998OldsmobileRegency——————RearR-Line
1998OldsmobileSilhouette——————RearR-Line
1998PontiacBonneville——————RearR-Line
1998PontiacTrans Sport——————RearR-Line
1997BuickCentury——————RearR-Line
1997BuickLeSabre——————RearR-Line
1997ChevroletLumina——————RearR-Line
1997ChevroletMalibu——————RearR-Line
1997ChevroletMonte Carlo——————RearR-Line
1997Oldsmobile88——————RearR-Line
1997OldsmobileCutlass——————RearR-Line
1997OldsmobileLSS——————RearR-Line
1997OldsmobileRegency——————RearR-Line
1997OldsmobileSilhouette——————RearR-Line
1997PontiacBonneville——————RearR-Line
1997PontiacTrans Sport——————RearR-Line
1996BuickCentury——————RearR-Line
1996BuickLeSabre——————RearR-Line
1996BuickPark Avenue——————RearR-Line
1996ChevroletLumina——————RearR-Line
1996ChevroletLumina APV——————Rearwith Cast Iron Drum; R-Line
1996ChevroletMonte Carlo——————RearR-Line
1996Oldsmobile88——————RearR-Line
1996Oldsmobile98——————RearR-Line
1996OldsmobileCutlass Ciera——————RearR-Line
1996OldsmobileLSS——————RearR-Line
1996OldsmobileSilhouette——————RearR-Line
1996PontiacBonneville——————RearR-Line
1996PontiacTrans Sport——————RearR-Line
1995BuickCentury——————RearR-Line
1995BuickLeSabre——————RearR-Line
1995BuickPark Avenue——————RearR-Line
1995ChevroletLumina——————RearR-Line
1995ChevroletLumina APV——————Rearwith Cast Iron Drum; R-Line
1995ChevroletMonte Carlo——————RearR-Line
1995Oldsmobile88——————Rearwith 8-55/64 IN x 1-49/64 IN Brakes; with Cast Iron Drum; R-Line
1995Oldsmobile98——————RearR-Line
1995OldsmobileCutlass Ciera——————RearR-Line
1995OldsmobileSilhouette——————RearR-Line
1995PontiacBonneville——————Rearwith Cast Iron Drum; R-Line
1995PontiacTrans Sport——————RearR-Line
1994BuickCentury——————RearR-Line
1994BuickLeSabre——————RearR-Line
1994BuickPark Avenue——————RearR-Line
1994ChevroletLumina APV——————Rearwith Cast Iron Drum; R-Line
1994Oldsmobile88——————Rearwith 8-55/64 IN x 1-49/64 IN Brakes; with Cast Iron Drum; R-Line
1994Oldsmobile98——————Rearwith Cast Iron Drum; R-Line
1994OldsmobileCutlass Ciera——————RearR-Line
1994OldsmobileSilhouette——————RearR-Line
1994PontiacBonneville——————Rearwith Cast Iron Drum; R-Line
1994PontiacTrans Sport——————RearR-Line
1993BuickCentury——————RearR-Line
1993BuickLeSabre—Sedan4 Door———Rearwith Cast Iron Drum; R-Line
1993BuickPark Avenue——————RearR-Line
1993Cadillac60 Special———FWD——Rearw/ 225mm X 45mm Brakes; GM Brake Code J41,JM4; R-Line
1993CadillacCommercial Chassis————4.9LV8Rearwith 8.86 IN x 1.77 IN Brakes; R-Line
1993CadillacDeVille——————Rearw/ 225mm X 45mm Brakes; R-Line
1993ChevroletLumina APV——————Rearwith Cast Iron Drum; R-Line
1993Oldsmobile88——————Rearwith 8-55/64 IN x 1-49/64 IN Brakes; with Cast Iron Drum; R-Line
1993Oldsmobile98——————Rearwith Cast Iron Drum; R-Line
1993OldsmobileCutlass Ciera——————RearR-Line
1993OldsmobileCutlass Cruiser——————RearR-Line
1993OldsmobileSilhouette——————RearR-Line
1993PontiacBonneville——————Rearwith Cast Iron Drum; R-Line
1993PontiacTrans Sport——————RearR-Line
1992BuickCentury—Sedan4 Door———Rearwith Finned Drum; R-Line
1992BuickCentury—Wagon4 Door———RearR-Line
1992BuickCentury—Coupe2 Door———Rearwith Finned Drum; R-Line
1992BuickLeSabre—Sedan4 Door———Rearwith Cast Iron Drum; R-Line
1992BuickPark Avenue——————RearR-Line
1992CadillacCommercial Chassis————4.9LV8Rearwith 8.86 IN x 1.77 IN Brakes; R-Line
1992CadillacDeVille——————Rearw/ 225mm X 45mm Brakes; R-Line
1992CadillacFleetwood———FWD——Rearw/ 225mm X 45mm Brakes; GM Brake Code J41,JM4; R-Line
1992ChevroletLumina APV——————Rearwith Cast Iron Drum; R-Line
1992Oldsmobile88——————Rearwith 8-55/64 IN x 1-49/64 IN Brakes; with Cast Iron Drum; R-Line
1992Oldsmobile98——————Rearwith Cast Iron Drum; R-Line
1992OldsmobileCutlass Ciera—Sedan4 Door———Rearwith Finned Drum; R-Line
1992OldsmobileCutlass Ciera—Wagon4 Door———RearR-Line
1992OldsmobileCutlass Ciera—Coupe2 Door———Rearwith Finned Drum; R-Line
1992OldsmobileSilhouette——————RearR-Line
1992PontiacBonneville——————Rearwith Cast Iron Drum; R-Line
1992PontiacTrans Sport——————RearR-Line
1991BuickCentury—Wagon4 Door———RearR-Line
1991BuickLeSabre——————Rearwith Cast Iron Drum; R-Line
1991BuickPark Avenue——————Rearwith Cast Iron Drum; R-Line
1991CadillacCommercial Chassis——————Rearwith 8.86 IN x 1.77 IN Brakes; R-Line
1991CadillacDeVille——————Rearw/ 225mm X 45mm Brakes; R-Line
1991CadillacFleetwood———FWD——Rearw/ 225mm X 45mm Brakes; GM Brake Code J41,JM4; R-Line
1991ChevroletLumina APV——————Rearwith Cast Iron Drum; R-Line
1991Oldsmobile98——————Rearwith Cast Iron Drum; R-Line
1991OldsmobileCutlass Ciera—Wagon4 Door———RearR-Line
1991OldsmobileDelta 88——————Rearwith 8-55/64 IN x 1-49/64 IN Brakes; with Cast Iron Drum; R-Line
1991OldsmobileSilhouette——————RearR-Line
1991Pontiac6000—Wagon4 Door———RearR-Line
1991PontiacBonneville——————Rearwith Cast Iron Drum; R-Line
1991PontiacTrans Sport——————RearR-Line
1990BuickCentury—Wagon4 Door———RearR-Line
1990BuickLeSabre—Sedan————Rearwith Cast Iron Drum; R-Line
1990BuickLeSabre—Coupe————Rearwith Cast Iron Drum; R-Line
1990CadillacCommercial Chassis——————Rearwith 8.86 IN x 1.77 IN Brakes; R-Line
1990CadillacDeVille——————Rearw/ 225mm X 45mm Brakes; R-Line
1990CadillacFleetwood———FWD——Rearw/ 225mm X 45mm Brakes; GM Brake Code J41,JM4; R-Line
1990ChevroletCelebrity—Wagon4 Door———RearR-Line
1990ChevroletLumina APV——————Rearwith Cast Iron Drum; R-Line
1990Oldsmobile98——————Rearwith Cast Iron Drum; R-Line
1990OldsmobileCutlass Cruiser—Wagon4 Door———RearR-Line
1990OldsmobileDelta 88——————Rearwith 8-55/64 IN x 1-49/64 IN Brakes; with Cast Iron Drum; R-Line
1990OldsmobileSilhouette——————RearR-Line
1990Pontiac6000—Wagon4 Door———RearR-Line
1990PontiacBonneville——————Rearwith Cast Iron Drum; R-Line
1990PontiacTrans Sport——————RearR-Line
1989BuickCentury—Wagon4 Door———RearR-Line
1989BuickLeSabre—Sedan————Rearwith Cast Iron Drum; R-Line
1989BuickLeSabre—Coupe————Rearwith Cast Iron Drum; R-Line
1989CadillacCommercial Chassis——————RearR-Line
1989CadillacDeVille——————Rearw/ 225mm X 45mm Brakes; with Cast Iron Drum; R-Line
1989CadillacFleetwood———FWD——Rearwith 8-55/64 IN x 1-49/64 IN Brakes; with Cast Iron Drum; R-Line
1989ChevroletCelebrity—Wagon4 Door———RearR-Line
1989Oldsmobile98——————Rearwith Cast Iron Drum; R-Line
1989OldsmobileCutlass Cruiser—Wagon4 Door———RearR-Line
1989OldsmobileDelta 88——————Rearwith 8-55/64 IN x 1-49/64 IN Brakes; with Cast Iron Drum; R-Line
1989Pontiac6000—Wagon4 Door———RearR-Line
1989PontiacBonneville——————Rearwith Cast Iron Drum; R-Line
1988BuickLeSabre—Sedan————Rearwith Cast Iron Drum; R-Line
1988BuickLeSabre—Coupe————Rearwith Cast Iron Drum; R-Line
1988CadillacCommercial Chassis——————RearR-Line
1988CadillacDeVille——————Rearw/ 225mm X 45mm Brakes; with Cast Iron Drum; R-Line
1988CadillacFleetwood———FWD——Rearwith 8-55/64 IN x 1-49/64 IN Brakes; with Cast Iron Drum; R-Line
1988ChevroletCelebrity—Wagon4 Door———RearR-Line
1988Oldsmobile98——————Rearwith Cast Iron Drum; R-Line
1988OldsmobileCutlass Cruiser—Wagon4 Door———RearR-Line
1988OldsmobileDelta 88——————Rearwith 8-55/64 IN x 1-49/64 IN Brakes; with Cast Iron Drum; R-Line
1988Pontiac6000—Wagon4 Door———RearR-Line
1988PontiacBonneville——————Rearwith Cast Iron Drum; R-Line
1987BuickCentury—Wagon4 Door———RearR-Line
1987BuickLeSabre—Sedan————Rearwith Cast Iron Drum; R-Line
1987BuickLeSabre—Coupe————Rearwith Cast Iron Drum; R-Line
1987CadillacCommercial Chassis——————RearR-Line
1987CadillacDeVille——————Rearw/ 225mm X 45mm Brakes; with Cast Iron Drum; R-Line
1987CadillacFleetwood———FWD——Rearwith 8-55/64 IN x 1-49/64 IN Brakes; with Cast Iron Drum; R-Line
1987ChevroletCelebrity—Wagon4 Door———RearR-Line
1987Oldsmobile98——————Rearwith Cast Iron Drum; R-Line
1987OldsmobileCutlass Cruiser—Wagon————RearReplace in Pairs; R-Line
1987OldsmobileDelta 88——————Rearwith 8-55/64 IN x 1-49/64 IN Brakes; with Cast Iron Drum; R-Line
1987Pontiac6000—Wagon4 Door———RearR-Line
1987PontiacBonneville——————Rearwith Cast Iron Drum; R-Line
1986BuickCentury—Wagon4 Door———RearR-Line
1986BuickLeSabre—Sedan————Rearwith Cast Iron Drum; R-Line
1986BuickLeSabre—Coupe————Rearwith Cast Iron Drum; R-Line
1986CadillacCommercial Chassis——————RearR-Line
1986CadillacDeVille——————Rearw/ 225mm X 45mm Brakes; with Cast Iron Drum; R-Line
1986CadillacFleetwood———FWD——Rearwith 8-55/64 IN x 1-49/64 IN Brakes; with Cast Iron Drum; R-Line
1986ChevroletCelebrity—Wagon4 Door———RearR-Line
1986Oldsmobile98——————Rearwith Cast Iron Drum; R-Line
1986OldsmobileCutlass Ciera—Wagon4 Door———RearR-Line
1986OldsmobileDelta 88——————Rearwith 8-55/64 IN x 1-49/64 IN Brakes; with Cast Iron Drum; R-Line
1986Pontiac6000—Wagon4 Door———RearR-Line
1985BuickCentury—Wagon4 Door———RearR-Line
1985CadillacCommercial Chassis——————RearR-Line
1985CadillacDeVille——————Rearw/ 225mm X 45mm Brakes; with Cast Iron Drum; R-Line
1985CadillacFleetwood———FWD——Rearwith 8-55/64 IN x 1-49/64 IN Brakes; with Cast Iron Drum; R-Line
1985ChevroletCelebrity—Wagon4 Door———RearR-Line
1985Oldsmobile98——————Rearwith Cast Iron Drum; R-Line
1985OldsmobileCutlass Ciera—Wagon4 Door———RearR-Line
1985Pontiac6000—Wagon4 Door———RearR-Line
1984BuickCentury—Wagon4 Door———RearR-Line
1984ChevroletCelebrity—Wagon4 Door———RearR-Line
1984OldsmobileCutlass Ciera—Wagon4 Door———RearR-Line
1984Pontiac6000—Wagon4 Door———RearR-Line
1970ChevroletMonte Carlo——————Rearw/ 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