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Rear Brake Drum - ACDelco (18B255)
1984-1991 ACDelco - 18B255
- Sale Price: $94.62
- Sale Price: $94.62
Review Fitment & Product Details
Details
- Brand:
- SKU:
18B255
- GTIN: 00707773350850
- UPC: 707773350850
- Other Names:
19171644
- Description: 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 validated for balance to provide better braking performance. Chamfer angle, vane configuration, and plate thickness all follow the OE design, making them a premium aftermarket replacement for your GM and non-GM vehicle. Also, no machining is required. ACDelco Professional Brake Drums are ready to be installed right out of the box. ⚠ WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
brake-drum;drum;brakes - Condition: New
California Proposition 65
WARNING: Cancer and reproductive harm - www.P65Warnings.ca.gov Pricing is valid online only and may vary in your local store
Vehicle Fitment
Vehicle Fitment
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Key Product Information
Additional Information
| Brand | ACDelco Professional |
| ABS Tone Ring Included | No |
| Bolt Circle Diameter (in) | 5.5 |
| Bolt Circle Diameter (mm) | 139.7 |
| Bolt Hole Quantity | 6 |
| Brake Surface Finish | Turned |
| Center Bore Diameter (in) | 3.57in |
| Center Bore Diameter (mm) | 90.6mm |
| Depth | 86.85 3.42 |
| Discard Thickness (in) | 11.21 |
| Discard Thickness (mm) | 284.7 |
| 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 Advantage 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? |
| Features & Benefits - Bullet 1 | Inspected for balance; resulting in smooth brake operation and noise reduction |
| Features & Benefits - Bullet 2 | Independently tested with Noise/Vibration/Harshness (NVH) and durability/wear testing; resulting in high quality and reliable products |
| Features & Benefits - Bullet 3 | Follows original manufacturers' designs for dispersing heat, helping to prolong pad and rotor life while reducing noise and vibration |
| 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 - Bullet 4 | Check the thickness of your brake pads. |
| 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: |
| Grade Type | Regular |
| Height (in) | 4.38 |
| Length (in) | 11.21 |
| Material | Cast Iron |
| Maximum Brake Diameter (Discard) | 284.73 |
| Measurements | 11 5/32 X 2 3/4 in |
| Mount Hole Diameter (in) | 0.456in |
| Mount Hole Diameter (mm) | 11.582mm |
| Nominal Drum Diameter | 0.441 11.2 |
| Outer Cooling Fins | Yes |
| Outside Diameter | 13.35 0.525 |
| Programming Required | No |
| Signs of Wear & Troubleshooting - Section 1 - Bullet 1 | Squealing or scraping noises. |
| Signs of Wear & Troubleshooting - Section 1 - Bullet 2 | Brake pedal pulsation (not to be confused with normal ABS operation). |
| Stud/Lug Hole Diameter | 0.448 11.4 |
| Stud/Lug Hole Quantity | 6 |
| Weight | 29.2 |
| Width (in) | 14.12 |
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