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Dorman M390109 Brake Master Cylinder
Reliable Brake Master Cylinder for Ford and Mazda Vehicles
The Dorman M390109 brake master cylinder is designed to restore proper brake hydraulics in select Ford and Mazda models. Engineered with an aluminum body and integrated reservoir, this master cylinder ensures consistent brake fluid pressure and reliable stopping power.
- Master cylinder bore diameter: 0.938 inches for precise hydraulic control
- Constructed from durable aluminum material for corrosion resistance
- Includes reservoir for brake fluid storage
- Equipped with a sensor to monitor brake system status
- Two outlet ports with rearward outlet size M10 x 1.0 and thread pitch 1.0
- Compatible with Ford 626, Mazda MX-6, and Ford Probe models
Product Details and Specifications
The Dorman M390109 brake master cylinder features a 0.938-inch bore diameter, which is critical for maintaining proper hydraulic pressure in the brake system. Its aluminum construction offers strength and resistance to corrosion, extending the service life of the component. The included reservoir allows for efficient brake fluid storage and management, while the integrated sensor provides real-time monitoring of brake system performance. This master cylinder has two outlets, including a rearward outlet with a thread size of M10 x 1.0 and a thread pitch of 1.0, ensuring compatibility with the brake lines on compatible vehicles.
Compatible Vehicles and Applications
This brake master cylinder is specifically designed for use in Ford 626, Mazda MX-6, and Ford Probe models. It is an ideal replacement part for restoring brake hydraulics in these vehicles, ensuring safe and reliable braking performance.
- Restores proper brake fluid pressure and pedal feel
- Replaces worn or leaking master cylinders
- Addresses brake fluid leaks from the reservoir or cylinder body
- Resolves brake warning light issues related to sensor faults
- Improves overall brake system responsiveness
Installation Notes and Tips
Installation of the Dorman M390109 brake master cylinder requires careful attention to brake line connections and sensor wiring. Since mounting hardware is not included, ensure you have the necessary bolts and fittings before beginning installation. Bleed the brake system thoroughly after installation to remove air and restore proper hydraulic function. It is recommended to consult the vehicle’s service manual for torque specifications and detailed installation procedures.
Quality Assurance and Warranty
Dorman manufactures this brake master cylinder to meet or exceed OEM standards for fit, form, and function. The aluminum construction and integrated sensor contribute to reliable performance and durability. While specific warranty details are not provided here, Dorman typically offers limited warranties on their brake hydraulic components. Verify warranty coverage with the product documentation or supplier.
| Brand | Dorman |
|---|---|
| Part Number | M390109 |
| Master Cylinder Bore Diameter | 0.938 |
| Master Cylinder Material | Aluminum |
| Mounting Hardware Included | No |
| Number of Outlets | 2 |
| Package Contents | Master Cylinder |
| Rearward Outlet Size | M10 X 1.0 |
| Reservoir Included | Yes |
| Secondary Outlet Thread Diameter | 10 |
| Sensor Included | Yes |
| Thread Pitch | 1.0 |
This part fits 17 vehicles. Search below:
| Year | Make | Model | Transmission | Position | Notes |
|---|---|---|---|---|---|
| 1999 | Mazda | 626 | Automatic | N/A | Fits 15/16" bore size drum brakes on multiple vehicle models. |
| 1998 | Mazda | 626 | Automatic | N/A | Fits 15/16" bore size drum brakes on multiple vehicle models. |
| 1997 | Ford | Probe | Automatic | N/A | Fits 15/16" bore size drum brakes on multiple vehicle models. |
| 1997 | Mazda | 626 | N/A | Fits 15/16" bore size drum brakes on multiple vehicle models. | |
| 1997 | Mazda | MX-6 | N/A | Fits 15/16" bore size drum brakes on multiple vehicle models. | |
| 1996 | Ford | Probe | Automatic | N/A | Fits 15/16" bore size drum brakes on multiple vehicle models. |
| 1996 | Mazda | 626 | Automatic | N/A | Fits 15/16" bore size drum brakes on multiple vehicle models. |
| 1996 | Mazda | MX-6 | Automatic | N/A | Fits 15/16" bore size drum brakes on multiple vehicle models. |
| 1995 | Ford | Probe | Automatic | N/A | Fits 15/16" bore size drum brakes on multiple vehicle models. |
| 1995 | Mazda | 626 | Automatic | N/A | Fits 15/16" bore size drum brakes on multiple vehicle models. |
| 1995 | Mazda | MX-6 | Automatic | N/A | Fits 15/16" bore size drum brakes on multiple vehicle models. |
| 1994 | Ford | Probe | Automatic | N/A | Fits 15/16" bore size drum brakes on multiple vehicle models. |
| 1994 | Mazda | 626 | Automatic | N/A | Fits 15/16" bore size drum brakes on multiple vehicle models. |
| 1994 | Mazda | MX-6 | Automatic | N/A | Fits 15/16" bore size drum brakes on multiple vehicle models. |
| 1993 | Ford | Probe | Automatic | N/A | Fits 15/16" bore size drum brakes on multiple vehicle models. |
| 1993 | Mazda | 626 | Automatic | N/A | Fits 15/16" bore size drum brakes on multiple vehicle models. |
| 1993 | Mazda | MX-6 | Automatic | N/A | Fits 15/16" bore size drum brakes on multiple vehicle models. |
* 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.