How do you remove the master cylinder?

To remove the brake master cylinder, start by placing rags under the brake line fittings and preparing caps or plastic bags to cover the ends of the lines once they're disconnected. Then, use a flare-nut wrench to loosen the tube nuts at the ends of the brake lines where they enter the brake master cylinder. Pull the brake lines away slightly and plug the ends to prevent contamination. If the vehicle has a Rear-Wheel Anti-Lock (RWAL) brake system, remove the RWAL module. Remove the two brake master cylinder mounting nuts and set aside the bracket for the RWAL module and isolation/dump valve. Remove the brake master cylinder from the vehicle and discard any remaining fluid in the reservoir. To overhaul the brake master cylinder, mount it in a padded vise and remove the primary piston lock ring. Take out the primary and secondary piston assemblies from the cylinder bore, and remove the reservoir and grommets. Do not attempt to remove the quick take-up valve. Inspect the cylinder bore for damage and replace if necessary. Lubricate and install new reservoir grommets, then press the brake master cylinder body onto the reservoir. Install new secondary seals on the second piston assembly. For installation, attach the spring seat to the secondary piston assembly and install the primary piston assembly in the cylinder bore. Inspect and replace any damaged reservoir cover and diaphragm. Bench bleed the brake master cylinder by filling it with brake fluid and holding your fingers tightly over the holes where the brake lines normally connect. Stroke the piston several times to expel air. Carefully install the brake master cylinder by reversing the removal steps and bleed the brake system.

Genuine Chevrolet Blazer Brake Master Cylinder

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19 Brake Master Cylinders found

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Chevrolet Blazer Cylinder Kit, Brk Mas
Part Number: 84644599
$92.75 MSRP: $184.03
You Save: $91.28 (50%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Master Cylinder
- Replaces: 23398838, 84486954
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2019-2021 Chevrolet Blazer | HIGH COUNTRY/LTZ 4 DOOR SUV, L 4 DOOR SUV, LT 4 DOOR SUV, RS 4 DOOR SUV | 4 Cyl 2.5L, 6 Cyl 3.6L
View related parts
Chevrolet Blazer Cylinder Assembly, Brk Mas(W/P/B Boos&Elek Brk
Part Number: 85000376
$960.52 MSRP: $1738.50
You Save: $777.98 (45%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Master Cylinder
- Replaced by: 86804795
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021 Chevrolet Blazer | HIGH COUNTRY/LTZ 4 DOOR SUV, LT 4 DOOR SUV, RS 4 DOOR SUV | 4 Cyl 2.0L
View related parts
Chevrolet Blazer Cylinder Asm,Brake Master
Part Number: 19176498
$82.72 MSRP: $148.38
You Save: $65.66 (45%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: CYLINDER, Brake Master Cylinder
- Replaces: 18030402, 25509416
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1991 Chevrolet Blazer | 1/2 TON | 6 Cyl 2.8L, 6 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7L, 8 Cyl 6.2L Diesel
View related parts
Chevrolet Blazer Cylinder Assembly, Brk Mas(W/P/B Boos&Elek Brk
Part Number: 84933516
$960.52 MSRP: $1738.50
You Save: $777.98 (45%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Master Cylinder
- Replaced by: 86804795
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2020 Chevrolet Blazer | HIGH COUNTRY/LTZ 4 DOOR SUV, LT 4 DOOR SUV, RS 4 DOOR SUV | 4 Cyl 2.0L
View related parts
Chevrolet Blazer Repair Kit, Brake Mast Cyl
Part Number: 18007935
Product Specifications
- Other Name: CYLINDER KIT, Brake Master Cylinder; Master Cylinder Repair Kit, Overhaul Kit
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1992-1993 Chevrolet Blazer | 1/2 TON | 6 Cyl 4.3L, 8 Cyl 5.7L
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Chevrolet Blazer Master Cyl. Asm. Pkg.
Part Number: 18013435
Product Specifications
- Other Name: CYLINDER, Brake Master Cylinder
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1991 Chevrolet Blazer | 1/2 TON | 6 Cyl 2.8L, 6 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7L, 8 Cyl 6.2L Diesel
View related parts
Chevrolet Blazer Cylinder Asm,Brake Master
Part Number: 18060157
Product Specifications
- Other Name: CYLINDER, Brake Master Cylinder
- Replaces: 18017378
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1991 Chevrolet Blazer | 1/2 TON | 6 Cyl 2.8L, 6 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7L, 8 Cyl 6.2L Diesel
View related parts
Chevrolet Blazer CYLINDER
Part Number: 18040249
Product Specifications
- Other Name: CYLINDER, Brake Master Cylinder
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2001-2002 Chevrolet Blazer | 2 DOOR, 4 DOOR | 6 Cyl 4.3L
- 1999 Chevrolet Blazer | 2 DOOR, 4 DOOR
View related parts
Chevrolet Blazer Cylinder Kit,Brake Master Cylinder Repair
Part Number: 18029851
Product Specifications
- Other Name: CYLINDER KIT, Brake Master Cylinder
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1997 Chevrolet Blazer | 2 DOOR, 4 DOOR | 6 Cyl 4.3L
View related parts
Chevrolet Blazer Cylinder Kit,Brake Master
Part Number: 18022970
Product Specifications
- Other Name: CYLINDER KIT, Brake Master Cylinder; Overhaul Kit
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1995-1997 Chevrolet Blazer | 2 DOOR, 4 DOOR | 6 Cyl 4.3L
View related parts
Chevrolet Blazer Cylinder Asm,Brake Master
Part Number: 19209258
Product Specifications
- Other Name: CYLINDER, Brake Master Cylinder
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1992-1993 Chevrolet Blazer | 1/2 TON | 6 Cyl 4.3L, 8 Cyl 5.7L
View related parts
Chevrolet Blazer Cylinder Assembly, Brake Master
Part Number: 14066425
Product Specifications
- Other Name: CYLINDER, Brake Master Cylinder
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1991 Chevrolet Blazer | 1/2 TON | 6 Cyl 2.8L, 6 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7L, 8 Cyl 6.2L Diesel
View related parts
Chevrolet Blazer Cylinder Assembly, Brake Master
Part Number: 18014705
Product Specifications
- Other Name: CYLINDER, Brake Master Cylinder
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1991 Chevrolet Blazer | 1/2 TON | 6 Cyl 2.8L, 6 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7L, 8 Cyl 6.2L Diesel
View related parts
Chevrolet Blazer Cylinder,Brake Master
Part Number: 18029949
Product Specifications
- Other Name: CYLINDER, Brake Master Cylinder; Master Cylinder
- Replaces: 18022969
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1995-1997 Chevrolet Blazer | 2 DOOR, 4 DOOR | 6 Cyl 4.3L
View related parts
Chevrolet Blazer Cylinder Asm,Brake Master
Part Number: 19209222
Product Specifications
- Other Name: CYLINDER, Brake Master Cylinder; Master Cylinder
- Replaces: 18021275, 18029968
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1994 Chevrolet Blazer | 1/2 TON | 6 Cyl 4.3L, 8 Cyl 5.7L, 8 Cyl 6.5L Diesel
View related parts
Chevrolet Blazer Cylinder Asm,Brake Master
Part Number: 19209269
Product Specifications
- Other Name: CYLINDER, Brake Master Cylinder; Master Cylinder
- Replaces: 18060793, 18042802
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2001-2002 Chevrolet Blazer | 2 DOOR, 4 DOOR | 6 Cyl 4.3L
View related parts
Chevrolet Blazer Cylinder Asm,Brake Master
Part Number: 19209221
Product Specifications
- Other Name: CYLINDER, Brake Master Cylinder
- Replaces: 18021273, 18029967
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1994 Chevrolet Blazer | 1/2 TON | 6 Cyl 4.3L, 8 Cyl 5.7L, 8 Cyl 6.5L Diesel
View related parts
Chevrolet Blazer Cylinder Asm,Brake Master
Part Number: 18060087
Product Specifications
- Other Name: CYLINDER, Brake Master Cylinder; Master Cylinder
- Replaces: 18013978
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1992-1993 Chevrolet Blazer | 1/2 TON | 6 Cyl 4.3L, 8 Cyl 5.7L
View related parts
Chevrolet Blazer Cylinder Asm,Brake Master
Part Number: 18029852
Product Specifications
- Other Name: CYLINDER, Brake Master Cylinder
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1997 Chevrolet Blazer | 2 DOOR, 4 DOOR | 6 Cyl 4.3L

Chevrolet Blazer Brake Master Cylinder Parts Questions & Experts Answers

CYLINDER
18040249
Q: How do you remove the master cylinder?
A: To remove the brake master cylinder, start by placing rags under the brake line fittings and preparing caps or plastic bags to cover the ends of the lines once they're disconnected. Then, use a flare-nut wrench to loosen the tube nuts at the ends of the brake lines where they enter the brake master cylinder. Pull the brake lines away slightly and plug the ends to prevent contamination. If the vehicle has a Rear-Wheel Anti-Lock (RWAL) brake system, remove the RWAL module. Remove the two brake master cylinder mounting nuts and set aside the bracket for the RWAL module and isolation/dump valve. Remove the brake master cylinder from the vehicle and discard any remaining fluid in the reservoir. To overhaul the brake master cylinder, mount it in a padded vise and remove the primary piston lock ring. Take out the primary and secondary piston assemblies from the cylinder bore, and remove the reservoir and grommets. Do not attempt to remove the quick take-up valve. Inspect the cylinder bore for damage and replace if necessary. Lubricate and install new reservoir grommets, then press the brake master cylinder body onto the reservoir. Install new secondary seals on the second piston assembly. For installation, attach the spring seat to the secondary piston assembly and install the primary piston assembly in the cylinder bore. Inspect and replace any damaged reservoir cover and diaphragm. Bench bleed the brake master cylinder by filling it with brake fluid and holding your fingers tightly over the holes where the brake lines normally connect. Stroke the piston several times to expel air. Carefully install the brake master cylinder by reversing the removal steps and bleed the brake system.

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