How to overhaul the brake master cylinder on Chevrolet Blazer?

Start Brake Master Cylinder overhauling by taking out the component from your vehicle and locking the mounting flange in a bench vise to access the rear of the primary Piston. Prepare the reservoir area first then unscrew the cap along with the diaphragm to check for damage that needs replacement. Use the tool to slowly push down on the primary Piston while removing its retainer parts and finally the Piston assembly from the cylinder. Jam all cylinder intake and back outlet holes after hooking front outlet to a filtered hver source that pumps out low pressure air to unravel the secondary Piston with its secondary and primary seals plus return spring. Keep both items for recycling while discarding the main Piston set. Wash the areas inside and outside of the master cylinder as well as the secondary Piston and return spring. Use denatured alcohol for cleaning before inspecting for damage. Replace the master cylinder if you spot cracks, surface issues, or chemical reactions. Dry all parts using filtered air that does not contain lubricant while you apply brake fluid from a sealed container to the master cylinder bore as well as the secondary Piston and return spring. Install the new primary seal and retainer components together with the secondary seal onto the secondary Piston. Also insert the return spring and secondary Piston assembly which you previously lubricated inside the cylinder bore. Put the new lubricated primary Piston assembly into place at the end. Use a flat tool to press down the primary Piston while installing its new retainer before fitting back the master cylinder equipment.

OEM Chevrolet Blazer Brake Master Cylinder

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10 Brake Master Cylinders found

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Chevrolet Blazer Master Cylinder Part Number: 84644599
$100.86 MSRP: $197.47
You Save: $96.61 (49%)
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Product Specifications
- Other Name: Cylinder Kit, Brake Master Cylinder; Brake Master Cylinder
- Replaces: 23398838, 84486954
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2019-2024 Chevrolet Blazer | Base, L, LT, Premier, RS | 4 Cyl 2.5 L GAS, 6 Cyl 3.6 L GAS
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Chevrolet Blazer Overhaul Kit Part Number: 18007935
Product Specifications
- Other Name: Cylinder Kit, Brake Master Cylinder; Master Cylinder Repair Kit
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1992-1993 Chevrolet Blazer | Cheyenne, Silverado | 8 Cyl 5.7 L GAS
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Chevrolet Blazer Master Cylinder Part Number: 18026274
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:
- 1998-1999 Chevrolet Blazer | Base, LS, LT, Trailblazer | 6 Cyl 4.3 L GAS
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Chevrolet Blazer Master Cylinder Part Number: 18013433
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:
- 1995 Chevrolet Blazer | Base | 6 Cyl 4.3 L GAS
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Chevrolet Blazer 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:
- 1994 Chevrolet Blazer | Base, Silverado, Silverado Sport | 8 Cyl 5.7 L GAS, 8 Cyl 6.5 L DIESEL
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Chevrolet Blazer Overhaul Kit Part Number: 18010083
Product Specifications
- Other Name: Cylinder Kit, Brake Master; Master Cylinder Repair Kit; Cylinder Kit, Brake Master Cylinder
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1995 Chevrolet Blazer | Base | 6 Cyl 4.3 L GAS
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Chevrolet Blazer Master Cylinder Part Number: 86804795
$964.87 MSRP: $1738.50
You Save: $773.63 (45%)
Product Specifications
- Other Name: Cylinder, Brake Master Cylinder; Master Cylinder Assembly
- Replaces: 84933516, 85124317, 84719299, 85534582, 85000376, 84836018
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2020-2024 Chevrolet Blazer | LT, Premier, RS | 4 Cyl 2.0 L GAS
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Chevrolet Blazer Master Cylinder Part Number: 19209269
Product Specifications
- Other Name: Cylinder, Brake Master Cylinder; Brake Master Cylinder
- Replaces: 18042802, 18060793
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2000-2005 Chevrolet Blazer | Base, LS, LT, Trailblazer, Xtreme, ZR2 | 6 Cyl 4.3 L GAS
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Chevrolet Blazer Master Cylinder Part Number: 18029949
Product Specifications
- Other Name: Cylinder, Brake Master Cylinder; Brake Master Cylinder
- Replaces: 18022969
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-1997 Chevrolet Blazer | Base, LS, LT | 6 Cyl 4.3 L GAS
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Chevrolet Blazer Overhaul Kit Part Number: 18022970
Product Specifications
- Other Name: Cylinder Kit, Brake Master; Cylinder Kit, Brake Master Cylinder
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-1997 Chevrolet Blazer | Base, LS, LT | 6 Cyl 4.3 L GAS

Chevrolet Blazer Brake Master Cylinder

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Brake master cylinder in Chevrolet Blazer is a part of the braking system which translates the foot force exerted by a driver into hydraulic pressure. This hydraulic pressure is used to move the slave cylinders to apply the brakes and thereby build the friction required to bring the vehicle to standstill. The Chevrolet Blazer generally includes a dual circuit master cylinder configuration so that in case of a problem with one circuit, at least the other one can supply adequate braking for the vehicle. GM has offered the Chevrolet Blazer Brake Master Cylinders with either cast iron or aluminum housing and can include an integrated fluid reservoir or a separate reservoir. The integral reservoirs have a single cap, while external ones can be with one threaded cap or twin. It is also important to notice that sometimes fluid leaks or internal failures may appear and that is why it is crucial to inspect the VCR and maintain it as better as possible.

Chevrolet Blazer Brake Master Cylinder Parts and Q&A

Master Cylinder
19209269
Q: How to overhaul the brake master cylinder on Chevrolet Blazer?
A:
Start Brake Master Cylinder overhauling by taking out the component from your vehicle and locking the mounting flange in a bench vise to access the rear of the primary Piston. Prepare the reservoir area first then unscrew the cap along with the diaphragm to check for damage that needs replacement. Use the tool to slowly push down on the primary Piston while removing its retainer parts and finally the Piston assembly from the cylinder. Jam all cylinder intake and back outlet holes after hooking front outlet to a filtered hver source that pumps out low pressure air to unravel the secondary Piston with its secondary and primary seals plus return spring. Keep both items for recycling while discarding the main Piston set. Wash the areas inside and outside of the master cylinder as well as the secondary Piston and return spring. Use denatured alcohol for cleaning before inspecting for damage. Replace the master cylinder if you spot cracks, surface issues, or chemical reactions. Dry all parts using filtered air that does not contain lubricant while you apply brake fluid from a sealed container to the master cylinder bore as well as the secondary Piston and return spring. Install the new primary seal and retainer components together with the secondary seal onto the secondary Piston. Also insert the return spring and secondary Piston assembly which you previously lubricated inside the cylinder bore. Put the new lubricated primary Piston assembly into place at the end. Use a flat tool to press down the primary Piston while installing its new retainer before fitting back the master cylinder equipment.