How to overhaul the brake master cylinder on Buick LeSabre?

The first step is to remove the Brake Master Cylinder from the vehicle and fasten the mount with a bench vise while making the rear primary Piston component available for access. Before disassembling the master cylinder reservoir clean its exterior surface at the cap area. Check the cap and diaphragm for damage then replace them when necessary. Press the primary Piston downward using a smooth tool and take out its Piston retainer and assembly from the cylinder bore. The cylinder inlet and outlet ports need plugging while filtered non-lubed air cleanses the front outlet port to remove both pistons and their accompanying seals plus the return spring. Take out and discard the primary Piston parts and its seals to access the secondary Piston. Treat all moving parts of the master cylinder with denatured alcohol before inspecting the parts for small fractures, exterior wear marks, or rust damage. Replace the whole master cylinder when these problems cannot be fixed. Use filtered air to dry components and apply dot-3 brake fluid product number 12377967 (Canadian 992667) or equivalent to grease the master cylinder bores secondary Piston return spring and all parts you repair. Place the sealed primary seal and retainer pieces with their secondary seal on the secondary Piston. Insert the lubricated return spring and secondary Piston component into the main bore space. Put the lubricated primary Piston assembly inside. Apply a smooth tool to push down the primary Piston and install the new Piston retainer before connecting the master cylinder reservoir with its cap and diaphragm to restore the system in the vehicle.

How to replace the brake master cylinder on Buick LeSabre?

To change the Brake Master Cylinder, take off the electrical plug of the fluid level sensor and disconnect the brake pipes from the master cylinder, plug the open pipes to avoid fluid and contamination loss. Next, remove the two attaching nuts and take off the master cylinder. Take it off the old master cylinder and dispose of it if you are going to reuse the reservoir. For installation fix reservoir to new master cylinder and bench bleed the master cylinder. Mount the master cylinder to the power booster, and make sure to follow the fastener notice for torque. Tighten the attaching nuts on 23 nm (17 ft. Lbs.) and reattach the brake pipes tightening the latter to 33 nm (24 ft. Lbs.). Mating the electric connector to the fluid level sensor, top up the master cylinder reservoir to the full marker with delco supreme ii brake fluid, gm p/n 12377967, or use the equivalent dot 3 brake fluid, is the last step before bleeding the hydraulic brake system.

OEM Buick LeSabre Brake Master Cylinder

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13 Brake Master Cylinders found

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Buick LeSabre Master Cylinder Part Number: 25509416
$91.40 MSRP: $163.22
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Product Specifications
- Other Name: Cylinder, Brake Master Cylinder; Brake Master Cylinder
- Replaced by: 19176498
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1984-1985 Buick LeSabre | Collector's Edition, Custom, Estate Wagon, Limited | 8 Cyl 5.7 L DIESEL
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Buick LeSabre Master Cylinder Part Number: 25632708
Product Specifications
- Other Name: Cylinder, Brake Master Cylinder; Master Cylinder Assembly; Brake Master Cylinder
- Replaces: 25642820
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1992-1995 Buick LeSabre | Custom, Limited | 6 Cyl 3.8 L GAS
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Buick LeSabre 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:
- 1984-1990 Buick LeSabre | Collector's Edition, Custom, Estate Wagon, Limited | 6 Cyl 3.8 L GAS, 6 Cyl 4.1 L GAS, 8 Cyl 5.0 L GAS
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Buick LeSabre Master Cylinder Repair Kit Part Number: 25509843
Product Specifications
- Other Name: 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:
- 1984-1985 Buick LeSabre | Collector's Edition, Custom, Estate Wagon, Limited | 8 Cyl 5.7 L DIESEL
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Buick LeSabre Master Cylinder Part Number: 18047787
Product Specifications
- Other Name: Cylinder, Brake Master Cylinder; Brake Master Cylinder
- Replaces: 18045192, 18040242
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2000-2003 Buick LeSabre | Custom, Limited | 6 Cyl 3.8 L GAS
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Buick LeSabre Master Cylinder Part Number: 18022002
Product Specifications
- Other Name: Cylinder Kit, Brake Master; Overhaul Kit; Master Cylinder Repair Kit
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-2005 Buick LeSabre | Custom, Limited | 6 Cyl 3.8 L GAS
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Buick LeSabre Master Cylinder Part Number: 25535706
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:
- 1988-1990 Buick LeSabre | Base, Custom, Limited | 6 Cyl 3.8 L GAS
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Buick LeSabre Master Cylinder Part Number: 25533694
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:
- 1988-1989 Buick LeSabre | Base, Custom, Limited | 6 Cyl 3.8 L GAS
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Buick LeSabre Master Cylinder Part Number: 19209255
Product Specifications
- Other Name: Cylinder, Brake Master Cylinder; Brake Master Cylinder
- Replaces: 18048572
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004-2005 Buick LeSabre | Custom, Limited | 6 Cyl 3.8 L GAS
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Buick LeSabre Master Cylinder Part Number: 19209230
Product Specifications
- Other Name: Cylinder, Brake Master Cylinder; Master Cylinder Assembly; Brake Master Cylinder
- Replaces: 18046507, 18044394, 18029946
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996 Buick LeSabre | Custom, Limited | 6 Cyl 3.8 L GAS
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Buick LeSabre Master Cylinder Part Number: 19209215
Product Specifications
- Other Name: Cylinder, Brake Master Cylinder; Brake Master Cylinder
- Replaces: 18021862, 18029759, 18029856, 18020057
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1997-1999 Buick LeSabre | Custom, Limited | 6 Cyl 3.8 L GAS
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Buick LeSabre Master Cylinder Part Number: 18060068
Product Specifications
- Other Name: Cylinder, Brake Master Cylinder; Master Cylinder Assembly; Brake Master Cylinder
- Replaces: 18012756
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1991-1992 Buick LeSabre | Base, Custom, Limited | 6 Cyl 3.8 L GAS
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Buick LeSabre Master Cylinder Part Number: 18013426
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:
- 1984-1990 Buick LeSabre | Collector's Edition, Custom, Estate Wagon, Limited | 6 Cyl 3.8 L GAS, 6 Cyl 4.1 L GAS, 8 Cyl 5.0 L GAS

Buick LeSabre Brake Master Cylinder

Want to cut long-term maintenance and repair costs? Choose OEM Brake Master Cylinder. Those parts deliver top durability you can trust. On our site, you'll find a huge catalog of genuine Buick LeSabre parts. Prices are unbeatable, so you can keep more in your pocket. Every OEM Buick LeSabre Brake Master Cylinder includes a manufacturer's warranty. You can also get an easy return policy that keeps buying risk free. Fast delivery, get your car on the road quickly. It's simple to search, compare, and order. Stop guessing about quality or fit. Order today and save with parts that last.

It is also important to note that Brake Master Cylinder specifically refers to a part of LeSabre brakes that comprises of highly reliable and performant characteristics, designed to be used in any LeSabre cars built between 1959 up to 2005. This Brake Master Cylinder effectively translates the force exerted by the foot to hydraulic pressure guaranteed to make the calipers or drum brakes to work as desired to stop the wheels. For instance, the Buick LeSabre mostly comes equipped with a dual circuit master cylinder that improves safety because the vehicle continues to have brakes even if one of the circuits is a problem. This feature goes to support the Brake Master Cylinder in increasing efficiency as well as safety when in operation. It is important to pay attention to the Buick LeSabre Brake Master Cylinder so that you may not allow leaks and corrosion that affect the brakes to develop. The above discussion provides subsequent evidence to the LeSabre's position as a popular large car by highlighting its brake system, which includes hydraulic force managing and distribution of stresses. The mentioned attributes do not only improve the aspect of the driving interest, but are also significant for the safety of the car. There is no doubt that Master Cylinder Brake for Buick LeSabre car model is highly valuable in the automotive market because it has been tested to work effectively and it is extremely durable- a perfect addition for any car owner who wishes to keep their car in great shape.

Buick LeSabre Brake Master Cylinder Parts and Q&A

Master Cylinder
18047787
Q: How to overhaul the brake master cylinder on Buick LeSabre?
A:
The first step is to remove the Brake Master Cylinder from the vehicle and fasten the mount with a bench vise while making the rear primary Piston component available for access. Before disassembling the master cylinder reservoir clean its exterior surface at the cap area. Check the cap and diaphragm for damage then replace them when necessary. Press the primary Piston downward using a smooth tool and take out its Piston retainer and assembly from the cylinder bore. The cylinder inlet and outlet ports need plugging while filtered non-lubed air cleanses the front outlet port to remove both pistons and their accompanying seals plus the return spring. Take out and discard the primary Piston parts and its seals to access the secondary Piston. Treat all moving parts of the master cylinder with denatured alcohol before inspecting the parts for small fractures, exterior wear marks, or rust damage. Replace the whole master cylinder when these problems cannot be fixed. Use filtered air to dry components and apply dot-3 brake fluid product number 12377967 (Canadian 992667) or equivalent to grease the master cylinder bores secondary Piston return spring and all parts you repair. Place the sealed primary seal and retainer pieces with their secondary seal on the secondary Piston. Insert the lubricated return spring and secondary Piston component into the main bore space. Put the lubricated primary Piston assembly inside. Apply a smooth tool to push down the primary Piston and install the new Piston retainer before connecting the master cylinder reservoir with its cap and diaphragm to restore the system in the vehicle.
Master Cylinder
18022002
Q: How to replace the brake master cylinder on Buick LeSabre?
A:
To change the Brake Master Cylinder, take off the electrical plug of the fluid level sensor and disconnect the brake pipes from the master cylinder, plug the open pipes to avoid fluid and contamination loss. Next, remove the two attaching nuts and take off the master cylinder. Take it off the old master cylinder and dispose of it if you are going to reuse the reservoir. For installation fix reservoir to new master cylinder and bench bleed the master cylinder. Mount the master cylinder to the power booster, and make sure to follow the fastener notice for torque. Tighten the attaching nuts on 23 nm (17 ft. Lbs.) and reattach the brake pipes tightening the latter to 33 nm (24 ft. Lbs.). Mating the electric connector to the fluid level sensor, top up the master cylinder reservoir to the full marker with delco supreme ii brake fluid, gm p/n 12377967, or use the equivalent dot 3 brake fluid, is the last step before bleeding the hydraulic brake system.