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  2. Auto Parts
  3. Brake System
  4. Drums and Rotors
  5. Brake Drum
  6. ACDelco 18B40

ACDelco 18B40 Brake Drum

ACDelco 18B40 Brake Drum Image 1
ACDelco 18B40 Brake Drum Image 2
ACDelco 18B40 Brake Drum Image 3
ACDelco 18B40 Brake Drum Image 4
ACDelco 18B40 Brake Drum

ACDelco
Brand:ACDelco
Part Number: 18B40
UPC: 00036666682922
Weight: 26.35 lbs
Condition:New



On Sale:

$69.38

Availability:
2 in Stock
Warehouse: US-12
Quantity:

Product Information

Description:

BRK DRUM (B)

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 - https://www.P65Warnings.ca.gov

Features and Benefits:

  • Follows original manufacturers' designs for dispersing heat, helping to prolong pad and rotor life while reducing noise and vibration
  • Independently tested with Noise/Vibration/Harshness (NVH) and durability/wear testing; resulting in high quality and reliable products
  • Inspected for balance; resulting in smooth brake operation and noise reduction

Specifications:

ABS Tone Ring Included:
No
Bolt Circle Diameter (in):
6.5 in
Bolt Circle Diameter (mm):
165.1 mm
Bolt Hole Quantity:
8
Brake Surface Finish:
Turned
Center Bore Diameter (in):
4.6in
Center Bore Diameter (mm):
116.8mm
Depth:
3.52 in.
Depth:
89.4 mm
Discard Thickness (in):
11.21 in
Discard Thickness (mm):
284.7 mm
Grade Type:
Regular
Height (in):
4 in
Length (in):
11.21 in
Material:
Cast Iron
Maximum Brake Diameter (Discard):
284.73 mm
Measurements:
11 5/32 X 2 3/4 in
Mount Hole Diameter (in):
0.63in
Mount Hole Diameter (mm):
16.002mm
Nominal Drum Diameter:
0.441 in.
Nominal Drum Diameter:
11.2 mm
Outer Cooling Fins:
Yes
Outside Diameter:
0.539 in.
Outside Diameter:
13.7 mm
Programming Required:
No
Stud/Lug Hole Diameter:
0.622 in.
Stud/Lug Hole Diameter:
15.8 mm
Stud/Lug Hole Quantity:
8
Weight:
26.35 lb
Width (in):
14.6 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.
  • – Check the thickness of your brake pads.
  • – 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:
US

Select a vehicle to narrow ACDelco 18B40 Brake Drum fitment info!

Last Updated: 03/03/2024

Years Vehicle Per Vehicle Position Fit NotesFitment Notes
Showing 100 fitments from page 2 of 2

1976

 

1975

 

1976

 

1975

 
GMC K25

4.1L L6 Gas OHV
2
 
Rear
 
Professional
with 11 IN Brakes
 

GMC K25



4.1L L6 Gas OHV

Rear Professional
with 11 IN Brakes

2 Per Vehicle

1978

 

1977

 

1978

 

1977

 
GMC K25 Suburban

5.0L V8 Gas OHV
2
 
Rear
 
Professional
with 11 IN Brakes
 

GMC K25 Suburban



5.0L V8 Gas OHV

Rear Professional
with 11 IN Brakes

2 Per Vehicle

1978

 

1977

 

1976

 

1975

 

1978

 

1977

 

1976

 

1975

 
GMC K25 Suburban

4.8L L6 Gas OHV,
5.7L V8 Gas OHV,
6.6L V8 Gas OHV
2
 
Rear
 
Professional
with 11 IN Brakes
 

GMC K25 Suburban



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

Rear Professional
with 11 IN Brakes

2 Per Vehicle

1977

 

1976

 

1977

 

1976

 
GMC K25 Suburban

7.4L V8 Gas OHV
2
 
Rear
 
Professional
with 11 IN Brakes
 

GMC K25 Suburban



7.4L V8 Gas OHV

Rear Professional
with 11 IN Brakes

2 Per Vehicle

1974

 

1974

 
GMC K25/K2500 Pickup

4.8L L6 LPG OHV
2
 
Rear
 
Professional
with 11 IN Brakes
 

GMC K25/K2500 Pickup



4.8L L6 LPG OHV

Rear Professional
with 11 IN Brakes

2 Per Vehicle

1974

 

1973

 

1974

 

1973

 
GMC K25/K2500 Pickup

4.1L L6 LPG OHV,
7.4L V8 Gas OHV
2
 
Rear
 
Professional
with 11 IN Brakes
 

GMC K25/K2500 Pickup



4.1L L6 LPG OHV,
7.4L V8 Gas OHV

Rear Professional
with 11 IN Brakes

2 Per Vehicle

1974

 

1973

 

1972

 

1974

 

1973

 

1972

 
GMC K25/K2500 Pickup

4.1L L6 Gas OHV,
4.8L L6 Gas OHV,
5.7L V8 Gas OHV,
5.7L V8 LPG OHV
2
 
Rear
 
Professional
with 11 IN Brakes
 

GMC K25/K2500 Pickup



4.1L L6 Gas OHV,
4.8L L6 Gas OHV,
5.7L V8 Gas OHV,
5.7L V8 LPG OHV

Rear Professional
with 11 IN Brakes

2 Per Vehicle

1973

 

1972

 

1973

 

1972

 
GMC K25/K2500 Pickup

5.0L V8 Gas OHV
2
 
Rear
 
Professional
with 11 IN Brakes
 

GMC K25/K2500 Pickup



5.0L V8 Gas OHV

Rear Professional
with 11 IN Brakes

2 Per Vehicle

1972

 

1972

 
GMC K25/K2500 Pickup

6.6L V8 Gas OHV
2
 
Rear
 
Professional
with 11 IN Brakes
 

GMC K25/K2500 Pickup



6.6L V8 Gas OHV

Rear Professional
with 11 IN Brakes

2 Per Vehicle

1974

 

1973

 

1974

 

1973

 
GMC K25/K2500 Suburban

4.1L L6 LPG OHV,
7.4L V8 Gas OHV
2
 
Rear
 
Professional
with 11 IN Brakes
 

GMC K25/K2500 Suburban



4.1L L6 LPG OHV,
7.4L V8 Gas OHV

Rear Professional
with 11 IN Brakes

2 Per Vehicle

1974

 

1973

 

1972

 

1974

 

1973

 

1972

 
GMC K25/K2500 Suburban

4.1L L6 Gas OHV,
4.8L L6 Gas OHV,
5.7L V8 Gas OHV,
5.7L V8 LPG OHV
2
 
Rear
 
Professional
with 11 IN Brakes
 

GMC K25/K2500 Suburban



4.1L L6 Gas OHV,
4.8L L6 Gas OHV,
5.7L V8 Gas OHV,
5.7L V8 LPG OHV

Rear Professional
with 11 IN Brakes

2 Per Vehicle

1973

 

1972

 

1973

 

1972

 
GMC K25/K2500 Suburban

5.0L V8 Gas OHV
2
 
Rear
 
Professional
with 11 IN Brakes
 

GMC K25/K2500 Suburban



5.0L V8 Gas OHV

Rear Professional
with 11 IN Brakes

2 Per Vehicle

1972

 

1972

 
GMC K25/K2500 Suburban

6.6L V8 Gas OHV
2
 
Rear
 
Professional
with 11 IN Brakes
 

GMC K25/K2500 Suburban



6.6L V8 Gas OHV

Rear Professional
with 11 IN Brakes

2 Per Vehicle

1980

 

1980

 
GMC K2500

4.1L L6 Gas OHV
2
 
Rear
 
Professional
with 11 IN Brakes
 

GMC K2500



4.1L L6 Gas OHV

Rear Professional
with 11 IN Brakes

2 Per Vehicle

1980

 

1979

 

1980

 

1979

 
GMC K2500

4.8L L6 Gas OHV,
5.7L V8 Gas OHV,
6.6L V8 Gas OHV
2
 
Rear
 
Professional
with 11 IN Brakes
 

GMC K2500



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

Rear Professional
with 11 IN Brakes

2 Per Vehicle

1980

 

1979

 

1980

 

1979

 
GMC K2500 Suburban

4.8L L6 Gas OHV,
5.7L V8 Gas OHV,
6.6L V8 Gas OHV
2
 
Rear
 
Professional
with 11 IN Brakes
 

GMC K2500 Suburban



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

Rear Professional
with 11 IN Brakes

2 Per Vehicle

1978

 

1977

 

1976

 

1975

 

1978

 

1977

 

1976

 

1975

 
GMC P25

4.8L L6 Gas OHV,
5.7L V8 Gas OHV
2
 
Front
 
Professional
with 11 IN Brakes
 

GMC P25



4.8L L6 Gas OHV,
5.7L V8 Gas OHV

Front Professional
with 11 IN Brakes

2 Per Vehicle

1978

 

1977

 

1976

 

1975

 

1978

 

1977

 

1976

 

1975

 
GMC P25

4.8L L6 Gas OHV,
5.7L V8 Gas OHV
2
 
Rear
 
Professional
with 11 IN Brakes
 

GMC P25



4.8L L6 Gas OHV,
5.7L V8 Gas OHV

Rear Professional
with 11 IN Brakes

2 Per Vehicle

1974

 

1973

 

1974

 

1973

 
GMC P25/P2500 Van

4.1L L6 Gas OHV,
4.8L L6 Gas,
4.8L L6 Gas OHV,
5.7L V8 Gas OHV
2
 
Front
 
Professional
with 11 IN Brakes
 

GMC P25/P2500 Van



4.1L L6 Gas OHV,
4.8L L6 Gas,
4.8L L6 Gas OHV,
5.7L V8 Gas OHV

Front Professional
with 11 IN Brakes

2 Per Vehicle

1974

 

1973

 

1974

 

1973

 
GMC P25/P2500 Van

4.1L L6 Gas OHV,
4.8L L6 Gas,
4.8L L6 Gas OHV,
5.7L V8 Gas OHV
2
 
Rear
 
Professional
with 11 IN Brakes
 

GMC P25/P2500 Van



4.1L L6 Gas OHV,
4.8L L6 Gas,
4.8L L6 Gas OHV,
5.7L V8 Gas OHV

Rear Professional
with 11 IN Brakes

2 Per Vehicle

1973

 

1973

 
GMC P25/P2500 Van

5.0L V8 Gas
2
 
Front
 
Professional
with 11 IN Brakes
 

GMC P25/P2500 Van



5.0L V8 Gas

Front Professional
with 11 IN Brakes

2 Per Vehicle

1973

 

1973

 
GMC P25/P2500 Van

5.0L V8 Gas
2
 
Rear
 
Professional
with 11 IN Brakes
 

GMC P25/P2500 Van



5.0L V8 Gas

Rear Professional
with 11 IN Brakes

2 Per Vehicle

1980

 

1979

 

1980

 

1979

 
GMC P2500

4.8L L6 Gas OHV,
5.7L V8 Gas OHV
2
 
Rear
 
Professional
with 11 IN Brakes
 

GMC P2500



4.8L L6 Gas OHV,
5.7L V8 Gas OHV

Rear Professional
with 11 IN Brakes

2 Per Vehicle

1979

 

1979

 
GMC P2500

4.8L L6 Gas OHV,
5.7L V8 Gas OHV
2
 
Front
 
Professional
with 11 IN Brakes
 

GMC P2500



4.8L L6 Gas OHV,
5.7L V8 Gas OHV

Front Professional
with 11 IN Brakes

2 Per Vehicle