OE Quality
60-Day Returns

Dorman M630925 Brake Master Cylinder
Reliable Brake Master Cylinder for Honda Accord
The Dorman M630925 brake master cylinder is designed specifically for Honda Accord models, providing a durable and efficient solution for your vehicle's brake hydraulics. Engineered with cast iron material and equipped with a removable reservoir, this master cylinder ensures consistent brake performance and safety.
- Master cylinder bore diameter: 0.8125 inches
- Constructed from durable cast iron
- Includes a removable brake fluid reservoir
- Equipped with a sensor for brake system monitoring
- Two outlets with M12 x 1.0 thread size
- Compatible with Honda Accord brake hydraulic systems
Product Details and Specifications
The Dorman M630925 brake master cylinder features a cast iron construction that offers strength and resistance to wear, essential for maintaining brake system integrity. The 0.8125-inch bore diameter is designed to match the hydraulic requirements of Honda Accord brake systems. This unit includes a removable reservoir, allowing for easier maintenance and fluid replacement. Additionally, the integrated sensor supports brake system diagnostics and safety monitoring. Both outlets have a thread pitch of 1.0 with M12 x 1.0 sizing, ensuring proper fitment with the vehicle's brake lines.
Compatible Applications and Common Uses
- Replacement for worn or leaking brake master cylinders on Honda Accord models
- Restores proper brake fluid pressure and pedal feel
- Addresses issues with brake fluid reservoir leaks or damage
- Resolves sensor-related brake warning lights or faults
- Suitable for brake system repairs requiring a master cylinder with two outlets
Installation Notes and Tips
When installing the Dorman M630925 brake master cylinder, ensure the brake fluid reservoir is properly seated and securely connected. Bleed the brake system thoroughly to remove air and maintain optimal brake performance. Verify that the sensor is correctly connected to the vehicle’s diagnostic system. This part does not include mounting hardware, so retain original fasteners or source compatible hardware as needed.
Quality Assurance and Warranty Information
Dorman brake master cylinders are manufactured to meet or exceed OEM specifications for fit, form, and function. The M630925 part undergoes rigorous quality control to ensure durability and reliable operation in Honda Accord brake systems. Please refer to Dorman’s warranty policy for specific coverage details.
| Brand | Dorman |
| Part Number | M630925 |
| Mounting Hardware Included | No |
| Master Cylinder Bore Diameter | 0.8125 |
| Master Cylinder Material | Cast iron |
| Reservoir Included | Yes |
| Sensor Included | Yes |
| Number of Outlets | 2 |
| Package Contents | Master cylinder |
| Rearward Outlet Size | M12 x 1.0 |
| Reservoir Type | Removable |
| Secondary Outlet Thread Diameter | M12 x 1.0 |
| Thread Pitch | 1.0 |
This part fits 15 vehicles. Search below:
| Year | Make | Model | Submodel | Body Type | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|---|
| 2017 | Honda | Accord | LX | N/A | ||||
| 2017 | Honda | Accord | Sport | N/A | ||||
| 2017 | Honda | Accord | EX | N/A | ||||
| 2017 | Honda | Accord | EX-L | N/A | ||||
| 2017 | Honda | Accord | LX-S | N/A | ||||
| 2017 | Honda | Accord | Sport Special Edition | N/A | ||||
| 2017 | Honda | Accord | SE | N/A | ||||
| 2016 | Honda | Accord | Coupe | N/A | ||||
| 2016 | Honda | Accord | EX-L | Sedan | 3.5L | V6 | N/A | |
| 2016 | Honda | Accord | Touring | Sedan | 3.5L | V6 | N/A | |
| 2015 | Honda | Accord | EX-L | Sedan | 3.5L | V6 | N/A | |
| 2015 | Honda | Accord | EX-L | Coupe | 3.5L | V6 | N/A | |
| 2015 | Honda | Accord | Touring | Sedan | 3.5L | V6 | N/A | |
| 2014 | Honda | Accord | N/A | |||||
| 2013 | Honda | Accord | 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.