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ACDelco 18M284 Brake Master Cylinder

ACDelco 18M284 Brake Master Cylinder Image 1
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ACDelco 18M284 Brake Master Cylinder Image 3
ACDelco 18M284 Brake Master Cylinder

ACDelco
Brand:ACDelco
Part Number: 18M284
UPC: 00036666697728
Weight: 16.77 lbs
Condition:New



On Sale:

$176.95

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

Product Information

Description:

MASTER CYL (B)

ACDelco Professional Brake Master Cylinders use both aluminum and iron castings, making them a high quality replacement for many vehicles on the road today. These master cylinders contain both Ethylene Propylene (EPDM) and Styrene Butadiene (SBR) rubber components to provide superior resistance to heat, corrosion, and leakage. ACDelco Professional Brake Master Cylinders are ready to bench bleed and install right out of the box - no assembly required. These premium aftermarket replacement brake master cylinders are manufactured to meet your expectations for fit, form, and function. ⚠ WARNING: Cancer and Reproductive Harm - https://www.P65Warnings.ca.gov

Features and Benefits:

  • Cast iron and aluminum specifications; no extra stress on the brake boosting mounting
  • Geometrical tolerance ensures that the body and plastic reservoir match for a proper fit
  • Meets the brake performance requirements of SAE J1153 and J1154 testing, providing reliability and quality
  • Piston assembly and return spring help to prevent brake drag, which can cause premature brake pad wear
  • Pressure tested to ensure safe and confident braking

Specifications:

Bleeder Hoses Included:
Yes
Bore Size:
1.750 in.
Brake Booster Included:
No
Height (in):
5.8 in
Length (in):
13.4 in
Master Cylinder Bore Diameter:
1.75 in.
Master Cylinder Bore Diameter:
44.45 mm
Master Cylinder Cap Included:
Yes
Master Cylinder Material:
Iron
Measurements:
1 3/4 in Cylinder Bore
Mounting Bracket Included:
No
Mounting Hole Diameter:
0.423 in.
Mounting Hole Quantity:
4
Port Quantity:
2
Primary Outlet Thread Diameter:
0.5 in.
Primary Outlet Thread Diameter:
12.7 mm
Programming Required:
No
Push Rod Included:
No
Reservoir Included:
Yes
Secondary Outlet Thread Diameter:
0.5625 in.
Secondary Outlet Thread Diameter:
14.287 mm
Weight (lb):
16.77 lb
Width (in):
9.3 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.
  • – 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 18M284 Brake Master Cylinder fitment info!

Last Updated: 03/09/2024

Years Vehicle Per Vehicle Fit NotesFitment Notes
Chevrolet B60

6.0L V8 Gas,
8.2L V8 Diesel,
8.2L V8 Diesel Turbo
1
 
Professional
w/ 19,000 lb. Rear Axle
 

Chevrolet B60



6.0L V8 Gas,
8.2L V8 Diesel,
8.2L V8 Diesel Turbo Professional
w/ 19,000 lb. Rear Axle

1 Per Vehicle
Chevrolet B60

5.7L V8 Gas
1
 
Professional
w/ 19,000 lb. Rear Axle
 

Chevrolet B60



5.7L V8 Gas Professional
w/ 19,000 lb. Rear Axle

1 Per Vehicle
Chevrolet B60

5.7L V8 Gas,
6.0L V8 Gas,
8.2L V8 Diesel,
8.2L V8 Diesel Turbo
1
 
Professional
Front Disc Brakes
 

Chevrolet B60



5.7L V8 Gas,
6.0L V8 Gas,
8.2L V8 Diesel,
8.2L V8 Diesel Turbo Professional
Front Disc Brakes

1 Per Vehicle
Chevrolet B60

14.0L L6 Diesel Turbo
1
 
Professional
Front Disc Brakes
 

Chevrolet B60



14.0L L6 Diesel Turbo Professional
Front Disc Brakes

1 Per Vehicle
Chevrolet B60

7.0L V8 Gas
1
 
Professional
Front Disc Brakes
 

Chevrolet B60



7.0L V8 Gas Professional
Front Disc Brakes

1 Per Vehicle
Chevrolet B60

8.2L V8 Diesel,
8.2L V8 Diesel Turbo
1
 
Professional
w/ 7,000 lb. Front Axle
Front Disc Brakes
 

Chevrolet B60



8.2L V8 Diesel,
8.2L V8 Diesel Turbo Professional
w/ 7,000 lb. Front Axle
Front Disc Brakes

1 Per Vehicle
Chevrolet B60

5.7L V8 Gas,
6.0L V8 Gas,
7.0L V8 Gas
1
 
Professional
w/ 7,000 lb. Front Axle
Front Disc Brakes
 

Chevrolet B60



5.7L V8 Gas,
6.0L V8 Gas,
7.0L V8 Gas Professional
w/ 7,000 lb. Front Axle
Front Disc Brakes

1 Per Vehicle
Chevrolet C50

5.7L V8 Gas
1
 
Professional
without 5000lb Front Axle
Except Bendix Booster Type
 

Chevrolet C50



5.7L V8 Gas Professional
without 5000lb Front Axle
Except Bendix Booster Type

1 Per Vehicle
Chevrolet C50

5.7L V8 Gas
1
 
Professional
with 5,000lb Front Axle
Except Bendix Booster
 

Chevrolet C50



5.7L V8 Gas Professional
with 5,000lb Front Axle
Except Bendix Booster

1 Per Vehicle
Chevrolet C50

5.7L V8 Gas
1
 
Professional
w/o Dual System Hydro-Vac
w/ Delco Brake Booster
Except 12,000 lb. Front Axle
 

Chevrolet C50



5.7L V8 Gas Professional
w/o Dual System Hydro-Vac
w/ Delco Brake Booster
Except 12,000 lb. Front Axle

1 Per Vehicle
Chevrolet C50

5.7L V8 Gas
1
 
Professional
w/o Dual System Hydro-Vac
w/o Delco Brake Booster
12,000 Pound Axle
 

Chevrolet C50



5.7L V8 Gas Professional
w/o Dual System Hydro-Vac
w/o Delco Brake Booster
12,000 Pound Axle

1 Per Vehicle
Chevrolet C50

4.8L L6 Gas OHV,
7.0L V8 Gas
1
 
Professional
w/o Dual System Hydro-Vac
w/ Delco Brake Booster
Except 12,000 lb. Front Axle
 

Chevrolet C50



4.8L L6 Gas OHV,
7.0L V8 Gas Professional
w/o Dual System Hydro-Vac
w/ Delco Brake Booster
Except 12,000 lb. Front Axle

1 Per Vehicle
Chevrolet C50

4.8L L6 Gas OHV,
7.0L V8 Gas
1
 
Professional
w/o Dual System Hydro-Vac
w/o Delco Brake Booster
12,000 Pound Axle
 

Chevrolet C50



4.8L L6 Gas OHV,
7.0L V8 Gas Professional
w/o Dual System Hydro-Vac
w/o Delco Brake Booster
12,000 Pound Axle

1 Per Vehicle
Chevrolet C50

4.8L L6 Gas OHV,
5.7L V8 Gas
1
 
Professional
w/o Dual System Hydro-Vac
w/ Delco Dual Power Booster
w/ Delco Brake Booster
Except 12,000 lb. Front Axle
 

Chevrolet C50



4.8L L6 Gas OHV,
5.7L V8 Gas Professional
w/o Dual System Hydro-Vac
w/ Delco Dual Power Booster
w/ Delco Brake Booster
Except 12,000 lb. Front Axle

1 Per Vehicle
Chevrolet C50

4.8L L6 Gas OHV,
5.7L V8 Gas
1
 
Professional
w/o Dual System Hydro-Vac
w/o Delco Dual Power Booster
w/o Delco Brake Booster
12000 # Front Axle
 

Chevrolet C50



4.8L L6 Gas OHV,
5.7L V8 Gas Professional
w/o Dual System Hydro-Vac
w/o Delco Dual Power Booster
w/o Delco Brake Booster
12000 # Front Axle

1 Per Vehicle
Chevrolet C70

10.4L V8 Diesel Turbo,
6.0L V8 Gas,
7.0L V8 Gas,
8.2L V8 Diesel,
8.2L V8 Diesel Turbo
1
 
Professional
with Dual Hydraulic System
with # F070,F090,F120 Front Axle
with 4 Bolt Mounting
1 3/4 Bore Diameter
 

Chevrolet C70



10.4L V8 Diesel Turbo,
6.0L V8 Gas,
7.0L V8 Gas,
8.2L V8 Diesel,
8.2L V8 Diesel Turbo Professional
with Dual Hydraulic System
with # F070,F090,F120 Front Axle
with 4 Bolt Mounting
1 3/4 Bore Diameter

1 Per Vehicle
Chevrolet C70

10.4L V8 Diesel
1
 
Professional
with Dual Hydraulic System
with # F070,F090,F120 Front Axle
with 4 Bolt Mounting
1 3/4 Bore Diameter
 

Chevrolet C70



10.4L V8 Diesel Professional
with Dual Hydraulic System
with # F070,F090,F120 Front Axle
with 4 Bolt Mounting
1 3/4 Bore Diameter

1 Per Vehicle
Chevrolet C70

14.0L L6 Diesel Turbo,
5.7L V8 Gas
1
 
Professional
with Dual Hydraulic System
with # F070,F090,F120 Front Axle
with 4 Bolt Mounting
1 3/4 Bore Diameter
 

Chevrolet C70



14.0L L6 Diesel Turbo,
5.7L V8 Gas Professional
with Dual Hydraulic System
with # F070,F090,F120 Front Axle
with 4 Bolt Mounting
1 3/4 Bore Diameter

1 Per Vehicle
Chevrolet C70

6.1L L6 Diesel Turbo
1
 
Professional
with Dual Hydraulic System
with # F070,F090,F120 Front Axle
with 4 Bolt Mounting
1 3/4 Bore Diameter
 

Chevrolet C70



6.1L L6 Diesel Turbo Professional
with Dual Hydraulic System
with # F070,F090,F120 Front Axle
with 4 Bolt Mounting
1 3/4 Bore Diameter

1 Per Vehicle
Chevrolet P60

5.7L V8 Gas,
6.0L V8 Gas,
7.0L V8 Gas,
8.2L V8 Diesel
1
 
Professional
Except Bendix Booster
 

Chevrolet P60



5.7L V8 Gas,
6.0L V8 Gas,
7.0L V8 Gas,
8.2L V8 Diesel Professional
Except Bendix Booster

1 Per Vehicle
GMC B6000

5.7L V8 Gas,
6.0L V8 Gas,
8.2L V8 Diesel,
8.2L V8 Diesel Turbo
1
 
Professional
w/ 19,000 lb. Rear Axle
 

GMC B6000



5.7L V8 Gas,
6.0L V8 Gas,
8.2L V8 Diesel,
8.2L V8 Diesel Turbo Professional
w/ 19,000 lb. Rear Axle

1 Per Vehicle
GMC B6000

5.7L V8 Gas,
6.0L V8 Gas,
8.2L V8 Diesel,
8.2L V8 Diesel Turbo
1
 
Professional
Front Disc Brakes
 

GMC B6000



5.7L V8 Gas,
6.0L V8 Gas,
8.2L V8 Diesel,
8.2L V8 Diesel Turbo Professional
Front Disc Brakes

1 Per Vehicle
GMC B6000

14.0L L6 Diesel Turbo
1
 
Professional
Front Disc Brakes
 

GMC B6000



14.0L L6 Diesel Turbo Professional
Front Disc Brakes

1 Per Vehicle
GMC B6000

7.0L V8 Gas
1
 
Professional
Front Disc Brakes
 

GMC B6000



7.0L V8 Gas Professional
Front Disc Brakes

1 Per Vehicle
GMC B6000

8.2L V8 Diesel,
8.2L V8 Diesel Turbo
1
 
Professional
w/ 7,000 lb. Front Axle
Front Disc Brakes
 

GMC B6000



8.2L V8 Diesel,
8.2L V8 Diesel Turbo Professional
w/ 7,000 lb. Front Axle
Front Disc Brakes

1 Per Vehicle
GMC B6000

5.7L V8 Gas,
6.0L V8 Gas,
7.0L V8 Gas
1
 
Professional
w/ 7,000 lb. Front Axle
Front Disc Brakes
 

GMC B6000



5.7L V8 Gas,
6.0L V8 Gas,
7.0L V8 Gas Professional
w/ 7,000 lb. Front Axle
Front Disc Brakes

1 Per Vehicle
GMC C6000

7.0L V8 Gas
1
 
Professional
w/ 23,000 lb. Rear Axle
w/ 19,000, 21,000 lb. Rear Axle
w/ 7,000, 9,000 lb. Front Axle
 

GMC C6000



7.0L V8 Gas Professional
w/ 23,000 lb. Rear Axle
w/ 19,000, 21,000 lb. Rear Axle
w/ 7,000, 9,000 lb. Front Axle

1 Per Vehicle
GMC C6000

5.7L V8 Gas,
6.0L V8 Gas,
8.2L V8 Diesel
1
 
Professional
w/ 23,000 lb. Rear Axle
w/ 19,000, 21,000 lb. Rear Axle
w/ 7,000, 9,000 lb. Front Axle
 

GMC C6000



5.7L V8 Gas,
6.0L V8 Gas,
8.2L V8 Diesel Professional
w/ 23,000 lb. Rear Axle
w/ 19,000, 21,000 lb. Rear Axle
w/ 7,000, 9,000 lb. Front Axle

1 Per Vehicle
GMC C6000 Topkick

6.0L V8 Gas,
6.6L L6 Diesel Turbo,
7.0L V8 Gas OHV
1
 
Professional
w/ 23,000 lb. Rear Axle
w/ 19,000, 21,000 lb. Rear Axle
w/ 7,000, 9,000 lb. Front Axle
 

GMC C6000 Topkick



6.0L V8 Gas,
6.6L L6 Diesel Turbo,
7.0L V8 Gas OHV Professional
w/ 23,000 lb. Rear Axle
w/ 19,000, 21,000 lb. Rear Axle
w/ 7,000, 9,000 lb. Front Axle

1 Per Vehicle
GMC C7000

10.4L V8 Diesel Turbo,
6.0L V8 Gas,
7.0L V8 Gas,
8.2L V8 Diesel,
8.2L V8 Diesel Turbo
1
 
Professional
w/ 7,000 lb. Front Axle
 

GMC C7000



10.4L V8 Diesel Turbo,
6.0L V8 Gas,
7.0L V8 Gas,
8.2L V8 Diesel,
8.2L V8 Diesel Turbo Professional
w/ 7,000 lb. Front Axle

1 Per Vehicle
GMC C7000

10.4L V8 Diesel
1
 
Professional
w/ 7,000 lb. Front Axle
 

GMC C7000



10.4L V8 Diesel Professional
w/ 7,000 lb. Front Axle

1 Per Vehicle
GMC C7000

10.4L V8 Diesel,
10.4L V8 Diesel Turbo,
6.0L V8 Gas,
6.1L L6 Diesel Turbo,
7.0L V8 Gas,
8.2L V8 Diesel,
8.2L V8 Diesel Turbo
1
 
Professional
w/ Front Disc Brakes
w/ 7,000 lb. Front Axle
 

GMC C7000



10.4L V8 Diesel,
10.4L V8 Diesel Turbo,
6.0L V8 Gas,
6.1L L6 Diesel Turbo,
7.0L V8 Gas,
8.2L V8 Diesel,
8.2L V8 Diesel Turbo Professional
w/ Front Disc Brakes
w/ 7,000 lb. Front Axle

1 Per Vehicle