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ACDelco 18M1887 Brake Master Cylinder

ACDelco 18M1887 Brake Master Cylinder Image 1
ACDelco 18M1887 Brake Master Cylinder Image 2
ACDelco 18M1887 Brake Master Cylinder Image 3
ACDelco 18M1887 Brake Master Cylinder Image 4
ACDelco 18M1887 Brake Master Cylinder Image 5
ACDelco 18M1887 Brake Master Cylinder Image 6
ACDelco 18M1887 Brake Master Cylinder Image 7
ACDelco 18M1887 Brake Master Cylinder Image 8
ACDelco 18M1887 Brake Master Cylinder

ACDelco
Brand:ACDelco
Part Number: 18M1887
UPC: 00707773311929
Weight: 8.57 lbs
Condition:New



On Sale:

$157.97

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

Product Information

Description:

Get the ACDelco 18M1887 Brake Master Cylinder for your vehicle. Buy now and secure your purchase online!

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:
34.000 mm
Brake Booster Included:
No
Height (in):
6.38 in
Length (in):
11.5 in
Master Cylinder Bore Diameter (in):
1.338582677 in
Master Cylinder Bore Diameter:
34 mm
Master Cylinder Cap Included:
Yes
Master Cylinder Material:
Iron
Measurements:
13 X 3 1/2 in
Mounting Bracket Included:
No
Mounting Hole Diameter:
0.433 in.
Mounting Hole Quantity:
2
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):
8.57 lb
Width (in):
8 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:
CN

Select a vehicle to narrow ACDelco 18M1887 Brake Master Cylinder fitment info!

Last Updated: 03/09/2024

Years Vehicle Per Vehicle Fit NotesFitment Notes
Chevrolet C3500HD

5.7L V8 Gas OHV,
7.4L V8 Gas OHV
1
 
Professional
 

Chevrolet C3500HD



5.7L V8 Gas OHV,
7.4L V8 Gas OHV Professional

1 Per Vehicle
Chevrolet G30

5.7L V8 CNG OHV
1
 
Professional
with Hydraulic Booster
 

Chevrolet G30



5.7L V8 CNG OHV Professional
with Hydraulic Booster

1 Per Vehicle
Chevrolet G30

6.5L V8 Diesel OHV
1
 
Professional
with Hydraulic Booster
 

Chevrolet G30



6.5L V8 Diesel OHV Professional
with Hydraulic Booster

1 Per Vehicle
Chevrolet G30

7.4L V8 Gas OHV
1
 
Professional
with Hydraulic Booster
 

Chevrolet G30



7.4L V8 Gas OHV Professional
with Hydraulic Booster

1 Per Vehicle
Chevrolet G30

4.3L V6 Gas OHV,
5.7L V8 Gas OHV
1
 
Professional
with Hydraulic Booster
 

Chevrolet G30



4.3L V6 Gas OHV,
5.7L V8 Gas OHV Professional
with Hydraulic Booster

1 Per Vehicle
Chevrolet G30

6.2L V8 Diesel OHV
1
 
Professional
with Hydraulic Booster
 

Chevrolet G30



6.2L V8 Diesel OHV Professional
with Hydraulic Booster

1 Per Vehicle
Chevrolet G30

5.0L V8 Gas OHV
1
 
Professional
with Hydraulic Booster
 

Chevrolet G30



5.0L V8 Gas OHV Professional
with Hydraulic Booster

1 Per Vehicle
Chevrolet G30

6.2L V8 Diesel OHV
1
 
Professional
with 13 IN x 3-1/2 IN Brakes
 

Chevrolet G30



6.2L V8 Diesel OHV Professional
with 13 IN x 3-1/2 IN Brakes

1 Per Vehicle
Chevrolet G30

4.1L L6 Gas OHV
1
 
Professional
with 13 IN x 3-1/2 IN Brakes
 

Chevrolet G30



4.1L L6 Gas OHV Professional
with 13 IN x 3-1/2 IN Brakes

1 Per Vehicle
Chevrolet G30

5.7L V8 Gas OHV
1
 
Professional
with 13 IN x 3-1/2 IN Brakes
 

Chevrolet G30



5.7L V8 Gas OHV Professional
with 13 IN x 3-1/2 IN Brakes

1 Per Vehicle
Chevrolet G30

5.0L V8 Gas OHV
1
 
Professional
with 13 IN x 3-1/2 IN Brakes
 

Chevrolet G30



5.0L V8 Gas OHV Professional
with 13 IN x 3-1/2 IN Brakes

1 Per Vehicle
Chevrolet G30

6.6L V8 Gas OHV
1
 
Professional
with 13 IN x 3-1/2 IN Brakes
 

Chevrolet G30



6.6L V8 Gas OHV Professional
with 13 IN x 3-1/2 IN Brakes

1 Per Vehicle
Chevrolet G30

4.1L L6 Gas OHV,
5.0L V8 Gas OHV
1
 
Professional
with 13 IN x 3-1/2 IN Brakes
 

Chevrolet G30



4.1L L6 Gas OHV,
5.0L V8 Gas OHV Professional
with 13 IN x 3-1/2 IN Brakes

1 Per Vehicle
Chevrolet G30

4.8L L6 Gas OHV
1
 
Professional
with 13 IN x 3-1/2 IN Brakes
 

Chevrolet G30



4.8L L6 Gas OHV Professional
with 13 IN x 3-1/2 IN Brakes

1 Per Vehicle
Chevrolet G30

4.1L L6 Gas OHV,
7.4L V8 Gas OHV
1
 
Professional
with 13 IN x 3-1/2 IN Brakes
 

Chevrolet G30



4.1L L6 Gas OHV,
7.4L V8 Gas OHV Professional
with 13 IN x 3-1/2 IN Brakes

1 Per Vehicle
Chevrolet P30

4.3L V6 Gas OHV,
5.7L V8 Gas OHV,
6.5L V8 Diesel OHV,
6.5L V8 Diesel OHV Turbo,
7.4L V8 Gas OHV
1
 
Professional
w/ Forward Control Chassis
Rear Disc
Stripped Chassis
 

Chevrolet P30



4.3L V6 Gas OHV,
5.7L V8 Gas OHV,
6.5L V8 Diesel OHV,
6.5L V8 Diesel OHV Turbo,
7.4L V8 Gas OHV Professional
w/ Forward Control Chassis
Rear Disc
Stripped Chassis

1 Per Vehicle
Chevrolet P30

4.3L V6 Gas OHV,
5.7L V8 Gas OHV,
6.5L V8 Diesel OHV,
6.5L V8 Diesel OHV Turbo,
7.4L V8 Gas OHV
1
 
Professional
with Single Rear Wheels (SRW)
w/ 13 x 3 1/2 Rear Brakes
Rear Drum
Cab & Chassis
 

Chevrolet P30



4.3L V6 Gas OHV,
5.7L V8 Gas OHV,
6.5L V8 Diesel OHV,
6.5L V8 Diesel OHV Turbo,
7.4L V8 Gas OHV Professional
with Single Rear Wheels (SRW)
w/ 13 x 3 1/2 Rear Brakes
Rear Drum
Cab & Chassis

1 Per Vehicle
Chevrolet P30

6.5L V8 Diesel OHV,
6.5L V8 Diesel OHV Turbo
1
 
Professional
Rear Disc
Stripped Chassis
 

Chevrolet P30



6.5L V8 Diesel OHV,
6.5L V8 Diesel OHV Turbo Professional
Rear Disc
Stripped Chassis

1 Per Vehicle
Chevrolet P30

6.5L V8 Diesel OHV,
6.5L V8 Diesel OHV Turbo
1
 
Professional
w/ 13 x 3 1/2 Rear Brakes
Rear Drum
Cab & Chassis
 

Chevrolet P30



6.5L V8 Diesel OHV,
6.5L V8 Diesel OHV Turbo Professional
w/ 13 x 3 1/2 Rear Brakes
Rear Drum
Cab & Chassis

1 Per Vehicle
Chevrolet P30

4.3L V6 Gas OHV,
5.7L V8 Gas OHV,
7.4L V8 Gas OHV
1
 
Professional
Rear Disc
Stripped Chassis
 

Chevrolet P30



4.3L V6 Gas OHV,
5.7L V8 Gas OHV,
7.4L V8 Gas OHV Professional
Rear Disc
Stripped Chassis

1 Per Vehicle
Chevrolet P30

4.3L V6 Gas OHV,
5.7L V8 Gas OHV,
7.4L V8 Gas OHV
1
 
Professional
w/ 13 x 3 1/2 Rear Brakes
Rear Drum
Cab & Chassis
 

Chevrolet P30



4.3L V6 Gas OHV,
5.7L V8 Gas OHV,
7.4L V8 Gas OHV Professional
w/ 13 x 3 1/2 Rear Brakes
Rear Drum
Cab & Chassis

1 Per Vehicle
Chevrolet P30

6.2L V8 Diesel OHV
1
 
Professional
Rear Disc
Stripped Chassis
 

Chevrolet P30



6.2L V8 Diesel OHV Professional
Rear Disc
Stripped Chassis

1 Per Vehicle
Chevrolet P30

6.2L V8 Diesel OHV
1
 
Professional
w/ 13 x 3 1/2 Rear Brakes
Rear Drum
Cab & Chassis
 

Chevrolet P30



6.2L V8 Diesel OHV Professional
w/ 13 x 3 1/2 Rear Brakes
Rear Drum
Cab & Chassis

1 Per Vehicle
Chevrolet P30

4.3L V6 Gas OHV
1
 
Professional
Rear Disc
 

Chevrolet P30



4.3L V6 Gas OHV Professional
Rear Disc

1 Per Vehicle
Chevrolet P30

6.2L V8 Diesel OHV
1
 
Professional
Rear Disc
 

Chevrolet P30



6.2L V8 Diesel OHV Professional
Rear Disc

1 Per Vehicle
Chevrolet P30

5.7L V8 Gas OHV,
7.4L V8 Gas OHV
1
 
Professional
Rear Disc
 

Chevrolet P30



5.7L V8 Gas OHV,
7.4L V8 Gas OHV Professional
Rear Disc

1 Per Vehicle
Chevrolet P30

3.9L L4 Diesel OHV Turbo
1
 
Professional
Rear Disc
 

Chevrolet P30



3.9L L4 Diesel OHV Turbo Professional
Rear Disc

1 Per Vehicle
Chevrolet P30

4.8L L6 Gas OHV
1
 
Professional
Rear Disc
 

Chevrolet P30



4.8L L6 Gas OHV Professional
Rear Disc

1 Per Vehicle
Chevrolet P30

4.1L L6 Gas OHV
1
 
Professional
Rear Disc
 

Chevrolet P30



4.1L L6 Gas OHV Professional
Rear Disc

1 Per Vehicle
Chevrolet P30

4.8L L6 Gas OHV,
5.7L V8 Gas OHV,
7.4L V8 Gas OHV
1
 
Professional
without 15000lb GVW
Reservoir Cap Is Rectangular
Bore 34mm
Front Disc
Rear Disc
 

Chevrolet P30



4.8L L6 Gas OHV,
5.7L V8 Gas OHV,
7.4L V8 Gas OHV Professional
without 15000lb GVW
Reservoir Cap Is Rectangular
Bore 34mm
Front Disc
Rear Disc

1 Per Vehicle
GMC C3500HD

5.7L V8 Gas OHV,
7.4L V8 Gas OHV
1
 
Professional
 

GMC C3500HD



5.7L V8 Gas OHV,
7.4L V8 Gas OHV Professional

1 Per Vehicle
GMC G35

4.1L L6 Gas OHV
1
 
Professional
with 13 IN x 3-1/2 IN Brakes
 

GMC G35



4.1L L6 Gas OHV Professional
with 13 IN x 3-1/2 IN Brakes

1 Per Vehicle
GMC G35

4.8L L6 Gas OHV,
5.7L V8 Gas OHV,
6.6L V8 Gas OHV
1
 
Professional
with 13 IN x 3-1/2 IN Brakes
 

GMC G35



4.8L L6 Gas OHV,
5.7L V8 Gas OHV,
6.6L V8 Gas OHV Professional
with 13 IN x 3-1/2 IN Brakes

1 Per Vehicle
GMC G35

7.4L V8 Gas OHV
1
 
Professional
with 13 IN x 3-1/2 IN Brakes
 

GMC G35



7.4L V8 Gas OHV Professional
with 13 IN x 3-1/2 IN Brakes

1 Per Vehicle
GMC G3500

5.7L V8 CNG OHV
1
 
Professional
with Hydraulic Booster
 

GMC G3500



5.7L V8 CNG OHV Professional
with Hydraulic Booster

1 Per Vehicle
GMC G3500

6.5L V8 Diesel OHV
1
 
Professional
with Hydraulic Booster
 

GMC G3500



6.5L V8 Diesel OHV Professional
with Hydraulic Booster

1 Per Vehicle
GMC G3500

7.4L V8 Gas OHV
1
 
Professional
with Hydraulic Booster
 

GMC G3500



7.4L V8 Gas OHV Professional
with Hydraulic Booster

1 Per Vehicle
GMC G3500

4.3L V6 Gas OHV,
5.7L V8 Gas OHV
1
 
Professional
with Hydraulic Booster
 

GMC G3500



4.3L V6 Gas OHV,
5.7L V8 Gas OHV Professional
with Hydraulic Booster

1 Per Vehicle
GMC G3500

6.2L V8 Diesel OHV
1
 
Professional
with Hydraulic Booster
 

GMC G3500



6.2L V8 Diesel OHV Professional
with Hydraulic Booster

1 Per Vehicle
GMC G3500

6.2L V8 Diesel OHV
1
 
Professional
with 13 IN x 3-1/2 IN Brakes
 

GMC G3500



6.2L V8 Diesel OHV Professional
with 13 IN x 3-1/2 IN Brakes

1 Per Vehicle
GMC G3500

4.1L L6 Gas OHV
1
 
Professional
with 13 IN x 3-1/2 IN Brakes
 

GMC G3500



4.1L L6 Gas OHV Professional
with 13 IN x 3-1/2 IN Brakes

1 Per Vehicle
GMC G3500

5.7L V8 Gas OHV
1
 
Professional
with 13 IN x 3-1/2 IN Brakes
 

GMC G3500



5.7L V8 Gas OHV Professional
with 13 IN x 3-1/2 IN Brakes

1 Per Vehicle
GMC G3500

6.6L V8 Gas OHV
1
 
Professional
with 13 IN x 3-1/2 IN Brakes
 

GMC G3500



6.6L V8 Gas OHV Professional
with 13 IN x 3-1/2 IN Brakes

1 Per Vehicle
GMC G3500

4.1L L6 Gas OHV
1
 
Professional
with 13 IN x 3-1/2 IN Brakes
 

GMC G3500



4.1L L6 Gas OHV Professional
with 13 IN x 3-1/2 IN Brakes

1 Per Vehicle
GMC P35

4.8L L6 Gas OHV,
5.7L V8 Gas OHV,
7.4L V8 Gas OHV
1
 
Professional
Reservoir Cap Is Rectangular
Bore 34mm
Front Disc
Rear Disc
 

GMC P35



4.8L L6 Gas OHV,
5.7L V8 Gas OHV,
7.4L V8 Gas OHV Professional
Reservoir Cap Is Rectangular
Bore 34mm
Front Disc
Rear Disc

1 Per Vehicle
GMC P3500

4.3L V6 Gas OHV,
5.7L V8 Gas OHV,
6.5L V8 Diesel OHV,
7.4L V8 Gas OHV
1
 
Professional
w/ Forward Control Chassis
Rear Disc
Stripped Chassis
 

GMC P3500



4.3L V6 Gas OHV,
5.7L V8 Gas OHV,
6.5L V8 Diesel OHV,
7.4L V8 Gas OHV Professional
w/ Forward Control Chassis
Rear Disc
Stripped Chassis

1 Per Vehicle
GMC P3500

4.3L V6 Gas OHV,
5.7L V8 Gas OHV,
6.5L V8 Diesel OHV,
7.4L V8 Gas OHV
1
 
Professional
with Single Rear Wheels (SRW)
w/ 13 x 3 1/2 Rear Shoes, w/ JB8 Brake Code
Rear Drum
Cab & Chassis
 

GMC P3500



4.3L V6 Gas OHV,
5.7L V8 Gas OHV,
6.5L V8 Diesel OHV,
7.4L V8 Gas OHV Professional
with Single Rear Wheels (SRW)
w/ 13 x 3 1/2 Rear Shoes, w/ JB8 Brake Code
Rear Drum
Cab & Chassis

1 Per Vehicle
GMC P3500

4.3L V6 Gas OHV,
5.7L V8 Gas OHV,
6.5L V8 Diesel OHV,
7.4L V8 Gas OHV
1
 
Professional
w/ 13 x 3 1/2 Rear Shoes, w/ JB8 Brake Code
Cab & Chassis
 

GMC P3500



4.3L V6 Gas OHV,
5.7L V8 Gas OHV,
6.5L V8 Diesel OHV,
7.4L V8 Gas OHV Professional
w/ 13 x 3 1/2 Rear Shoes, w/ JB8 Brake Code
Cab & Chassis

1 Per Vehicle
GMC P3500

6.5L V8 Diesel OHV
1
 
Professional
Rear Disc
Stripped Chassis
 

GMC P3500



6.5L V8 Diesel OHV Professional
Rear Disc
Stripped Chassis

1 Per Vehicle
GMC P3500

4.3L V6 Gas OHV,
5.7L V8 Gas OHV,
7.4L V8 Gas OHV
1
 
Professional
Rear Disc
Stripped Chassis
 

GMC P3500



4.3L V6 Gas OHV,
5.7L V8 Gas OHV,
7.4L V8 Gas OHV Professional
Rear Disc
Stripped Chassis

1 Per Vehicle
GMC P3500

4.3L V6 Gas OHV,
5.7L V8 Gas OHV,
6.2L V8 Diesel OHV,
7.4L V8 Gas OHV
1
 
Professional
with 13 IN x 3-1/2 IN Brakes
Rear Drum
Cab & Chassis
 

GMC P3500



4.3L V6 Gas OHV,
5.7L V8 Gas OHV,
6.2L V8 Diesel OHV,
7.4L V8 Gas OHV Professional
with 13 IN x 3-1/2 IN Brakes
Rear Drum
Cab & Chassis

1 Per Vehicle
GMC P3500

6.2L V8 Diesel OHV
1
 
Professional
Rear Disc
Stripped Chassis
 

GMC P3500



6.2L V8 Diesel OHV Professional
Rear Disc
Stripped Chassis

1 Per Vehicle
GMC P3500

4.3L V6 Gas OHV
1
 
Professional
Rear Disc
 

GMC P3500



4.3L V6 Gas OHV Professional
Rear Disc

1 Per Vehicle
GMC P3500

6.2L V8 Diesel OHV
1
 
Professional
Rear Disc
 

GMC P3500



6.2L V8 Diesel OHV Professional
Rear Disc

1 Per Vehicle
GMC P3500

5.7L V8 Gas OHV,
7.4L V8 Gas OHV
1
 
Professional
Rear Disc
 

GMC P3500



5.7L V8 Gas OHV,
7.4L V8 Gas OHV Professional
Rear Disc

1 Per Vehicle
GMC P3500

3.9L L4 Diesel OHV Turbo
1
 
Professional
Rear Disc
 

GMC P3500



3.9L L4 Diesel OHV Turbo Professional
Rear Disc

1 Per Vehicle
GMC P3500

4.8L L6 Gas OHV
1
 
Professional
Rear Disc
 

GMC P3500



4.8L L6 Gas OHV Professional
Rear Disc

1 Per Vehicle
Hummer H1

6.5L V8 Diesel OHV Turbo
1
 
Professional
with 12100lb GVW
 

Hummer H1



6.5L V8 Diesel OHV Turbo Professional
with 12100lb GVW

1 Per Vehicle