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Dorman M39954 Brake Master Cylinder
| Brand | Dorman M39954 |
|---|---|
| Mounting Hardware Included | No |
| Master Cylinder Bore Diameter | 1 |
| Master Cylinder Material | Aluminum |
| Reservoir Included | No |
| Sensor Included | No |
| Number of Outlets | 4 |
| Package Contents | Master cylinder |
| Rearward Outlet Size | M11 x 1.5; m13 x 1.5 |
| Secondary Outlet Thread Diameter | M10 x 1.0; m10 x 1.0 |
| Fits | Buick, Cadillac, Oldsmobile, and Pontiac · 6 vehicles |
OE-style replacement. Matches the original design, function, and performance for the listed brake system application.
Aluminum construction. Uses new, high-quality materials for a durable brake hydraulic replacement.
Four outlet ports. Built with the outlet layout needed for the specified hydraulic routing.
Cross-references Cardone New 13-2562, Cardone Reman 10-2562 and Centric Parts 130.62083 for the same application. See all 13.
Brake Master Cylinder Replacement
Dorman M39954 is a brake master cylinder built to match the original design, function, and performance for specific applications. It uses new materials and an aluminum body to support a durable brake hydraulic repair.
Key Features
- 1-inch bore diameter for the specified brake system application
- Aluminum master cylinder construction
- Four outlet ports for the correct hydraulic routing
- No reservoir included
- No sensor included
Detailed Description
This Dorman brake master cylinder is engineered as a direct-style replacement for vehicles that require the listed outlet configuration and 1-inch bore size. The part number M39954 is associated with Cadillac DeVille, Buick LeSabre, Oldsmobile 88, Oldsmobile Delta 88, and Pontiac Bonneville applications, including drum brake wheel cylinder setups noted in the fitment data. If you are replacing a worn or leaking master cylinder, M39954 provides the hydraulic control point needed to restore brake system operation.
This part cross-references Raybestos Brakes MC39954 for the same application.
What It Is Used For
- Brake fluid leakage at the master cylinder
- Soft or inconsistent brake pedal feel
- Loss of hydraulic pressure in the brake system
- Replacement of a worn original master cylinder
Installation Notes and Tips
Verify bore diameter, outlet thread sizes, and reservoir requirements before installation. This master cylinder does not include mounting hardware, a reservoir, or a sensor. Match the vehicle’s brake line connections and bleed the hydraulic system thoroughly after installation.
Quality Assurance
Dorman states this master cylinder is precision-engineered to match the original part’s design and performance, and it is manufactured from new, high-quality materials for a durable replacement.
| Year | Make | Model | Notes |
|---|---|---|---|
| 1993 | Cadillac | DeVille | Compatible with 1-inch bore drum brake wheel cylinders. |
| 1992 | Buick | LeSabre | Compatible with 1-inch bore drum brake wheel cylinders. |
| 1992 | Oldsmobile | 88 | Compatible with 1-inch bore drum brake wheel cylinders. |
| 1991 | Buick | LeSabre | Compatible with 1-inch bore drum brake wheel cylinders. |
| 1991 | Oldsmobile | Delta 88 | Compatible with 1-inch bore drum brake wheel cylinders. |
| 1991 | Pontiac | Bonneville | Compatible with 1-inch bore drum brake wheel cylinders. |
| No rows match your filter. | |||