Dorman M39869 Brake Master Cylinder
Dorman M39869 Brake Master Cylinder
Dorman M39869 is a brake master cylinder built for specific Pontiac LeMans applications that require a 7/8 in. bore. It uses an aluminum body and a 0.875 bore diameter to match the original hydraulic setup on the listed vehicles.
For Pontiac LeMans brake repair, this master cylinder provides a direct-fit replacement path for vehicles with the correct outlet and bore configuration. The Dorman M39869 is made from new, high-quality materials and is engineered to match the design, function, and performance of the original unit.
Key Features
- Brake master cylinder for brake hydraulics service
- 0.875 in. bore diameter for 7/8 in. applications
- Aluminum master cylinder construction
- Four outlet ports
- Rearward outlet sizes: M10 x 1.0; M15 x 1.0
- Secondary outlet thread diameter: M12 x 1.0; M15 x 1.0
- Reservoir not included
- Sensor not included
- Package contents: master cylinder
Detailed Description
This Dorman brake master cylinder is intended for brake system restoration on 1989-1993 Pontiac LeMans models, including 1989-1990 Pontiac LeMans vehicles with a booster stamped 2631 and drum brake wheel cylinders requiring a 7/8 in. bore size brake master cylinder. It cross-references Raybestos Brakes MC39869 for the same application. Use Dorman M39869 when the vehicle’s original master cylinder matches the listed bore, outlet, and fitment requirements.
What It Helps Address
- Brake pedal travel caused by a worn master cylinder bore
- Internal hydraulic leakage in the master cylinder
- Loss of braking performance from aging brake hydraulics
- Incorrect outlet configuration on a replacement master cylinder
- Fitment issues on Pontiac LeMans brake system repairs
Installation Notes
Verify bore diameter, outlet thread sizes, and vehicle fitment before installation. This unit does not include mounting hardware, a reservoir, or a sensor. Proper brake bleeding is required after installation, and all brake lines should be inspected for wear, corrosion, or contamination before the system is returned to service.
Quality Assurance
Dorman manufactures this master cylinder as a new replacement part using high-quality materials and OE-style engineering for the listed Pontiac LeMans applications. Part number M39869 is built to match the original design and function for the specified vehicles.
Dorman M39869 Brake Master Cylinder
Dorman M39869 Brake Master Cylinder
Dorman M39869 is a brake master cylinder built for specific Pontiac LeMans applications that require a 7/8 in. bore. It uses an aluminum body and a 0.875 bore diameter to match the original hydraulic setup on the listed vehicles.
For Pontiac LeMans brake repair, this master cylinder provides a direct-fit replacement path for vehicles with the correct outlet and bore configuration. The Dorman M39869 is made from new, high-quality materials and is engineered to match the design, function, and performance of the original unit.
Key Features
- Brake master cylinder for brake hydraulics service
- 0.875 in. bore diameter for 7/8 in. applications
- Aluminum master cylinder construction
- Four outlet ports
- Rearward outlet sizes: M10 x 1.0; M15 x 1.0
- Secondary outlet thread diameter: M12 x 1.0; M15 x 1.0
- Reservoir not included
- Sensor not included
- Package contents: master cylinder
Detailed Description
This Dorman brake master cylinder is intended for brake system restoration on 1989-1993 Pontiac LeMans models, including 1989-1990 Pontiac LeMans vehicles with a booster stamped 2631 and drum brake wheel cylinders requiring a 7/8 in. bore size brake master cylinder. It cross-references Raybestos Brakes MC39869 for the same application. Use Dorman M39869 when the vehicle’s original master cylinder matches the listed bore, outlet, and fitment requirements.
What It Helps Address
- Brake pedal travel caused by a worn master cylinder bore
- Internal hydraulic leakage in the master cylinder
- Loss of braking performance from aging brake hydraulics
- Incorrect outlet configuration on a replacement master cylinder
- Fitment issues on Pontiac LeMans brake system repairs
Installation Notes
Verify bore diameter, outlet thread sizes, and vehicle fitment before installation. This unit does not include mounting hardware, a reservoir, or a sensor. Proper brake bleeding is required after installation, and all brake lines should be inspected for wear, corrosion, or contamination before the system is returned to service.
Quality Assurance
Dorman manufactures this master cylinder as a new replacement part using high-quality materials and OE-style engineering for the listed Pontiac LeMans applications. Part number M39869 is built to match the original design and function for the specified vehicles.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Dorman M39869 Brake Master Cylinder
Dorman M39869 is a brake master cylinder built for specific Pontiac LeMans applications that require a 7/8 in. bore. It uses an aluminum body and a 0.875 bore diameter to match the original hydraulic setup on the listed vehicles.
For Pontiac LeMans brake repair, this master cylinder provides a direct-fit replacement path for vehicles with the correct outlet and bore configuration. The Dorman M39869 is made from new, high-quality materials and is engineered to match the design, function, and performance of the original unit.
Key Features
- Brake master cylinder for brake hydraulics service
- 0.875 in. bore diameter for 7/8 in. applications
- Aluminum master cylinder construction
- Four outlet ports
- Rearward outlet sizes: M10 x 1.0; M15 x 1.0
- Secondary outlet thread diameter: M12 x 1.0; M15 x 1.0
- Reservoir not included
- Sensor not included
- Package contents: master cylinder
Detailed Description
This Dorman brake master cylinder is intended for brake system restoration on 1989-1993 Pontiac LeMans models, including 1989-1990 Pontiac LeMans vehicles with a booster stamped 2631 and drum brake wheel cylinders requiring a 7/8 in. bore size brake master cylinder. It cross-references Raybestos Brakes MC39869 for the same application. Use Dorman M39869 when the vehicle’s original master cylinder matches the listed bore, outlet, and fitment requirements.
What It Helps Address
- Brake pedal travel caused by a worn master cylinder bore
- Internal hydraulic leakage in the master cylinder
- Loss of braking performance from aging brake hydraulics
- Incorrect outlet configuration on a replacement master cylinder
- Fitment issues on Pontiac LeMans brake system repairs
Installation Notes
Verify bore diameter, outlet thread sizes, and vehicle fitment before installation. This unit does not include mounting hardware, a reservoir, or a sensor. Proper brake bleeding is required after installation, and all brake lines should be inspected for wear, corrosion, or contamination before the system is returned to service.
Quality Assurance
Dorman manufactures this master cylinder as a new replacement part using high-quality materials and OE-style engineering for the listed Pontiac LeMans applications. Part number M39869 is built to match the original design and function for the specified vehicles.
