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OE Quality
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Dorman M630076 Brake Master Cylinder
Dorman M630076 Brake Master Cylinder
Dorman M630076 is a brake master cylinder built for specific BMW Z3 applications, including 2000 BMW Z3 models built from 10/00 and 2001-2002 BMW Z3 models with Dynamic Stability Control. It is engineered to match the original master cylinder’s design, function, and performance using new, high-quality materials.
Key Features
- 23 mm bore diameter for the specified BMW Z3 brake system
- Aluminum master cylinder construction
- Four outlet ports for the original hydraulic layout
- Rearward outlet size: M12 x 1.0
- Secondary outlet thread diameter: M12 x 1.0 with 1.0 thread pitch
- Master cylinder only; reservoir not included
- Sensor not included
Detailed Description
This Dorman brake master cylinder is a direct-fit hydraulic replacement for select BMW Z3 vehicles. The aluminum body and 23 mm bore are specified to align with the original brake system requirements, helping restore consistent pedal response and hydraulic pressure delivery. This part cross-references Raybestos Brakes MC390479 for the same application.
Compatible With BMW Z3 brake master cylinder replacement needs, this part number M630076 is a practical choice when the original cylinder shows internal wear or leakage. It also cross-references Centric Parts 130.34116 for the same application.
Common Problems This Part Can Address
- Brake pedal sinking or gradual pedal drop
- External brake fluid leakage at the master cylinder
- Uneven or inconsistent hydraulic pressure
- Soft or spongy brake pedal feel
- Loss of braking performance caused by internal seal wear
Installation Notes and Tips
Reservoir and mounting hardware are not included, so reuse or source the required components separately. Before installation, verify the bore size, outlet thread sizes, and vehicle fitment against the original unit. After installation, bleed the brake system thoroughly and inspect all outlet connections for leaks. Fits 2000 BMW Z3, from 10/00. Fits 2001-2002 BMW Z3, w/Dynamic Stability Control.
Quality Assurance
Dorman manufactures this master cylinder as a new replacement part using high-quality materials and OE-style engineering for the listed BMW Z3 applications. Part number M630076 is built to match the original unit’s design and function for the specified fitment.
| Brand | Dorman |
| Part Number | M630076 |
| Mounting Hardware Included | No |
| Master Cylinder Bore Diameter | 23 |
| Master Cylinder Material | Aluminum |
| Reservoir Included | No |
| Sensor Included | No |
| Number of Outlets | 4 |
| Package Contents | Master cylinder |
| Rearward Outlet Size | M12 x 1.0 |
| Secondary Outlet Thread Diameter | M12 x 1.0 |
| Thread Pitch | 1.0 |
This part fits 11 vehicles. Search below:
| Year | Make | Model | Submodel | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2002 | BMW | Z3 | 3.0i | N/A | Bore: 23 mm; w/Dynamic Stability Control | ||
| 2002 | BMW | Z3 | Coupe | N/A | Bore: 23 mm; w/Dynamic Stability Control | ||
| 2002 | BMW | Z3 | 2.2i | N/A | Bore: 23 mm; w/Dynamic Stability Control | ||
| 2002 | BMW | Z3 | Roadster | N/A | Bore: 23 mm; w/Dynamic Stability Control | ||
| 2001 | BMW | Z3 | 3.0i | N/A | Bore: 23 mm; w/Dynamic Stability Control | ||
| 2001 | BMW | Z3 | Coupe | N/A | Bore: 23 mm; w/Dynamic Stability Control | ||
| 2001 | BMW | Z3 | 2.2i | N/A | Bore: 23 mm; w/Dynamic Stability Control | ||
| 2001 | BMW | Z3 | Roadster | N/A | Bore: 23 mm; w/Dynamic Stability Control | ||
| 2000 | BMW | Z3 | 2.5L | L6 | N/A | From 10/00 | |
| 2000 | BMW | Z3 | 2.8L | L6 | N/A | From 10/00 | |
| 2000 | BMW | Z3 | 2.0L | L6 | N/A | From 10/00 |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.