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Dorman M71259 Brake Master Cylinder
Reliable Brake Master Cylinder for Dodge W300
The Dorman M71259 brake master cylinder is designed specifically for Dodge W300 models, providing consistent hydraulic pressure for your braking system. Crafted from durable cast iron, this master cylinder includes a reservoir and features a 1.125-inch bore diameter to meet OEM specifications.
- Master cylinder bore diameter: 1.125 inches
- Constructed from cast iron for durability
- Includes reservoir for fluid storage
- Two outlets with secondary outlet thread diameter of 0.5 inches
- Rearward outlet size: 9/16-18
- Package contains the master cylinder only
Product Details and Specifications
The Dorman M71259 brake master cylinder is engineered to restore proper brake hydraulics in Dodge W300 vehicles. Its cast iron construction ensures long-lasting performance under demanding conditions. The included reservoir allows for efficient brake fluid management, while the 1.125-inch bore diameter matches the original equipment for reliable pressure delivery. Featuring two outlets, including a secondary outlet with a 0.5-inch thread diameter and a rearward outlet sized at 9/16-18, this master cylinder supports the brake system’s hydraulic flow requirements without the need for additional sensors or mounting hardware.
Compatible Applications and Common Uses
- Replacement for worn or leaking brake master cylinders on Dodge W300
- Restores proper brake pedal feel and hydraulic pressure
- Addresses brake fluid reservoir leaks or damage
- Solves issues related to inconsistent brake pressure or pedal sinking
- Suitable for vehicles requiring a 1.125-inch bore diameter master cylinder
Installation Notes and Tips
When installing the Dorman M71259 brake master cylinder, ensure the brake fluid reservoir is properly filled and free of contaminants. Bleed the brake system thoroughly to remove air and verify hydraulic pressure. This part does not include mounting hardware, so retain or source the necessary components for secure installation. Verify compatibility with your Dodge W300 before installation to ensure proper fit and function.
Quality Assurance and Warranty
Dorman manufactures the M71259 brake master cylinder to meet or exceed OEM standards for fit, form, and function. The cast iron material provides strength and resistance to wear. While specific warranty details are not provided, Dorman products typically come with a limited warranty covering defects in materials and workmanship. Consult product documentation for exact warranty terms.
| Brand | Dorman |
| Part Number | M71259 |
| Mounting Hardware Included | No |
| Master Cylinder Bore Diameter | 1.125 |
| Master Cylinder Material | Cast iron |
| Reservoir Included | Yes |
| Secondary Outlet Thread Diameter | 0.5 |
| Sensor Included | No |
| Number of Outlets | 2 |
| Package Contents | Master cylinder |
| Rearward Outlet Size | 9/16-18 |
This part fits 3 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 1977 | Dodge | W300 | N/A | 1.125" bore compatible with manual brakes. |
| 1976 | Dodge | W300 | N/A | 1.125" bore compatible with manual brakes. |
| 1975 | Dodge | W300 | N/A | 1.125" bore compatible with manual brakes. |
* 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.