
Part TypeBrake Drum
BrandACDELCO
Package Height3.05
Package Width12.45
Package Length13.3
Weight13.99 PG
Weight15
Center Bore Diameter (Mm)64.6mm
Nominal Drum Diameter0.39
Center Bore Diameter (In)2.54in
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 4Check the thickness of your brake pads.
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).
Maximum Brake Diameter (Discard)251.46
Stud/Lug Hole Quantity5
Product DescriptionACDelco 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. ⚠<b> WARNING:</b> Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Mount Hole Diameter (In)0.625in
Width (In)12.1
Outer Cooling FinsYes
Bolt Circle Diameter4.25
Length (In)9.9
Abs Tone Ring IncludedNo
Outside Diameter11.45
Good Maintenance Practices - Section 2 - Bullet 3Inspection of wheel bearings and grease seals.
Good Maintenance Practices - Section 2 - Bullet 4Parking brake adjustments (as needed).
Programming RequiredNo
Stud/Lug Hole Diameter0.605
Good Maintenance Practices - Section 2 - Bullet 1Inspection of the brake hoses for brittleness or cracking.
Discard Thickness (In)9.9
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 - HeaderThe following should be conducted by a qualified technician:
Signs Of Wear &#38; Troubleshooting - Section 1 - Bullet 1Reduced braking force.
Signs Of Wear &#38; Troubleshooting - Section 1 - HeaderBrake Drum signs of wear include:
Depth2.15
Faq - Answer 3No, but it is a good idea to inspect them at every tire rotation.
Faq - Answer 2Yes, ACDelco also offers GM OE and Advantage brake drums.
Faq - Answer 1No, but it is a good idea to inspect them for wear-out, cracking, leaking etc.
Features &#38; Benefits - Bullet 2Independently tested with Noise/Vibration/Harshness (NVH) and durability/wear testing; resulting in high quality and reliable products
Bolt Hole Quantity5
Features &#38; Benefits - Bullet 3Follows original manufacturers' designs for dispersing heat, helping to prolong pad and rotor life while reducing noise and vibration
Features &#38; Benefits - Bullet 1Inspected for balance; resulting in smooth brake operation and noise reduction
Discard Thickness (Mm)251.5
Good Maintenance Practices - Section 1 - HeaderThe following inspections and maintenance procedures can help prevent potential brake problems:
MaterialCast Iron
Brake Surface FinishTurned
Mount Hole Diameter (Mm)15.875mm
Height (In)3.3
Signs Of Wear &#38; Troubleshooting - Section 1 - Bullet 2Low brake pedal height.
Signs Of Wear &#38; Troubleshooting - Section 1 - Bullet 3Increased stopping distances.
Signs Of Wear &#38; Troubleshooting - Section 1 - Bullet 4Squealing or scraping noises.
Signs Of Wear &#38; Troubleshooting - Section 1 - Bullet 5Brake pedal pulsation (not to be confused with normal ABS operation).
Faq - Question 3Do I have to replace my brake drums after a certain amount of time?
Grade TypePremium
Faq - Question 2Does ACDelco offer other grades of brake drums?
Faq - Question 1Do I have to replace all my brake parts when replacing my brake drums?
Vendor Part Number18B404
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations