How to service and repair the Brake Master Cylinder on Chevrolet Astro?

When fixing the Brake Master Cylinder start by clamping its mounting flange in a workshop vise so you can reach the rear of the main Piston. Set up suitable brake fittings to the master cylinder ports for hose attachment following flare seat specifications. Install transparent hoses to these fittings and lead them to the master cylinder reservoir. Put delco supreme 11(R) brake fluid gm p/n 12377967 or its dot-3 brand equivalent into the reservoir through one end of the transparent hose lines until the fluid reaches half the container while keeping both hose tips fully under liquid. Use a rounded-end tool to control the primary Piston up and down multiple times; look at the fluid flowing from the ports. At the same time the primary Piston becomes harder to press and moves less with each bleed cycle. Repeat this step until clear fluid comes out smoothly from both ports without air present. When complete remove the transparent hoses from the reservoir then replace the master cylinder parts before disconnecting the hoses from their ports and putting down the master cylinder with a shop cloth to prepare for removal.

OEM Chevrolet Astro Brake Master Cylinder

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10 Brake Master Cylinders found

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Chevrolet Astro Master Cylinder
Part Number: 18029964
$194.99 MSRP: $360.76
You Save: $165.77 (46%)
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Product Specifications
- Other Name: Cylinder, Brake Master Cylinder; Brake Master Cylinder
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1990-1994 Chevrolet Astro | Base, CL, CS, LT | 4 Cyl 2.5 L GAS, 6 Cyl 4.3 L GAS
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Chevrolet Astro Master Cylinder
Part Number: 18029963
$173.93 MSRP: $321.80
You Save: $147.87 (46%)
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Product Specifications
- Other Name: Cylinder, Brake Master Cylinder; Brake Master Cylinder
- Replaces: 18015414
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1995, 1990 Chevrolet Astro | Base, CL, CS, LT | 4 Cyl 2.5 L GAS, 6 Cyl 4.3 L GAS
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Chevrolet Astro Master Cylinder
Part Number: 18047529
Product Specifications
- Other Name: Cylinder, Brake Master Cylinder; Brake Master Cylinder
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2003 Chevrolet Astro | Base, LS, LT | 6 Cyl 4.3 L GAS
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Chevrolet Astro Overhaul Kit
Part Number: 18011029
Product Specifications
- Other Name: Cylinder Kit, Brake Master; Repair Kit, Brake Master Cylinder
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1995, 1990 Chevrolet Astro | Base, CL, CS, LT | 4 Cyl 2.5 L GAS, 6 Cyl 4.3 L GAS
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Chevrolet Astro Master Cylinder
Part Number: 19209257
Product Specifications
- Other Name: Cylinder, Brake Master Cylinder; Brake Master Cylinder
- Replaces: 18048897
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2003-2005 Chevrolet Astro | Base, LS, LT | 6 Cyl 4.3 L GAS
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Chevrolet Astro Master Cylinder
Part Number: 18047594
Product Specifications
- Other Name: Cylinder, Brake Master Cylinder; Brake Master Cylinder
- Replaces: 18029952
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-2002 Chevrolet Astro | Base, LS, LT | 6 Cyl 4.3 L GAS
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Chevrolet Astro Overhaul Kit
Part Number: 18047531
Product Specifications
- Other Name: Cylinder Kit; Cylinder Kit, Brake Master Cylinder
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2003-2005 Chevrolet Astro | Base, LS, LT | 6 Cyl 4.3 L GAS
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Chevrolet Astro Overhaul Kit
Part Number: 18023274
Product Specifications
- Other Name: Cylinder Kit, Brake Master Cylinder
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-2002 Chevrolet Astro | Base, LS, LT | 6 Cyl 4.3 L GAS
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Chevrolet Astro Master Cylinder
Part Number: 18013440
Product Specifications
- Other Name: Master Cylinder Assembly Package; Brake Master Cylinder; Cylinder, Brake Master Cylinder
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1989 Chevrolet Astro | Base, CL, CS, LT | 4 Cyl 2.5 L GAS, 6 Cyl 4.3 L GAS
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Chevrolet Astro Overhaul Kit
Part Number: 18012918
Product Specifications
- Other Name: Cylinder Kit, Brake Master; Master Cylinder Repair Kit; Cylinder Kit, Brake Master Cylinder; Repair Kit, Brake Master Cylinder
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1994 Chevrolet Astro | Base, CL, CS, LT | 4 Cyl 2.5 L GAS, 6 Cyl 4.3 L GAS

Chevrolet Astro Brake Master Cylinder

Our website offers an extensive catalog of genuine Chevrolet Astro Brake Master Cylinder at unbeatable prices. Every OEM Chevrolet Astro Brake Master Cylinder comes with a manufacturer's warranty, an easy return policy, and rapid delivery service. Don't miss out on this great opportunity!

Chevrolet Astro Brake Master Cylinder Parts Questions & Experts Answers

Master Cylinder
18047594
Q: How to service and repair the Brake Master Cylinder on Chevrolet Astro?
A: When fixing the Brake Master Cylinder start by clamping its mounting flange in a workshop vise so you can reach the rear of the main Piston. Set up suitable brake fittings to the master cylinder ports for hose attachment following flare seat specifications. Install transparent hoses to these fittings and lead them to the master cylinder reservoir. Put delco supreme 11(R) brake fluid gm p/n 12377967 or its dot-3 brand equivalent into the reservoir through one end of the transparent hose lines until the fluid reaches half the container while keeping both hose tips fully under liquid. Use a rounded-end tool to control the primary Piston up and down multiple times; look at the fluid flowing from the ports. At the same time the primary Piston becomes harder to press and moves less with each bleed cycle. Repeat this step until clear fluid comes out smoothly from both ports without air present. When complete remove the transparent hoses from the reservoir then replace the master cylinder parts before disconnecting the hoses from their ports and putting down the master cylinder with a shop cloth to prepare for removal.

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