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  2. Auto Parts
  3. Brake System
  4. Drums and Rotors
  5. Brake Drum
  6. ACDelco 18B471

ACDelco 18B471 Brake Drum

ACDelco 18B471 Brake Drum Image 1
ACDelco 18B471 Brake Drum Image 2
ACDelco 18B471 Brake Drum Image 3
ACDelco 18B471 Brake Drum

ACDelco
Brand:ACDelco
Part Number: 18B471
UPC: 00707773403495
Weight: 22.7 lbs
Condition:New



On Sale:

$74.91

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

Product Information

Description:

DRUM R (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):
5.5 in
Bolt Circle Diameter (mm):
139.7 mm
Bolt Hole Quantity:
6
Center Bore Diameter (in):
3.6in
Center Bore Diameter (mm):
91.4mm
Depth:
2.91 in.
Depth:
73.9 mm
Height (in):
4.2 in
Length (in):
11.06 in
Material:
Cast Iron
Maximum Brake Diameter (Discard):
280.92 mm
Measurements:
11 X 2 in
Mount Hole Diameter (in):
0.456in
Mount Hole Diameter (mm):
11.582mm
Nominal Drum Diameter:
0.435 in.
Nominal Drum Diameter:
11.05 mm
Outer Cooling Fins:
Yes
Outside Diameter:
0.539 in.
Outside Diameter:
13.7 mm
Programming Required:
No
Stud/Lug Hole Diameter:
0.448 in.
Stud/Lug Hole Diameter:
11.4 mm
Stud/Lug Hole Quantity:
6
Weight:
22.7 lb
Width (in):
14.1 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 18B471 Brake Drum fitment info!

Last Updated: 03/03/2024

Years Vehicle Per Vehicle Position Fit NotesFitment Notes

1974

 

1973

 

1974

 

1973

 
Chevrolet Blazer

7.4L V8 Gas OHV
2
 
Rear
 
Professional
with 11 IN x 2 IN Brakes
4WD
 

Chevrolet Blazer



7.4L V8 Gas OHV

Rear Professional
with 11 IN x 2 IN Brakes
4WD

2 Per Vehicle

1974

 

1973

 

1972

 

1971

 

1974

 

1973

 

1972

 

1971

 
Chevrolet Blazer

4.1L L6 Gas OHV,
4.8L L6 Gas OHV,
5.7L V8 Gas OHV
2
 
Rear
 
Professional
with 11 IN x 2 IN Brakes
4WD
 

Chevrolet Blazer



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

Rear Professional
with 11 IN x 2 IN Brakes
4WD

2 Per Vehicle

1973

 

1972

 

1971

 

1973

 

1972

 

1971

 
Chevrolet Blazer

5.0L V8 Gas OHV
2
 
Rear
 
Professional
with 11 IN x 2 IN Brakes
4WD
 

Chevrolet Blazer



5.0L V8 Gas OHV

Rear Professional
with 11 IN x 2 IN Brakes
4WD

2 Per Vehicle

1975

 

1975

 
Chevrolet K10

4.1L L6 Gas OHV,
4.8L L6 Gas OHV,
5.7L V8 Gas OHV,
6.6L V8 Gas OHV
2
 
Rear
 
Professional
with 11 IN x 2 IN Brakes
 

Chevrolet K10



4.1L L6 Gas OHV,
4.8L L6 Gas OHV,
5.7L V8 Gas OHV,
6.6L V8 Gas OHV

Rear Professional
with 11 IN x 2 IN Brakes

2 Per Vehicle

1974

 

1973

 

1974

 

1973

 
Chevrolet K10 Pickup

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

Chevrolet K10 Pickup



4.1L L6 LPG OHV,
7.4L V8 Gas OHV

Rear Professional
with 11 IN x 2 IN Brakes

2 Per Vehicle

1974

 

1973

 

1972

 

1971

 

1974

 

1973

 

1972

 

1971

 
Chevrolet K10 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 x 2 IN Brakes
 

Chevrolet K10 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 x 2 IN Brakes

2 Per Vehicle

1973

 

1972

 

1971

 

1973

 

1972

 

1971

 
Chevrolet K10 Pickup

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

Chevrolet K10 Pickup



5.0L V8 Gas OHV

Rear Professional
with 11 IN x 2 IN Brakes

2 Per Vehicle

1972

 

1971

 

1972

 

1971

 
Chevrolet K10 Pickup

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

Chevrolet K10 Pickup



6.6L V8 Gas OHV

Rear Professional
with 11 IN x 2 IN Brakes

2 Per Vehicle

1975

 

1975

 
Chevrolet K10 Suburban

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

Chevrolet K10 Suburban



6.6L V8 Gas OHV

Rear Professional
with 11 IN x 2 IN Brakes

2 Per Vehicle

1975

 

1974

 

1973

 

1972

 

1971

 

1975

 

1974

 

1973

 

1972

 

1971

 
Chevrolet K10 Suburban

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

Chevrolet K10 Suburban



4.1L L6 Gas OHV,
5.7L V8 Gas OHV

Rear Professional
with 11 IN x 2 IN Brakes

2 Per Vehicle

1974

 

1973

 

1974

 

1973

 
Chevrolet K10 Suburban

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

Chevrolet K10 Suburban



4.1L L6 LPG OHV,
7.4L V8 Gas OHV

Rear Professional
with 11 IN x 2 IN Brakes

2 Per Vehicle

1974

 

1973

 

1972

 

1971

 

1974

 

1973

 

1972

 

1971

 
Chevrolet K10 Suburban

5.7L V8 LPG OHV
2
 
Rear
 
Professional
with 11 IN x 2 IN Brakes
 

Chevrolet K10 Suburban



5.7L V8 LPG OHV

Rear Professional
with 11 IN x 2 IN Brakes

2 Per Vehicle

1973

 

1972

 

1971

 

1973

 

1972

 

1971

 
Chevrolet K10 Suburban

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

Chevrolet K10 Suburban



5.0L V8 Gas OHV

Rear Professional
with 11 IN x 2 IN Brakes

2 Per Vehicle

1972

 

1971

 

1972

 

1971

 
Chevrolet K10 Suburban

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

Chevrolet K10 Suburban



6.6L V8 Gas OHV

Rear Professional
with 11 IN x 2 IN Brakes

2 Per Vehicle

1975

 

1975

 
Chevrolet K5 Blazer

4.1L L6 Gas OHV,
5.7L V8 Gas OHV,
6.6L V8 Gas OHV
2
 
Rear
 
Professional
with 11 IN x 2 IN Brakes
4WD
 

Chevrolet K5 Blazer



4.1L L6 Gas OHV,
5.7L V8 Gas OHV,
6.6L V8 Gas OHV

Rear Professional
with 11 IN x 2 IN Brakes
4WD

2 Per Vehicle

1975

 

1975

 
GMC Jimmy

6.6L V8 Gas OHV
2
 
Rear
 
Professional
with 11 IN x 2 IN Brakes
4WD
 

GMC Jimmy



6.6L V8 Gas OHV

Rear Professional
with 11 IN x 2 IN Brakes
4WD

2 Per Vehicle

1975

 

1974

 

1973

 

1972

 

1971

 

1975

 

1974

 

1973

 

1972

 

1971

 
GMC Jimmy

4.1L L6 Gas OHV,
5.7L V8 Gas OHV
2
 
Rear
 
Professional
with 11 IN x 2 IN Brakes
4WD
 

GMC Jimmy



4.1L L6 Gas OHV,
5.7L V8 Gas OHV

Rear Professional
with 11 IN x 2 IN Brakes
4WD

2 Per Vehicle

1974

 

1973

 

1974

 

1973

 
GMC Jimmy

7.4L V8 Gas OHV
2
 
Rear
 
Professional
with 11 IN x 2 IN Brakes
4WD
 

GMC Jimmy



7.4L V8 Gas OHV

Rear Professional
with 11 IN x 2 IN Brakes
4WD

2 Per Vehicle

1974

 

1973

 

1972

 

1971

 

1974

 

1973

 

1972

 

1971

 
GMC Jimmy

4.8L L6 Gas OHV
2
 
Rear
 
Professional
with 11 IN x 2 IN Brakes
4WD
 

GMC Jimmy



4.8L L6 Gas OHV

Rear Professional
with 11 IN x 2 IN Brakes
4WD

2 Per Vehicle

1973

 

1972

 

1971

 

1973

 

1972

 

1971

 
GMC Jimmy

5.0L V8 Gas OHV
2
 
Rear
 
Professional
with 11 IN x 2 IN Brakes
4WD
 

GMC Jimmy



5.0L V8 Gas OHV

Rear Professional
with 11 IN x 2 IN Brakes
4WD

2 Per Vehicle

1975

 

1975

 
GMC K15

4.1L L6 Gas OHV,
4.8L L6 Gas OHV,
5.7L V8 Gas OHV,
6.6L V8 Gas OHV
2
 
Rear
 
Professional
with 11 IN x 2 IN Brakes
 

GMC K15



4.1L L6 Gas OHV,
4.8L L6 Gas OHV,
5.7L V8 Gas OHV,
6.6L V8 Gas OHV

Rear Professional
with 11 IN x 2 IN Brakes

2 Per Vehicle

1975

 

1975

 
GMC K15 Suburban

4.1L L6 Gas OHV,
5.7L V8 Gas OHV,
6.6L V8 Gas OHV
2
 
Rear
 
Professional
with 11 IN x 2 IN Brakes
 

GMC K15 Suburban



4.1L L6 Gas OHV,
5.7L V8 Gas OHV,
6.6L V8 Gas OHV

Rear Professional
with 11 IN x 2 IN Brakes

2 Per Vehicle

1974

 

1974

 
GMC K15/K1500 Pickup

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

GMC K15/K1500 Pickup



4.8L L6 LPG OHV

Rear Professional
with 11 IN x 2 IN Brakes

2 Per Vehicle

1974

 

1973

 

1974

 

1973

 
GMC K15/K1500 Pickup

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

GMC K15/K1500 Pickup



4.1L L6 LPG OHV,
7.4L V8 Gas OHV

Rear Professional
with 11 IN x 2 IN Brakes

2 Per Vehicle

1974

 

1973

 

1972

 

1971

 

1974

 

1973

 

1972

 

1971

 
GMC K15/K1500 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 x 2 IN Brakes
 

GMC K15/K1500 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 x 2 IN Brakes

2 Per Vehicle

1973

 

1972

 

1971

 

1973

 

1972

 

1971

 
GMC K15/K1500 Pickup

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

GMC K15/K1500 Pickup



5.0L V8 Gas OHV

Rear Professional
with 11 IN x 2 IN Brakes

2 Per Vehicle

1972

 

1971

 

1972

 

1971

 
GMC K15/K1500 Pickup

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

GMC K15/K1500 Pickup



6.6L V8 Gas OHV

Rear Professional
with 11 IN x 2 IN Brakes

2 Per Vehicle

1974

 

1973

 

1974

 

1973

 
GMC K15/K1500 Suburban

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

GMC K15/K1500 Suburban



4.1L L6 LPG OHV,
7.4L V8 Gas OHV

Rear Professional
with 11 IN x 2 IN Brakes

2 Per Vehicle

1974

 

1973

 

1972

 

1971

 

1974

 

1973

 

1972

 

1971

 
GMC K15/K1500 Suburban

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

GMC K15/K1500 Suburban



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

Rear Professional
with 11 IN x 2 IN Brakes

2 Per Vehicle

1973

 

1972

 

1971

 

1973

 

1972

 

1971

 
GMC K15/K1500 Suburban

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

GMC K15/K1500 Suburban



5.0L V8 Gas OHV

Rear Professional
with 11 IN x 2 IN Brakes

2 Per Vehicle

1972

 

1971

 

1972

 

1971

 
GMC K15/K1500 Suburban

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

GMC K15/K1500 Suburban



6.6L V8 Gas OHV

Rear Professional
with 11 IN x 2 IN Brakes

2 Per Vehicle

1971

 

1971

 
GMC K15/K1500 Suburban

4.8L L6 Gas OHV
2
 
Rear
 
Professional
with 11 IN x 2 IN Brakes
 

GMC K15/K1500 Suburban



4.8L L6 Gas OHV

Rear Professional
with 11 IN x 2 IN Brakes

2 Per Vehicle