ACDelco 18B298A | Rear Brake Drum

Part Number
Rear Brake Drum

Fits: 94-98 Buick Skylark, 94-96 Chevrolet Beretta, 94-02 Chevrolet Cavalier, 94-96 Chevrolet Corsica, 94-98 Oldsmobile Achieva, 94-98 Pontiac Grand Am, 94 Pontiac Sunbird, 95-02 Pontiac Sunfire

Special Price $44.19 Regular Price $51.99
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Only 6 left
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Estimated Ship Date: 1 Business Day or Less
ACDelco Advantage Brake Drums are constructed with G3000 material for maximum service life. They are validated for balance to provide better braking performance. Chamfer angle, vane configuration, and plate thickness all follow the OE design. Also, no machining is required. ACDelco Advantage Brake Drums are ready to be installed right out of the box. ? WARNING: Cancer and Reproductive Harm -



  • Buick;Chevrolet;Oldsmobile;Pontiac
  • Drums are inspected for balance; resulting in smooth brake operation and noise reduction
  • Mill-balanced for proper rotor function, no extra weights are needed
  • Non-directional brake surface finish for consistent braking
  • Quality validated for proper metallurgy and correct brake plate thickness


Bolt Circle Diameter (in)3.937
Bolt Circle Diameter (mm)100
Bolt Hole Quantity5
Brake Surface FinishDirectional
Center Bore Diameter (in)2.3 in
Center Bore Diameter (mm)58.4 mm
Cooling FinsYes
FAQ - Answer 1No, but it is a good idea to inspect them for wear-out, cracking, leaking, etc.
FAQ - Answer 2Yes, ACDelco also offers GM OE and Professional brake drums.
FAQ - Answer 3No, but it is a good idea to inspect them at every tire rotation.
FAQ - Question 1Do I have to replace all my brake parts when replacing my brake drums?
FAQ - Question 2Does ACDelco offer other grades of brake drums?
FAQ - Question 3Do I have to replace my brake drums after a certain amount of time?
Good Maintenance Practices - Section 1 - Bullet 1Check brake fluid level at every oil change. Replace fluid according to owner's manual recommendations.
Good Maintenance Practices - Section 1 - Bullet 2Calipers and wheel cylinders should be checked every brake inspection and serviced or replaced as required.
Good Maintenance Practices - Section 1 - Bullet 3Inspect the brake lines for rust, punctures, or visible leaks (You may be able to do this, but consult a qualified technician if necessary).
Good Maintenance Practices - Section 1 - HeaderThe following inspections and maintenance procedures can help prevent potential brake problems:
Good Maintenance Practices - Section 2 - Bullet 1Inspection of the brake hoses for brittleness or cracking.
Good Maintenance Practices - Section 2 - Bullet 2Inspection of brake lining and pads for wear or contamination by brake fluid or grease.
Good Maintenance Practices - Section 2 - Bullet 3Inspection of wheel bearings and grease seals.
Good Maintenance Practices - Section 2 - Bullet 4Parking brake adjustments (as needed).
Good Maintenance Practices - Section 2 - HeaderThe following should be conducted by a qualified technician:
Height (in)3.3
Includes ABS Sensor RingNo
Length (in)11.1
MaterialCast Iron
Mount Hole Diameter (in)0.567 in
Mount Hole Diameter (mm)14.402 mm
Nominal Brake Drum Diameter (in)7.88 in
Nominal Brake Drum Diameter (mm)200.7 mm
Programming RequiredNo
Signs of Wear & Troubleshooting - Section 1 - Bullet 4Squealing or scraping noises.
Signs of Wear & Troubleshooting - Section 1 - Bullet 5Brake pedal pulsation (not to be confused with normal ABS operation).
Weight (lb)9
Width (in)11.1

with 200mm x 45mm Brakes



  • 1994-1998 Oldsmobile Achieva - Position: Rear
  • 1994-1994 Pontiac Sunbird - Position: Rear
  • 1994-1998 Buick Skylark - Position: Rear
  • 1994-1998 Pontiac Grand Am - Position: Rear
  • 1994-1996 Chevrolet Beretta - Position: Rear
  • 1994-2002 Chevrolet Cavalier - Position: Rear
  • 1995-2002 Pontiac Sunfire - Position: Rear
  • 1994-1996 Chevrolet Corsica - Position: Rear
Customer Questions
Does AC Delco make Ford parts?
No, AC Delco produces parts primarily for General Motors vehicles and does not make parts specifically for Ford vehicles.
Can I use AC Delco parts to replace OEM parts?
Yes, in most cases AC Delco parts can be used as a replacement for OEM parts. However, it's important to ensure that the parts are compatible with your specific make and model of vehicle.
What AC Delco oil filter do I need?
AC Delco offers a variety of oil filters that are compatible with different makes and models of vehicles. To determine which AC Delco oil filter you need, consult your vehicle's owner's manual or use our online filter lookup tool that matches the make, model, and year of your vehicle.
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