ACDELCO part description

Technical Specifications

Part Number 18B298A
weight 1 lb

Product Description

Rear Brake Drum

Product Attributes

Material Cast Iron
Bolt Hole Quantity 5
Outside Diameter 244.86mm (9.64 in.)
Bolt Hole Diameter 0.567 in.
Bolt Circle Diameter 100mm (3.94 in.)
Drum Type Directional
Maximum Diameter 201.42mm (7.93 in.)
Maximum Diameter 201.42mm (7.93 in.)
Nominal Diameter 201.42mm (7.93 in.)
Nominal Diameter 201.42mm (7.93 in.)
Programming Required No
Programming Required No
Quantity 1 per Pack
Quantity 1 per Pack
Mount Hole Diameter (in) 0.567in
Center Bore Diameter (in) 2.3in
Height (in) 3.3 in
Bolt Circle Diameter 3.937 IN
Nominal Brake Drum Diameter (in) 7.88in
Maximum Brake Diameter (Discard) 7.93 IN
Weight 9 lb
Outside Diameter 9.65 MM
Length (In) 11.1 IN
Width (in) 11.1 in
Mount Hole Diameter (mm) 14.402mm
Center Bore Diameter (mm) 58.4mm
Bolt Circle Diameter 100 MM
Nominal Brake Drum Diameter (mm) 200.7mm
Maximum Brake Diameter (Discard) 201.42 MM
Stud/Lug Hole Diameter 14.25 MM
Outside Diameter 0.38 IN
Product Description 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. &#9888;<b> WARNING:</b> Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Signs of Wear & Troubleshooting - Section 1 - Bullet 5 Brake pedal pulsation (not to be confused with normal ABS operation).
Good Maintenance Practices - Section 1 - Bullet 2 Calipers and wheel cylinders should be checked every brake inspection and serviced or replaced as required.
Good Maintenance Practices - Section 1 - Bullet 1 Check brake fluid level at every oil change. Replace fluid according to owner's manual recommendations.
Brake Surface Finish Directional
FAQ - Question 1 Do I have to replace all my brake parts when replacing my brake drums?
FAQ - Question 3 Do I have to replace my brake drums after a certain amount of time?
FAQ - Question 2 Does ACDelco offer other grades of brake drums?
Features & Benefits - Bullet 2 Drums are inspected for balance; resulting in smooth brake operation and noise reduction
Good Maintenance Practices - Section 1 - Bullet 3 Inspect 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 2 - Bullet 2 Inspection of brake lining and pads for wear or contamination by brake fluid or grease.
Good Maintenance Practices - Section 2 - Bullet 1 Inspection of the brake hoses for brittleness or cracking.
Good Maintenance Practices - Section 2 - Bullet 3 Inspection of wheel bearings and grease seals.
Features & Benefits - Bullet 1 Mill-balanced for proper rotor function, no extra weights are needed
Includes ABS Sensor Ring No
FAQ - Answer 3 No, but it is a good idea to inspect them at every tire rotation.
FAQ - Answer 1 No, but it is a good idea to inspect them for wear-out, cracking, leaking, etc.
Features & Benefits - Bullet 4 Non-directional brake surface finish for consistent braking
Good Maintenance Practices - Section 2 - Bullet 4 Parking brake adjustments (as needed).
Features & Benefits - Bullet 3 Quality validated for proper metallurgy and correct brake plate thickness
Signs of Wear & Troubleshooting - Section 1 - Bullet 4 Squealing or scraping noises.
Good Maintenance Practices - Section 1 - Header The following inspections and maintenance procedures can help prevent potential brake problems:
Good Maintenance Practices - Section 2 - Header The following should be conducted by a qualified technician:
Cooling Fins Yes
FAQ - Answer 2 Yes, ACDelco also offers GM OE and Professional brake drums.
Nominal Drum Diameter 0.312 IN
Nominal Drum Diameter 7.95 MM
Outer Cooling Fins No
Depth 53.85 MM
Depth 2.12 IN
Stud/Lug Hole Diameter 0.562 IN
Stud/Lug Hole Quantity 5

Additional Information

Warranty Special 12 Months/Unlimited Miles Limited Warranty (Parts Only). Please see ACDelco.com for more details|12 Months/20,000 Kilometers Limited Warranty (Parts Only). Please see ACDelcocanada.com for more details
Harmonized Tariff Code (HTS) 8708305020
Country of Origin (Primary) CN
Warranty Special UOM TX
UPC 00707773625767

Fits Vehicles

  • Pontiac Sunbird (1994)
  • Chevrolet Corsica (1994-1996)
  • Oldsmobile Achieva (1994-1998)
  • Buick Skylark (1994-1998)
  • Chevrolet Beretta (1994-1996)
  • Pontiac Sunfire (1995-2002)
  • Pontiac Grand Am (1994-1998)
  • Chevrolet Cavalier (1994-2002)

A true OEM auto parts brand for GM and non-GM vehicles, ACDelco® offers a wide portfolio of parts designed to keep vehicles on the road longer. These parts work precisely and fit perfectly because they are designed, engineered, tested, and backed by General Motors. But ACDelco also carries aftermarket components that go through the same 18-step quality approval process as the OE parts. Whether customers choose OE or aftermarket, they’d get the same reliable performance, precise engineering, and superior reliability for years to come. ACDelco’s expansive product portfolio includes alternators, filters, batteries, brakes, belts and hoses, oil and fluids, and suspension parts. These products are made to meet GM and non-GM vehicles’ ever-evolving powertrain, collision, maintenance, and repair needs.

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