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Dorman M630852 Brake Master Cylinder
| Brand | Dorman M630852 |
|---|---|
| Mounting Hardware Included | No |
| Mounting Hole Quantity | 2 |
| Master Cylinder Bore Diameter | 0.875 |
| Brake Booster Included | Yes |
| Master Cylinder Cap Included | No |
| Master Cylinder Material | Aluminum |
| Push Rod Included | No |
| Reservoir Included | No |
| Bleeder Hoses Included | No |
| Sensor Included | No |
| Mounting Bracket Included | No |
| Number of Outlets | 2 |
| Package Contents | Master cylinder |
| Rearward Outlet Size | M12 x 1.0 |
| Reservoir Type | Removable |
| Secondary Outlet Thread Diameter | M12 x 1.0 |
| Thread Pitch | 1.0 |
| Fits | BMW · 19 vehicles |
OE-style replacement. Matches the original master cylinder design and function for service work.
Aluminum construction. Uses new materials for a durable brake hydraulic replacement.
Two-port design. Features M12 x 1.0 outlet threads for the listed brake system setup.
Cross-references Centric Parts 130.51062, 13-2295 and 585103Y500 for the same application. See all 5.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Brake Master Cylinder for BMW Applications
This Dorman brake master cylinder is built for specific BMW years and models, including BMW 635CSi, BMW 528e, and BMW M6 applications. It matches the original unit’s design and function while using new materials for a direct replacement in brake hydraulic service.
Key Features
- Aluminum master cylinder construction for a durable replacement.
- 0.875 bore diameter for the specified brake system application.
- Two outlet ports with M12 x 1.0 thread pitch.
- Removable reservoir design.
- Brake booster included for the listed application.
- Fits BMW 635CSi, BMW 528e, BMW M6, BMW 535i, and BMW 524td applications.
Detailed Description
Dorman M630852 is a brake master cylinder engineered to replicate the original part’s design, function, and performance on select BMW vehicles. The aluminum body and 0.875 bore diameter support brake hydraulic operation, while the two M12 x 1.0 outlets and removable reservoir configuration match the listed application requirements. Part number M630852 is a direct-fit replacement for service work on classic BMW brake systems.
What It Helps Address
- Brake pedal travel caused by a worn master cylinder.
- Loss of hydraulic pressure in the brake system.
- Fluid leakage from a failing master cylinder assembly.
- Brake response issues tied to internal seal wear.
Installation Notes and Tips
Verify outlet thread size, bore diameter, and reservoir configuration before installation. This unit does not include mounting hardware, a cap, push rod, bleeder hoses, or a reservoir. Confirm fitment for the exact BMW application and inspect the brake booster interface during service.
Quality Assurance
Dorman manufactures this replacement using new, high-quality materials and OE-style design targets for the listed applications. Part number M630852 is cross-referenced with Centric Parts 130.51062 for the same application.
| Year | Make | Model | Notes |
|---|---|---|---|
| 1989 | BMW | 635CSi | — |
| 1988 | BMW | 528e | — |
| 1988 | BMW | 635CSi | — |
| 1988 | BMW | M6 | — |
| 1987 | BMW | 528e | — |
| 1987 | BMW | 535i | — |
| 1987 | BMW | 635CSi | — |
| 1987 | BMW | M6 | — |
| 1986 | BMW | 524td | — |
| 1986 | BMW | 528e | — |
| 1986 | BMW | 535i | — |
| 1986 | BMW | 635CSi | — |
| 1985 | BMW | 524td | — |
| 1985 | BMW | 528e | — |
| 1985 | BMW | 535i | — |
| 1985 | BMW | 635CSi | — |
| 1984 | BMW | 528e | — |
| 1983 | BMW | 528e | — |
| 1982 | BMW | 528e | — |
| No rows match your filter. | |||