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Dorman M390126 Brake Master Cylinder
Reliable Brake Master Cylinder for Ford, Lincoln, and Mercury Vehicles
The Dorman M390126 brake master cylinder is engineered to provide consistent hydraulic pressure for your vehicle's braking system. Designed specifically for select Ford, Lincoln, and Mercury models, this master cylinder ensures precise brake control and safety.
- Master cylinder bore diameter: 1.063 inches for accurate hydraulic performance
- Constructed from durable aluminum material for corrosion resistance and longevity
- Includes two outlets with rearward outlet size M10 x 1.0 and secondary outlet thread diameter M12 x 1.0
- Does not include reservoir or sensor, sold as master cylinder only
- Compatible with Ford Cougar, Lincoln Mark VIII, and Mercury Thunderbird models
Product Details and Specifications
The Dorman M390126 brake master cylinder is crafted from aluminum, providing a lightweight yet robust component that resists corrosion and wear. Its 1.063-inch bore diameter is designed to deliver consistent hydraulic pressure, essential for effective brake system operation. This master cylinder features two outlets, including a rearward outlet sized M10 x 1.0 and a secondary outlet with a thread diameter of M12 x 1.0, both with a thread pitch of 1.0, ensuring compatibility with the brake lines on your vehicle. Note that this part does not include a reservoir or sensor and is supplied as the master cylinder only.
Compatible Vehicles and Applications
This brake master cylinder is compatible with specific Ford, Lincoln, and Mercury vehicles, including the Ford Cougar, Lincoln Mark VIII, and Mercury Thunderbird. It is designed to replace the original equipment part, restoring proper brake hydraulics and pedal feel in these models. The part number M390126 should be referenced to confirm fitment and ensure correct replacement.
- Restores proper hydraulic pressure in the brake system
- Addresses issues such as spongy or unresponsive brake pedal
- Helps resolve brake fluid leaks from the master cylinder
- Improves overall brake system reliability and safety
Installation Notes and Tips
Installation of the Dorman M390126 brake master cylinder requires careful attention to brake system bleeding procedures to remove air and ensure proper hydraulic function. Since mounting hardware is not included, retain original fasteners or acquire appropriate replacements. Verify thread sizes (M10 x 1.0 and M12 x 1.0) for brake line connections before installation. It is recommended to inspect the brake fluid reservoir and sensors separately, as these components are not included with this master cylinder.
Quality Assurance and Warranty
Dorman manufactures this brake master cylinder to meet or exceed OEM specifications, using quality aluminum material for durability. While specific warranty details are not provided here, Dorman typically offers limited warranties on their brake hydraulic components. Refer to official Dorman documentation or contact the manufacturer for precise warranty information.
| Brand | Dorman |
| Part Number | M390126 |
| Mounting Hardware Included | No |
| Master Cylinder Bore Diameter | 1.063 |
| Master Cylinder Material | Aluminum |
| Reservoir Included | No |
| Sensor Included | No |
| Number of Outlets | 2 |
| Package Contents | Master cylinder |
| Rearward Outlet Size | M10 x 1.0 |
| Secondary Outlet Thread Diameter | M12 x 1.0 |
| Thread Pitch | 1.0 |
This part fits 17 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 1997 | Ford | Thunderbird | N/A | Drum brake wheel cylinder with a size of 1.0625 inches. | ||
| 1997 | Mercury | Cougar | N/A | Drum brake wheel cylinder with a size of 1.0625 inches. | ||
| 1996 | Ford | Thunderbird | N/A | Bore: 1.0625 In.; w/2 Ports | ||
| 1996 | Ford | Thunderbird | N/A | Drum brake wheel cylinder with a size of 1.0625 inches. | ||
| 1996 | Lincoln | Mark VIII | N/A | Drum brake wheel cylinder with a size of 1.0625 inches. | ||
| 1996 | Mercury | Cougar | 4.6L | V8 | N/A | Drum brake wheel cylinder with a size of 1.0625 inches. |
| 1995 | Ford | Thunderbird | N/A | Bore: 1.0625 In.; w/2 Ports | ||
| 1995 | Ford | Thunderbird | N/A | Drum brake wheel cylinder with a size of 1.0625 inches. | ||
| 1995 | Lincoln | Mark VIII | N/A | Drum brake wheel cylinder with a size of 1.0625 inches. | ||
| 1995 | Mercury | Cougar | 4.6L | V8 | N/A | Drum brake wheel cylinder with a size of 1.0625 inches. |
| 1994 | Ford | Thunderbird | N/A | Bore: 1.0625 In.; w/2 Ports | ||
| 1994 | Ford | Thunderbird | N/A | Drum brake wheel cylinder with a size of 1.0625 inches. | ||
| 1994 | Lincoln | Mark VIII | N/A | Drum brake wheel cylinder with a size of 1.0625 inches. | ||
| 1994 | Mercury | Cougar | 4.6L | V8 | N/A | Drum brake wheel cylinder with a size of 1.0625 inches. |
| 1993 | Ford | Thunderbird | N/A | |||
| 1993 | Lincoln | Mark VIII | N/A | Drum brake wheel cylinder with a size of 1.0625 inches. | ||
| 1993 | Mercury | Cougar | N/A |
* 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.