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ACDelco 18B77 Brake Drum


Brand:	ACDelco
Part Number:	18B77
UPC:	00036666683288
Weight:	20.5 lbs
Condition:	New

Availability:	0 in Stock
	OUT OF STOCK

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:

Bolt Circle Diameter (in):

4.5 in

Bolt Circle Diameter (mm):

114.3 mm

Bolt Hole Quantity:

Brake Surface Finish:

Turned

Center Bore Diameter (in):

2.84in

Center Bore Diameter (mm):

72.2mm

Depth:

3.6 in.

Depth:

91.45 mm

Discard Thickness (in):

10.06 in

Discard Thickness (mm):

255.5 mm

Grade Type:

Regular

Height (in):

4.4 in

Length (in):

10.06 in

Material:

Cast Iron

Maximum Brake Diameter (Discard):

255.52 mm

Mount Hole Diameter (in):

0.621in

Mount Hole Diameter (mm):

15.773mm

Nominal Drum Diameter:

0.396 in.

Nominal Drum Diameter:

10.05 mm

Outer Cooling Fins:

Yes

Outside Diameter:

0.496 in.

Outside Diameter:

12.6 mm

Programming Required:

Stud/Lug Hole Diameter:

0.613 in.

Stud/Lug Hole Diameter:

15.55 mm

Stud/Lug Hole Quantity:

Weight:

20.5 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:

Select a vehicle to narrow ACDelco 18B77 Brake Drum fitment info!

Last Updated: 03/03/2024

Years

Vehicle

Per Vehicle

Position

Fit Notes

Fitment Notes

American Motors Ambassador

5.0L V8 Gas OHV,
5.9L V8 Gas OHV,
6.6L V8 Gas OHV

2 Rear

Professional
with 10in x 2-1/2in Brakes

American Motors Ambassador

5.0L V8 Gas OHV,
5.9L V8 Gas OHV,
6.6L V8 Gas OHV

Rear Professional
with 10in x 2-1/2in Brakes

2 Per Vehicle

American Motors Gremlin

3.8L L6 Gas OHV,
4.2L L6 Gas OHV,
5.0L V8 Gas OHV

2 Rear

Professional
with Single Finned Drum
with Flange
with 10 IN Brakes
Composite Drum

American Motors Gremlin

3.8L L6 Gas OHV,
4.2L L6 Gas OHV,
5.0L V8 Gas OHV

Rear Professional
with Single Finned Drum
with Flange
with 10 IN Brakes
Composite Drum

2 Per Vehicle

American Motors Hornet

3.8L L6 Gas OHV,
4.2L L6 Gas OHV,
5.0L V8 Gas OHV

2 Rear

Professional
with Single Finned Drum
with Flange
Composite Drum

American Motors Hornet

3.8L L6 Gas OHV,
4.2L L6 Gas OHV,
5.0L V8 Gas OHV

Rear Professional
with Single Finned Drum
with Flange
Composite Drum

2 Per Vehicle

1974

American Motors Hornet

5.9L V8 Gas OHV

2 Rear

Professional
with Single Finned Drum
with Flange
Composite Drum

American Motors Hornet

5.9L V8 Gas OHV

Rear Professional
with Single Finned Drum
with Flange
Composite Drum

2 Per Vehicle

1974

American Motors Javelin

3.8L L6 Gas OHV,
4.2L L6 Gas OHV,
5.0L V8 Gas OHV,
5.9L V8 Gas OHV,
6.6L V8 Gas OHV

2 Rear

Professional
with Single Finned Drum
with Flange
Composite Drum

American Motors Javelin

3.8L L6 Gas OHV,
4.2L L6 Gas OHV,
5.0L V8 Gas OHV,
5.9L V8 Gas OHV,
6.6L V8 Gas OHV

Rear Professional
with Single Finned Drum
with Flange
Composite Drum

2 Per Vehicle

ACDelco 18B77 Brake Drum

Product Information

Description:

Features and Benefits:

Specifications:

Features and Benefits:

Specifications:

Select a vehicle to narrow ACDelco 18B77 Brake Drum fitment info!

American Motors Ambassador 5.0L V8 Gas OHV,5.9L V8 Gas OHV,6.6L V8 Gas OHV

2

Rear

Professionalwith 10in x 2-1/2in Brakes

American Motors Ambassador

5.0L V8 Gas OHV,5.9L V8 Gas OHV,6.6L V8 Gas OHV Rear Professionalwith 10in x 2-1/2in Brakes 2 Per Vehicle

American Motors Gremlin 3.8L L6 Gas OHV,4.2L L6 Gas OHV,5.0L V8 Gas OHV

2

Rear

Professionalwith Single Finned Drum with Flange with 10 IN Brakes Composite Drum

American Motors Gremlin

3.8L L6 Gas OHV,4.2L L6 Gas OHV,5.0L V8 Gas OHV Rear Professionalwith Single Finned Drum with Flange with 10 IN Brakes Composite Drum 2 Per Vehicle

American Motors Hornet 3.8L L6 Gas OHV,4.2L L6 Gas OHV,5.0L V8 Gas OHV

2

Rear

Professionalwith Single Finned Drum with Flange Composite Drum

American Motors Hornet

3.8L L6 Gas OHV,4.2L L6 Gas OHV,5.0L V8 Gas OHV Rear Professionalwith Single Finned Drum with Flange Composite Drum 2 Per Vehicle

American Motors Hornet 5.9L V8 Gas OHV

2

Rear

Professionalwith Single Finned Drum with Flange Composite Drum

American Motors Hornet

5.9L V8 Gas OHV Rear Professionalwith Single Finned Drum with Flange Composite Drum 2 Per Vehicle

American Motors Javelin 3.8L L6 Gas OHV,4.2L L6 Gas OHV,5.0L V8 Gas OHV,5.9L V8 Gas OHV,6.6L V8 Gas OHV

2

Rear

Professionalwith Single Finned Drum with Flange Composite Drum

American Motors Javelin

3.8L L6 Gas OHV,4.2L L6 Gas OHV,5.0L V8 Gas OHV,5.9L V8 Gas OHV,6.6L V8 Gas OHV Rear Professionalwith Single Finned Drum with Flange Composite Drum 2 Per Vehicle

American Motors Matador 4.2L L6 Gas OHV,5.9L V8 Gas OHV

2

Rear

Professional

American Motors Matador

4.2L L6 Gas OHV,5.9L V8 Gas OHV Rear Professional 2 Per Vehicle

American Motors Matador 5.0L V8 Gas OHV

2

Rear

Professional

American Motors Matador

5.0L V8 Gas OHV Rear Professional 2 Per Vehicle

American Motors Matador 4.2L L6 Gas OHV,5.0L V8 Gas OHV,5.9L V8 Gas OHV,6.6L V8 Gas OHV

2

Rear

ProfessionalWagon4 Doors

American Motors Matador

4.2L L6 Gas OHV,5.0L V8 Gas OHV,5.9L V8 Gas OHV,6.6L V8 Gas OHV Rear ProfessionalWagon4 Doors 2 Per Vehicle

American Motors Matador 3.8L L6 Gas OHV,4.2L L6 Gas OHV,5.0L V8 Gas OHV,5.9L V8 Gas OHV,6.6L V8 Gas OHV

2

Rear

Professionalwith 10in x 2-1/2in Brakes

American Motors Matador

3.8L L6 Gas OHV,4.2L L6 Gas OHV,5.0L V8 Gas OHV,5.9L V8 Gas OHV,6.6L V8 Gas OHV Rear Professionalwith 10in x 2-1/2in Brakes 2 Per Vehicle

American Motors Pacer 3.8L L6 Gas OHV,4.2L L6 Gas OHV

2

Rear

Professionalwith Single Finned Drum with Flange Composite Drum

American Motors Pacer

3.8L L6 Gas OHV,4.2L L6 Gas OHV Rear Professionalwith Single Finned Drum with Flange Composite Drum 2 Per Vehicle

Jeep Cherokee 2.5L L4 Gas OHV,4.0L L6 Gas OHV

2

Rear

Professionalwith 10 IN Brakes

Jeep Cherokee

2.5L L4 Gas OHV,4.0L L6 Gas OHV Rear Professionalwith 10 IN Brakes 2 Per Vehicle

Jeep Cherokee 2.5L L4 Gas OHV,4.0L L6 Gas OHV

2

Rear

Professionalwith 10in x 2-1/2in Brakes DANA 44

Jeep Cherokee

2.5L L4 Gas OHV,4.0L L6 Gas OHV Rear Professionalwith 10in x 2-1/2in Brakes DANA 44 2 Per Vehicle

American Motors Ambassador

5.0L V8 Gas OHV,
5.9L V8 Gas OHV,
6.6L V8 Gas OHV

Professional
with 10in x 2-1/2in Brakes

5.0L V8 Gas OHV,
5.9L V8 Gas OHV,
6.6L V8 Gas OHV

Rear Professional
with 10in x 2-1/2in Brakes

2 Per Vehicle

American Motors Gremlin

3.8L L6 Gas OHV,
4.2L L6 Gas OHV,
5.0L V8 Gas OHV

Professional
with Single Finned Drum
with Flange
with 10 IN Brakes
Composite Drum

3.8L L6 Gas OHV,
4.2L L6 Gas OHV,
5.0L V8 Gas OHV

Rear Professional
with Single Finned Drum
with Flange
with 10 IN Brakes
Composite Drum

2 Per Vehicle

American Motors Hornet

3.8L L6 Gas OHV,
4.2L L6 Gas OHV,
5.0L V8 Gas OHV

Professional
with Single Finned Drum
with Flange
Composite Drum

3.8L L6 Gas OHV,
4.2L L6 Gas OHV,
5.0L V8 Gas OHV

Rear Professional
with Single Finned Drum
with Flange
Composite Drum

2 Per Vehicle

American Motors Hornet

5.9L V8 Gas OHV

Professional
with Single Finned Drum
with Flange
Composite Drum

5.9L V8 Gas OHV

Rear Professional
with Single Finned Drum
with Flange
Composite Drum

2 Per Vehicle

American Motors Javelin

3.8L L6 Gas OHV,
4.2L L6 Gas OHV,
5.0L V8 Gas OHV,
5.9L V8 Gas OHV,
6.6L V8 Gas OHV

Professional
with Single Finned Drum
with Flange
Composite Drum

3.8L L6 Gas OHV,
4.2L L6 Gas OHV,
5.0L V8 Gas OHV,
5.9L V8 Gas OHV,
6.6L V8 Gas OHV

Rear Professional
with Single Finned Drum
with Flange
Composite Drum

2 Per Vehicle

American Motors Matador

4.2L L6 Gas OHV,
5.9L V8 Gas OHV

4.2L L6 Gas OHV,
5.9L V8 Gas OHV

Rear Professional

2 Per Vehicle

American Motors Matador

5.0L V8 Gas OHV

5.0L V8 Gas OHV

Rear Professional

2 Per Vehicle

American Motors Matador

4.2L L6 Gas OHV,
5.0L V8 Gas OHV,
5.9L V8 Gas OHV,
6.6L V8 Gas OHV

Professional
Wagon
4 Doors

4.2L L6 Gas OHV,
5.0L V8 Gas OHV,
5.9L V8 Gas OHV,
6.6L V8 Gas OHV

Rear Professional
Wagon
4 Doors

2 Per Vehicle

American Motors Matador

3.8L L6 Gas OHV,
4.2L L6 Gas OHV,
5.0L V8 Gas OHV,
5.9L V8 Gas OHV,
6.6L V8 Gas OHV

Professional
with 10in x 2-1/2in Brakes

3.8L L6 Gas OHV,
4.2L L6 Gas OHV,
5.0L V8 Gas OHV,
5.9L V8 Gas OHV,
6.6L V8 Gas OHV

Rear Professional
with 10in x 2-1/2in Brakes

2 Per Vehicle

American Motors Pacer

3.8L L6 Gas OHV,
4.2L L6 Gas OHV

Professional
with Single Finned Drum
with Flange
Composite Drum

3.8L L6 Gas OHV,
4.2L L6 Gas OHV

Rear Professional
with Single Finned Drum
with Flange
Composite Drum

2 Per Vehicle

Jeep Cherokee

2.5L L4 Gas OHV,
4.0L L6 Gas OHV

Professional
with 10 IN Brakes

2.5L L4 Gas OHV,
4.0L L6 Gas OHV

Rear Professional
with 10 IN Brakes

2 Per Vehicle

Jeep Cherokee

2.5L L4 Gas OHV,
4.0L L6 Gas OHV

Professional
with 10in x 2-1/2in Brakes
DANA 44

2.5L L4 Gas OHV,
4.0L L6 Gas OHV

Rear Professional
with 10in x 2-1/2in Brakes
DANA 44

2 Per Vehicle

Jeep Cherokee

2.1L L4 Diesel SOHC Turbo

Professional
with 10in x 2-1/2in Brakes
DANA 44

2.1L L4 Diesel SOHC Turbo

Rear Professional
with 10in x 2-1/2in Brakes
DANA 44

2 Per Vehicle

Jeep Cherokee

2.1L L4 Diesel SOHC Turbo,
2.5L L4 Gas OHV,
2.8L V6 Gas OHV

Professional
with AMC Large Axle
with 10in x 2-1/2in Brakes

2.1L L4 Diesel SOHC Turbo,
2.5L L4 Gas OHV,
2.8L V6 Gas OHV

Rear Professional
with AMC Large Axle
with 10in x 2-1/2in Brakes

2 Per Vehicle

Jeep Comanche

2.5L L4 Gas OHV,
4.0L L6 Gas OHV