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  2. Auto Parts
  3. Brake System
  4. Drums and Rotors
  5. Brake Drum
  6. ACDelco 18B254A for 1978

ACDelco 18B254A Brake Drum
for 1978 (please select make/model)

ACDelco 18B254A Brake Drum - 1978

ACDelco
Brand:ACDelco
Part Number: 18B254A
UPC: 00707773625729
Weight: 54 lbs
Condition:New



On Sale:

$138.15

Availability:
18 in Stock
Warehouse: US-4
Quantity:

Product Information

Description:

Get the ACDelco 18B254A Brake Drum for your 1978. Buy now and secure your purchase online!

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

Features and Benefits:

  • 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

Specifications:

Bolt Circle Diameter (in):
6.5 in
Bolt Circle Diameter (mm):
165.1 mm
Bolt Hole Quantity:
8
Brake Surface Finish:
Directional
Center Bore Diameter (in):
4.6in
Center Bore Diameter (mm):
116.8mm
Cooling Fins:
Yes
Depth:
109.2 mm
Depth:
4.3 in.
Height (in):
9 in
Includes ABS Sensor Ring:
No
Length (in):
17.3 in
Material:
Cast Iron
Maximum Brake Diameter (Discard):
13.09 in.
Maximum Brake Diameter (Discard):
332.49 mm
Mount Hole Diameter (in):
0.619in
Mount Hole Diameter (mm):
15.723mm
Nominal Brake Drum Diameter (in):
13in
Nominal Brake Drum Diameter (mm):
330.2mm
Nominal Drum Diameter:
0.515 in.
Nominal Drum Diameter:
13.1 mm
Outer Cooling Fins:
Yes
Outside Diameter:
0.637 in.
Outside Diameter:
16.2 mm
Programming Required:
No
Stud/Lug Hole Diameter:
0.611 in.
Stud/Lug Hole Diameter:
15.5 mm
Stud/Lug Hole Quantity:
8
Weight:
54 lb
Width (in):
17.3 in

Features and Benefits:

  • – Calipers and wheel cylinders should be checked every brake inspection and serviced or replaced as required.
  • – Check brake fluid level at every oil change. Replace fluid according to owner's manual recommendations.
  • – Inspect the brake lines for rust, punctures, or visible leaks (You may be able to do this, but consult a qualified technician if necessary).
  • – Inspection of brake lining and pads for wear or contamination by brake fluid or grease.
  • – Inspection of the brake hoses for brittleness or cracking.
  • – Inspection of wheel bearings and grease seals.
  • – Parking brake adjustments (as needed).
  • The following inspections and maintenance procedures can help prevent potential brake problems:
  • The following should be conducted by a qualified technician:

Specifications:

Country of Origin:
CN

Select a vehicle to narrow ACDelco 18B254A Brake Drum fitment info!

Last Updated: 03/01/2024

Years Vehicle Per Vehicle Position Fit NotesFitment Notes

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 

1979

 

1978

 

1977

 

1976

 

1975

 

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 

1979

 

1978

 

1977

 

1976

 

1975

 
Chevrolet C30

4.8L L6 Gas OHV,
5.7L V8 Gas OHV,
7.4L V8 Gas OHV
2
 
Rear
 
Advantage
With Dual Rear Wheels
with 13 IN x 3-1/2 IN Brakes
 

Chevrolet C30



4.8L L6 Gas OHV,
5.7L V8 Gas OHV,
7.4L V8 Gas OHV

Rear Advantage
With Dual Rear Wheels
with 13 IN x 3-1/2 IN Brakes

2 Per Vehicle

1978

 

1978

 
Chevrolet C30

4.1L L6 Gas OHV,
5.0L V8 Gas OHV,
5.7L V8 Diesel OHV
2
 
Rear
 
Advantage
With Dual Rear Wheels
with 13 IN x 3-1/2 IN Brakes
 

Chevrolet C30



4.1L L6 Gas OHV,
5.0L V8 Gas OHV,
5.7L V8 Diesel OHV

Rear Advantage
With Dual Rear Wheels
with 13 IN x 3-1/2 IN Brakes

2 Per Vehicle

1978

 

1977

 

1976

 

1978

 

1977

 

1976

 
Chevrolet C30

6.6L V8 Gas OHV
2
 
Rear
 
Advantage
With Dual Rear Wheels
with 13 IN x 3-1/2 IN Brakes
 

Chevrolet C30



6.6L V8 Gas OHV

Rear Advantage
With Dual Rear Wheels
with 13 IN x 3-1/2 IN Brakes

2 Per Vehicle

1996

 

1995

 

1994

 

1993

 

1992

 

1991

 

1990

 

1989

 

1988

 

1987

 

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 

1979

 

1978

 

1977

 

1976

 

1975

 

1996

 

1995

 

1994

 

1993

 

1992

 

1991

 

1990

 

1989

 

1988

 

1987

 

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 

1979

 

1978

 

1977

 

1976

 

1975

 
Chevrolet G30

5.7L V8 Gas OHV
2
 
Rear
 
Advantage
With Dual Rear Wheels
 

Chevrolet G30



5.7L V8 Gas OHV

Rear Advantage
With Dual Rear Wheels

2 Per Vehicle

1980

 

1979

 

1978

 

1977

 

1976

 

1975

 

1980

 

1979

 

1978

 

1977

 

1976

 

1975

 
Chevrolet G30

6.6L V8 Gas OHV
2
 
Rear
 
Advantage
With Dual Rear Wheels
 

Chevrolet G30



6.6L V8 Gas OHV

Rear Advantage
With Dual Rear Wheels

2 Per Vehicle

1979

 

1978

 

1979

 

1978

 
Chevrolet G30

4.1L L6 Gas OHV,
5.0L V8 Gas OHV
2
 
Rear
 
Advantage
With Dual Rear Wheels
 

Chevrolet G30



4.1L L6 Gas OHV,
5.0L V8 Gas OHV

Rear Advantage
With Dual Rear Wheels

2 Per Vehicle

1979

 

1978

 

1977

 

1976

 

1975

 

1979

 

1978

 

1977

 

1976

 

1975

 
Chevrolet G30

4.8L L6 Gas OHV
2
 
Rear
 
Advantage
With Dual Rear Wheels
 

Chevrolet G30



4.8L L6 Gas OHV

Rear Advantage
With Dual Rear Wheels

2 Per Vehicle

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 

1979

 

1978

 

1977

 

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 

1979

 

1978

 

1977

 
Chevrolet K30

4.8L L6 Gas OHV,
5.7L V8 Gas OHV
2
 
Rear
 
Advantage
With Dual Rear Wheels
 

Chevrolet K30



4.8L L6 Gas OHV,
5.7L V8 Gas OHV

Rear Advantage
With Dual Rear Wheels

2 Per Vehicle

1980

 

1979

 

1978

 

1977

 

1980

 

1979

 

1978

 

1977

 
Chevrolet K30

6.6L V8 Gas OHV
2
 
Rear
 
Advantage
With Dual Rear Wheels
 

Chevrolet K30



6.6L V8 Gas OHV

Rear Advantage
With Dual Rear Wheels

2 Per Vehicle

1990

 

1989

 

1988

 

1987

 

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 

1979

 

1978

 

1990

 

1989

 

1988

 

1987

 

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 

1979

 

1978

 
Chevrolet P30

5.7L V8 Gas OHV,
7.4L V8 Gas OHV
2
 
Rear
 
Advantage
With Dual Rear Wheels
 

Chevrolet P30



5.7L V8 Gas OHV,
7.4L V8 Gas OHV

Rear Advantage
With Dual Rear Wheels

2 Per Vehicle

1989

 

1988

 

1987

 

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 

1979

 

1978

 

1989

 

1988

 

1987

 

1986

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 

1979

 

1978

 
Chevrolet P30

4.8L L6 Gas OHV
2
 
Rear
 
Advantage
With Dual Rear Wheels
 

Chevrolet P30



4.8L L6 Gas OHV

Rear Advantage
With Dual Rear Wheels

2 Per Vehicle

1978

 

1978

 
GMC C35

4.1L L6 Gas OHV,
5.0L V8 Gas OHV
2
 
Rear
 
Advantage
With Dual Rear Wheels
 

GMC C35



4.1L L6 Gas OHV,
5.0L V8 Gas OHV

Rear Advantage
With Dual Rear Wheels

2 Per Vehicle

1978

 

1977

 

1976

 

1978

 

1977

 

1976

 
GMC C35

6.6L V8 Gas OHV
2
 
Rear
 
Advantage
With Dual Rear Wheels
 

GMC C35



6.6L V8 Gas OHV

Rear Advantage
With Dual Rear Wheels

2 Per Vehicle

1978

 

1977

 

1976

 

1975

 

1978

 

1977

 

1976

 

1975

 
GMC C35

4.8L L6 Gas OHV,
5.7L V8 Gas OHV,
7.4L V8 Gas OHV
2
 
Rear
 
Advantage
With Dual Rear Wheels
 

GMC C35



4.8L L6 Gas OHV,
5.7L V8 Gas OHV,
7.4L V8 Gas OHV

Rear Advantage
With Dual Rear Wheels

2 Per Vehicle

1978

 

1978

 
GMC G35

4.1L L6 Gas OHV
2
 
Rear
 
Advantage
With Dual Rear Wheels
 

GMC G35



4.1L L6 Gas OHV

Rear Advantage
With Dual Rear Wheels

2 Per Vehicle

1978

 

1977

 

1976

 

1975

 

1978

 

1977

 

1976

 

1975

 
GMC G35

4.8L L6 Gas OHV,
5.7L V8 Gas OHV,
6.6L V8 Gas OHV
2
 
Rear
 
Advantage
With Dual Rear Wheels
 

GMC G35



4.8L L6 Gas OHV,
5.7L V8 Gas OHV,
6.6L V8 Gas OHV

Rear Advantage
With Dual Rear Wheels

2 Per Vehicle

1978

 

1977

 

1978

 

1977

 
GMC K35

4.8L L6 Gas OHV,
5.7L V8 Gas OHV,
6.6L V8 Gas OHV
2
 
Rear
 
Advantage
With Dual Rear Wheels
 

GMC K35



4.8L L6 Gas OHV,
5.7L V8 Gas OHV,
6.6L V8 Gas OHV

Rear Advantage
With Dual Rear Wheels

2 Per Vehicle

1978

 

1977

 

1976

 

1975

 

1978

 

1977

 

1976

 

1975

 
GMC P35

4.8L L6 Gas OHV,
5.7L V8 Gas OHV,
7.4L V8 Gas OHV
2
 
Rear
 
Advantage
With Dual Rear Wheels
with 13 IN x 3-1/2 IN Brakes
 

GMC P35



4.8L L6 Gas OHV,
5.7L V8 Gas OHV,
7.4L V8 Gas OHV

Rear Advantage
With Dual Rear Wheels
with 13 IN x 3-1/2 IN Brakes

2 Per Vehicle

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