OE Quality
60-Day Returns

Dorman M630497 Brake Master Cylinder
Reliable Brake Master Cylinder for Dodge Ram 2500 and 3500
The Dorman M630497 brake master cylinder is engineered to restore proper brake function in Dodge Ram 2500 and Ram 3500 models. Designed with precision, this master cylinder includes a reservoir and sensor to ensure accurate brake fluid management and system monitoring.
- Master cylinder bore diameter: 1.313 inches for consistent hydraulic pressure
- Constructed from durable aluminum material for corrosion resistance
- Includes reservoir and sensor for integrated brake fluid control and monitoring
- Two outlets with rearward outlet size M10 x 1.0 and secondary outlet thread diameter M12 x 1.0
- Thread pitch of 1.0 for secure and precise fitting
Product Details and Specifications
The Dorman M630497 brake master cylinder is specifically designed for Dodge Ram 2500 and Ram 3500 trucks, providing a direct replacement for the original equipment. Its aluminum construction offers durability and resistance to wear, while the 1.313-inch bore diameter ensures proper hydraulic pressure for effective braking performance. The included reservoir and sensor allow for seamless integration with the vehicle’s brake system, maintaining fluid levels and alerting to any issues. Featuring two outlets with precise thread sizes (M10 x 1.0 rearward outlet and M12 x 1.0 secondary outlet), this master cylinder supports reliable brake line connections.
Common Applications and Problem Resolution
- Restores brake pressure in Dodge Ram 2500 and 3500 models
- Replaces faulty or leaking master cylinders causing brake fluid loss
- Addresses brake pedal sinking or sponginess due to internal seal failure
- Resolves sensor-related brake warning light issues
- Improves overall brake system responsiveness and safety
Installation Notes and Tips
Installation of the Dorman M630497 brake master cylinder requires proper brake fluid handling and bleeding procedures to avoid air in the brake lines. Ensure compatibility with Dodge Ram 2500 and Ram 3500 models before installation. The master cylinder comes without mounting hardware, so retain original fasteners or acquire appropriate replacements. Verify thread sizes and outlet connections for a secure fit. Sensor connections should be carefully reattached to maintain brake system monitoring functions.
Quality Assurance and Warranty
Dorman manufactures the M630497 brake master cylinder to meet or exceed OEM standards for fit, form, and function. The aluminum construction and integrated sensor contribute to long-term reliability. While specific warranty details are not provided here, Dorman products typically include a limited warranty against defects in materials and workmanship. Consult product documentation or the manufacturer for exact warranty terms.
| Brand | Dorman |
| Part Number | M630497 |
| Mounting Hardware Included | No |
| Master Cylinder Bore Diameter | 1.313 |
| Master Cylinder Material | Aluminum |
| Reservoir Included | Yes |
| Sensor Included | Yes |
| 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 12 vehicles. Search below:
| Year | Make | Model | Fuel Type | Position | Notes |
|---|---|---|---|---|---|
| 2011 | Ram | 2500 | DIESEL | N/A | Brake Master Cylinder: Bore size of 1.3125 inches. |
| 2011 | Ram | 3500 | N/A | Brake Master Cylinder: Bore size of 1.3125 inches. | |
| 2010 | Dodge | Ram 2500 | DIESEL | N/A | Brake Master Cylinder: Bore size of 1.3125 inches. |
| 2010 | Dodge | Ram 3500 | N/A | Brake Master Cylinder: Bore size of 1.3125 inches. | |
| 2009 | Dodge | Ram 2500 | DIESEL | N/A | Brake Master Cylinder: Bore size of 1.3125 inches. |
| 2009 | Dodge | Ram 3500 | DIESEL | N/A | Brake Master Cylinder: Bore size of 1.3125 inches. |
| 2008 | Dodge | Ram 2500 | DIESEL | N/A | Brake Master Cylinder: Bore size of 1.3125 inches. |
| 2008 | Dodge | Ram 3500 | DIESEL | N/A | Brake Master Cylinder: Bore size of 1.3125 inches. |
| 2007 | Dodge | Ram 2500 | DIESEL | N/A | Brake Master Cylinder: Bore size of 1.3125 inches. |
| 2007 | Dodge | Ram 3500 | DIESEL | N/A | Brake Master Cylinder: Bore size of 1.3125 inches. |
| 2006 | Dodge | Ram 2500 | DIESEL | N/A | Brake Master Cylinder: Bore size of 1.3125 inches. |
| 2006 | Dodge | Ram 3500 | DIESEL | N/A | Brake Master Cylinder: Bore size of 1.3125 inches. |
* 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.