ACDelco
ACDelco 18B80 | Rear Brake Drum
ACDelco Professional Brake Drums are constructed with G3000 SAE qualified material for structural integrity and maximum service life. They are tested to ISO/TS 16949 quality system standards and...
Bolt Circle Diameter (in) | 3.937 |
Bolt Circle Diameter (mm) | 100 |
Bolt Hole Quantity | 5 |
Brake Surface Finish | Directional |
Center Bore Diameter (in) | 2.3 in |
Center Bore Diameter (mm) | 58.4 mm |
Cooling Fins | Yes |
FAQ - Answer 1 | No, but it is a good idea to inspect them for wear-out, cracking, leaking, etc. |
FAQ - Answer 2 | Yes, ACDelco also offers GM OE and Professional brake drums. |
FAQ - Answer 3 | No, but it is a good idea to inspect them at every tire rotation. |
FAQ - Question 1 | Do I have to replace all my brake parts when replacing my brake drums? |
FAQ - Question 2 | Does ACDelco offer other grades of brake drums? |
FAQ - Question 3 | Do I have to replace my brake drums after a certain amount of time? |
Good Maintenance Practices - Section 1 - Bullet 1 | Check brake fluid level at every oil change. Replace fluid according to owner's manual recommendations. |
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 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 1 - Header | The following inspections and maintenance procedures can help prevent potential brake problems: |
Good Maintenance Practices - Section 2 - Bullet 1 | Inspection of the brake hoses for brittleness or cracking. |
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 3 | Inspection of wheel bearings and grease seals. |
Good Maintenance Practices - Section 2 - Bullet 4 | Parking brake adjustments (as needed). |
Good Maintenance Practices - Section 2 - Header | The following should be conducted by a qualified technician: |
Height (in) | 3.3 |
Includes ABS Sensor Ring | No |
Length (in) | 11.1 |
Material | Cast 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 Required | No |
Signs of Wear & Troubleshooting - Section 1 - Bullet 4 | Squealing or scraping noises. |
Signs of Wear & Troubleshooting - Section 1 - Bullet 5 | Brake pedal pulsation (not to be confused with normal ABS operation). |
Weight (lb) | 9 |
Width (in) | 11.1 |