Do I have to replace all my brake parts when replacing my brake cylinder?

No, but it is a good idea to inspect them for wear-out, cracking, leaking, etc

Does ACDelco offer other grades of brake cylinders?

Yes. ACDelco also offers GMOE brake cylinders

ACDelco Gold Rear Brake Cylinder

About this product

ACDelco Gold (Professional) Drum Brake Wheel Cylinder s are a high quality alternative to Original Equipment (OE) parts. They use both aluminum and iron castings making them a high quality replacement for many vehicles on the road today. These wheel cylinders contain both Ethylene Propylene (EPDM) and Styrene Butadiene (SBR) rubber components to provide superior resistance to heat, corrosion, and leakage. Formulated with a smooth bore finish, these cylinders have a quality seal to help increase the life of rubber components. ACDelco Gold (Professional) parts are manufactured to meet your expectations for fit, form, and function, making them a smart choice for General Motors vehicles, as well as most makes and models, including special applications. These high-quality parts are backed by General Motors. Some ACDelco Gold parts may have formerly appeared as ACDelco Professional.

Warning WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Meets the brake performance requirements of SAE J1153 and J1154 testing, providing reliability and quality
Pressure tested to ensure safe and confident braking
Trivalent coated bleeder screws provide extra protection and added durability
Cast iron and aluminum specifications; no extra stress on the brake boosting mounting
Some ACDelco Gold parts may have formerly appeared as ACDelco Professional
Premium aftermarket replacement part
Manufactured to meet specifications for fit, form, and function for General Motors vehicles as well as most makes and models

Product Specifications

Outside Diameter1.5 in / 38 mm

MaterialIron

Bore Diameter1.187 in / 30.16 mm

Length1.26 in / 32 mm

Casting MaterialIron

Bleeder Screw Cap IncludedYes

Cylinder Bore Diameter1.187 in / 30.16 mm

Mounting MethodInverted

Mounting Hardware IncludedNo

Piston Quantity2

Bleeder Screw IncludedYes

ClassificationGold

Mounting Hole Quantity2

Outside Diameter1.5 in / 38 mm

Bore Diameter1.187 in / 30.16 mm

Casting MaterialIron

Cylinder Bore Diameter1.187 in / 30.16 mm

Mounting Hardware IncludedNo

Bleeder Screw IncludedYes

Mounting Hole Quantity2

MaterialIron

Length1.26 in / 32 mm

Bleeder Screw Cap IncludedYes

Mounting MethodInverted

Piston Quantity2

ClassificationGold

24 Months/Unlimited Miles Limited Warranty for Parts (plus Labor if installed by a GM dealer)

Please visit our warranty page on Gmparts.com for full warranty details.

The following should be conducted by a qualified technician:

Check brake fluid level at every oil change. Replace fluid according to owner's manual recommendations.
Calipers and wheel cylinders should be checked every brake inspection and serviced or replaced as required.
Inspect the brake lines for rust, punctures, or visible leaks (You may be able to do this but consult a qualified technician if necessary).
Check the thickness of your brake pads.
Inspection of the brake hoses for brittleness or cracking.
Inspection of brake lining and pads for wear or contamination by brake fluid or grease.
Inspection of wheel bearings and grease seals.
Parking brake adjustments (as needed).

The following inspections and maintenance procedures can help prevent potential brake problems:

Check brake fluid level at every oil change. Replace fluid according to owner's manual recommendations.
Calipers and wheel cylinders should be checked every brake inspection and serviced or replaced as required.
Difficulty stopping the vehicle
A low or sinking brake pedal

Model	Body Style	Trim	Year(s)
C30			1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986
C30 Pickup			1974
C3500			1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000
Express 2500			2001, 2002
Express 3500			1996, 1997, 1998, 1999, 2000, 2001, 2002
G30			1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996
G30 Van			1974
K30			1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986
K3500			1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000
P30			1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999
P30 Van			1973, 1974
R30			1987, 1988
R3500			1989, 1990, 1991
V30			1987, 1988
V3500			1989, 1990, 1991

About this product

Warning WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Meets the brake performance requirements of SAE J1153 and J1154 testing, providing reliability and quality
Pressure tested to ensure safe and confident braking
Trivalent coated bleeder screws provide extra protection and added durability
Cast iron and aluminum specifications; no extra stress on the brake boosting mounting
Some ACDelco Gold parts may have formerly appeared as ACDelco Professional
Premium aftermarket replacement part
Manufactured to meet specifications for fit, form, and function for General Motors vehicles as well as most makes and models

Product Specifications

Outside Diameter1.5 in / 38 mm

MaterialIron

Bore Diameter1.187 in / 30.16 mm

Length1.26 in / 32 mm

Casting MaterialIron

Bleeder Screw Cap IncludedYes

Cylinder Bore Diameter1.187 in / 30.16 mm

Mounting MethodInverted

Mounting Hardware IncludedNo

Piston Quantity2

Bleeder Screw IncludedYes

ClassificationGold

Mounting Hole Quantity2

Outside Diameter1.5 in / 38 mm

Bore Diameter1.187 in / 30.16 mm

Casting MaterialIron

Cylinder Bore Diameter1.187 in / 30.16 mm

Mounting Hardware IncludedNo

Bleeder Screw IncludedYes

Mounting Hole Quantity2

MaterialIron

Length1.26 in / 32 mm

Bleeder Screw Cap IncludedYes

Mounting MethodInverted

Piston Quantity2

ClassificationGold

24 Months/Unlimited Miles Limited Warranty for Parts (plus Labor if installed by a GM dealer)

Please visit our warranty page on Gmparts.com for full warranty details.

The following should be conducted by a qualified technician:

Check brake fluid level at every oil change. Replace fluid according to owner's manual recommendations.
Calipers and wheel cylinders should be checked every brake inspection and serviced or replaced as required.
Inspect the brake lines for rust, punctures, or visible leaks (You may be able to do this but consult a qualified technician if necessary).
Check the thickness of your brake pads.
Inspection of the brake hoses for brittleness or cracking.
Inspection of brake lining and pads for wear or contamination by brake fluid or grease.
Inspection of wheel bearings and grease seals.
Parking brake adjustments (as needed).

The following inspections and maintenance procedures can help prevent potential brake problems:

Check brake fluid level at every oil change. Replace fluid according to owner's manual recommendations.
Calipers and wheel cylinders should be checked every brake inspection and serviced or replaced as required.
Difficulty stopping the vehicle
A low or sinking brake pedal

Model	Body Style	Trim	Year(s)
C30			1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986
C30 Pickup			1974
C3500			1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000
Express 2500			2001, 2002
Express 3500			1996, 1997, 1998, 1999, 2000, 2001, 2002
G30			1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996
G30 Van			1974
K30			1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986
K3500			1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000
P30			1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999
P30 Van			1973, 1974
R30			1987, 1988
R3500			1989, 1990, 1991
V30			1987, 1988
V3500			1989, 1990, 1991

About this product

Product details

Specifications

Product Specifications

Warranty

Maintenance

The following should be conducted by a qualified technician:

The following inspections and maintenance procedures can help prevent potential brake problems:

Fits these vehicles

About this product

Product details

Specifications

Product Specifications

Warranty

Maintenance

The following should be conducted by a qualified technician:

The following inspections and maintenance procedures can help prevent potential brake problems:

Fits these vehicles

Frequently Asked Questions

Do I have to replace all my brake parts when replacing my brake cylinder?

Does ACDelco offer other grades of brake cylinders?

ACDelco Gold Rear Brake Cylinder

ACDelco Gold Rear Brake Cylinder