OE Quality
60-Day Returns

Dorman M75817 Brake Master Cylinder
Reliable Brake Master Cylinder for Dodge Challenger, Charger, and Dart
The Dorman M75817 brake master cylinder is engineered to restore proper brake hydraulics in select Dodge vehicles. Designed specifically for the Dodge Challenger, Charger, and Dart, this master cylinder ensures consistent brake fluid pressure and reliable stopping power.
- Master cylinder bore diameter: 1.031 inches for precise hydraulic control
- Constructed from durable cast iron for long-lasting performance
- Includes reservoir for brake fluid, simplifying installation
- Two outlet ports with rearward outlet size 1/2-20 and secondary outlet thread diameter 9/16-18
- Package contains the master cylinder only; mounting hardware not included
Product Details and Specifications
The Dorman M75817 brake master cylinder is built with a cast iron body, providing strength and resistance to wear under demanding braking conditions. Its 1.031-inch bore diameter is calibrated to maintain optimal hydraulic pressure, ensuring effective brake response. The included reservoir allows for proper brake fluid storage and circulation, while the two outlets accommodate the brake lines with specific thread sizes (rearward outlet 1/2-20 and secondary outlet 9/16-18) for secure connections. This part is designed exclusively for Dodge models including the Challenger, Charger, and Dart, making it a direct replacement for the original equipment.
Common Applications and Problem Resolution
- Restores brake fluid pressure in Dodge Challenger, Charger, and Dart models
- Addresses brake pedal sinking or sponginess due to master cylinder failure
- Eliminates brake fluid leaks from a worn or damaged master cylinder
- Resolves inconsistent braking performance caused by internal seal wear
- Replaces faulty or corroded master cylinders to maintain brake system integrity
Installation Notes and Tips
Installation of the Dorman M75817 brake master cylinder requires careful attention to brake line connections and proper bleeding of the brake system to remove air. Since mounting hardware is not included, retain or source the necessary bolts and fittings from the original assembly. Ensure the reservoir is filled with the correct brake fluid type and check for leaks after installation. Professional installation is recommended for safety and optimal brake system function.
Quality Assurance and Warranty Information
Dorman manufactures the M75817 brake master cylinder to meet or exceed OEM standards for fit, form, and function. The cast iron construction and precise bore diameter contribute to reliable brake system performance. While specific warranty details should be confirmed at the point of purchase, Dorman typically offers limited warranties covering defects in materials and workmanship to provide confidence in product durability.
| Brand | Dorman |
|---|---|
| Part Number | M75817 |
| Master Cylinder Bore Diameter | 1.031 |
| Master Cylinder Material | Cast Iron |
| Mounting Hardware Included | No |
| Number of Outlets | 2 |
| Package Contents | Master Cylinder |
| Rearward Outlet Size | 1/2-20 |
| Reservoir Included | Yes |
| Secondary Outlet Thread Diameter | 9/16-18 |
| Sensor Included | No |
This part fits 8 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 1972 | Dodge | Challenger | N/A | 1.0313" Bore for vehicles with manual brakes |
| 1972 | Dodge | Charger | N/A | 1.0313" Bore for vehicles with manual brakes |
| 1972 | Dodge | Dart | N/A | Fitment: For power brake systems with a 1.0313 inch bore. |
| 1972 | Dodge | Dart | N/A | Bore: 1.0313 In.; 10 In. Brakes |
| 1971 | Dodge | Challenger | N/A | 1.0313" Bore for vehicles with manual brakes |
| 1971 | Dodge | Charger | N/A | 1.0313" Bore for vehicles with manual brakes |
| 1971 | Dodge | Dart | N/A | Fitment: For power brake systems with a 1.0313 inch bore. |
| 1971 | Dodge | Dart | N/A | Bore: 1.0313 In.; 10 In. 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.