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ACDelco 18B254A | Rear Brake Drum
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ACDelco 18B254A | Rear Brake Drum

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$177.29
Part Number
ACD18B254A
UPC:
00707773625729
Condition:
New
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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. ? WARNING: Cancer and Reproductive Harm - https://www.P65Warnings.ca.gov

BRAND: ACDelco

FEATURES:

  • Chevrolet;GMC;Workhorse
  • 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

SPECIFICS:

Bolt Circle Diameter (in)6.5
Bolt Circle Diameter (mm)165.1
Bolt Hole Quantity8
Brake Surface FinishDirectional
Center Bore Diameter (in)4.6 in
Center Bore Diameter (mm)116.8 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)9
Includes ABS Sensor RingNo
Length (in)17.3
MaterialCast Iron
Mount Hole Diameter (in)0.619 in
Mount Hole Diameter (mm)15.723 mm
Nominal Brake Drum Diameter (in)13 in
Nominal Brake Drum Diameter (mm)330.2 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)54
Width (in)17.3

DOWNLOADS:

APPLICATIONS:

  • 1987-1991 GMC V3500 - Position: Rear
    • w/ Dual Rear Wheels w/ 13" X 3 1/2" Brakes
  • 1987-1988 Chevrolet R30 - Position: Rear
    • w/ Dual Rear Wheels w/ 13" X 3 1/2" Brakes
  • 1977-1977 Chevrolet P30 - Position: Rear
    • w/ Dual Rear Wheels w/ 13" X 3 1/2" Brakes
  • 1988-1991 Chevrolet C3500 - Position: Rear
    • w/ Dual Rear Wheels w/ 13" X 3 1/2" Brakes
  • 1992-1997 Chevrolet C3500 - Position: Rear
    • with 10000lb , 11000lb or 12000lb GVW w/ Dual Rear Wheels
  • 1974-1974 GMC G35/G3500 Van - Position: Rear
    • w/ Dual Rear Wheels
  • 1977-1986 Chevrolet K30 - Position: Rear
    • w/ Dual Rear Wheels
  • 1998-1998 Chevrolet P30 - Position: Rear
    • w/ Dual Rear Wheels
  • 1979-1984 GMC G3500 - Position: Rear
    • w/ Dual Rear Wheels
  • 1975-1975 Chevrolet P30 - Position: Rear
    • w/ Dual Rear Wheels w/ 13" X 3 1/2" Brakes
  • 1998-2000 GMC C3500 - Position: Rear
    • w/ Dual Rear Wheels
  • 1989-1991 Chevrolet V3500 - Position: Rear
    • w/ Dual Rear Wheels w/ 13" X 3 1/2" Brakes
  • 1974-1974 Chevrolet P30 Van - Position: Rear
    • w/ Dual Rear Wheels
  • 1992-2000 Chevrolet K3500 - Position: Rear
    • with 11000lb GVW w/ Dual Rear Wheels w/ 12,000 lb. GVW
  • 1978-1990 Chevrolet P30 - Position: Rear
    • w/ Dual Rear Wheels
  • 1987-1991 GMC R3500 - Position: Rear
    • w/ Dual Rear Wheels w/ 13" X 3 1/2" Brakes
  • 1992-1997 GMC C3500 - Position: Rear
    • with 11000lb GVW w/ Dual Rear Wheels w/ 12,000 lb. GVW
  • 1979-1999 GMC P3500 - Position: Rear
    • w/ Dual Rear Wheels w/ 13" X 3 1/2" Brakes
  • 1975-1978 GMC P35 - Position: Rear
    • w/ Dual Rear Wheels w/ 13" X 3 1/2" Brakes
  • 1990-1991 GMC C3500 - Position: Rear
    • w/ Dual Rear Wheels w/ 13" X 3 1/2" Brakes
  • 1999-1999 Chevrolet P30 - Position: Rear
    • w/ Dual Rear Wheels w/ 13" X 3 1/2" Brakes
  • 1974-1974 Chevrolet G30 Van - Position: Rear
    • w/ Dual Rear Wheels
  • 1975-1978 GMC C35 - Position: Rear
    • w/ Dual Rear Wheels
  • 1987-1988 Chevrolet V30 - Position: Rear
    • w/ Dual Rear Wheels w/ 13" X 3 1/2" Brakes
  • 1975-1978 GMC G35 - Position: Rear
    • w/ Dual Rear Wheels
  • 1992-1996 GMC G3500 - Position: Rear
    • w/ Dual Rear Wheels
  • 1996-2002 Chevrolet Express 3500 - Position: Rear
    • w/ Dual Rear Wheels
  • 1990-1991 GMC K3500 - Position: Rear
    • w/ Dual Rear Wheels w/ 13" X 3 1/2" Brakes
  • 1979-1986 GMC C3500 - Position: Rear
    • w/ Dual Rear Wheels
  • 1991-1997 Chevrolet P30 - Position: Rear
    • w/ Dual Rear Wheels w/ 13" X 3 1/2" Brakes
  • 1998-2000 Chevrolet C3500 - Position: Rear
    • w/ Dual Rear Wheels
  • 1974-1974 GMC C35/C3500 Pickup - Position: Rear
    • w/ Dual Rear Wheels
  • 1977-1978 GMC K35 - Position: Rear
    • w/ Dual Rear Wheels
  • 1996-2002 GMC Savana 3500 - Position: Rear
    • w/ Dual Rear Wheels
  • 1975-1996 Chevrolet G30 - Position: Rear
    • w/ Dual Rear Wheels
  • 1974-1974 GMC P35/P3500 Van - Position: Rear
    • w/ Dual Rear Wheels w/ 13" X 3 1/2" Brakes
  • 1975-1986 Chevrolet C30 - Position: Rear
    • w/ Dual Rear Wheels w/ 13" X 3 1/2" Brakes
  • 1976-1976 Chevrolet P30 - Position: Rear
    • w/ Dual Rear Wheels
  • 1988-1989 GMC K3500 - Position: Rear
    • w/ Dual Rear Wheels
  • 1992-2000 GMC K3500 - Position: Rear
    • with 10000lb GVW w/ Dual Rear Wheels w/ 12,000 lb. GVW
  • 1974-1974 Chevrolet C30 Pickup - Position: Rear
    • w/ Dual Rear Wheels w/ 13" X 3 1/2" Brakes
  • 2000-2003 Workhorse P30 - Position: Rear
    • Stripped Chassis w/ 13" X 3 1/2" Brakes
  • 1990-1991 Chevrolet K3500 - Position: Rear
    • w/ Dual Rear Wheels w/ 13" X 3 1/2" Brakes
  • 1988-1989 GMC C3500 - Position: Rear
    • w/ Dual Rear Wheels
  • 1988-1989 Chevrolet K3500 - Position: Rear
    • w/ Dual Rear Wheels
  • 1979-1986 GMC K3500 - Position: Rear
    • w/ Dual Rear Wheels
  • 1989-1991 Chevrolet R3500 - Position: Rear
    • w/ Dual Rear Wheels w/ 13" X 3 1/2" Brakes
Warranty Information
1-year Replacement unlimited-mileage warranty
Attributes
Part Type:
Aftermarket
Brand Description:
Rear Brake Drum
Bolt Hole Quantity:
8
Outside Diameter (Inch):
16.18
Material:
Cast Iron
Programming Required:
No
Maximum Brake Diameter (Discard) (Inch):
13.09
Brake Surface Finish:
Directional
Hazardous Material:
No
Minimum Order Quantity:
1
Features & Benefits - Bullet 2:
Drums are inspected for balance; resulting in smooth brake operation and noise reduction
Features & Benefits - Bullet 4:
Non-directional brake surface finish for consistent braking
Features & Benefits - Bullet 3:
Quality validated for proper metallurgy and correct brake plate thickness
Features & Benefits - Bullet 1:
Mill-balanced for proper rotor function, no extra weights are needed
Weight (lb) (Pound):
54
Height (in) (Inch):
9
Width (in) (Inch):
17.3
Length (in) (Inch):
17.3
Signs of Wear & Troubleshooting - Section 1 - Bull:
Squealing or scraping noises.
Signs of Wear & Troubleshooting - Section 1 - Bull:
Brake pedal pulsation (not to be confused with normal ABS operation).
FAQ - Answer 2:
Yes, ACDelco also offers GM OE and Professional brake drums.
Life Cycle Status:
Announced
FAQ - Question 3:
Do I have to replace my brake drums after a certain amount of time?
Life Cycle Status Description:
Announced - Part has been announced to customers on a paper “New Number Announcement”. Part is active.
FAQ - Question 1:
Do I have to replace all my brake parts when replacing my brake drums?
Item Level GTIN:
00707773625729
FAQ - Question 2:
Does ACDelco offer other grades of brake drums?
FAQ - Answer 1:
No, but it is a good idea to inspect them for wear-out, cracking, leaking, etc.
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).
FAQ - Answer 3:
No, but it is a good idea to inspect them at every tire rotation.
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).
Outside Diameter (Millimeter):
410.97
Good Maintenance Practices - Section 2 - Header:
The following should be conducted by a qualified technician:
Mount Hole Diameter (in):
0.619 in
Mount Hole Diameter (mm):
15.723 mm
Center Bore Diameter (in):
4.6 in
Center Bore Diameter (mm):
116.8 mm
Bolt Circle Diameter (in) (Inch):
6.5
Bolt Circle Diameter (mm) (Millimeter):
165.1
Includes ABS Sensor Ring:
No
Maximum Brake Diameter (Discard) (Millimeter):
332.49
Nominal Brake Drum Diameter (in):
13 in
Nominal Brake Drum Diameter (mm):
330.2 mm
Cooling Fins:
Yes
Country of Origin:
China
Weight - Each (Gross Pounds):
54.00
Height - Each (Inch):
09.00
Length - Each (Inch):
17.30
Width - Each (Inch):
17.30



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