OE Quality
60-Day Returns

Dorman M630418 Brake Master Cylinder
Reliable Brake Master Cylinder for Nissan Maxima
The Dorman M630418 brake master cylinder is engineered to restore proper brake hydraulics in your Nissan Maxima. Designed with precision, this master cylinder includes a reservoir and sensor to ensure optimal brake system performance.
- Master cylinder bore diameter: 0.938 inches for accurate hydraulic pressure
- Constructed from durable aluminum material for corrosion resistance
- Includes reservoir and sensor for integrated brake fluid management
- Two outlets with M12 x 1.0 thread size for secure brake line connections
- Compatible specifically with Nissan Maxima models requiring part number M630418
Product Details and Specifications
This Dorman brake master cylinder features a 0.938-inch bore diameter, providing the correct hydraulic pressure needed for effective braking. The aluminum construction offers strength and resistance to corrosion, extending the life of the component. The included reservoir allows for proper brake fluid storage, while the integrated sensor monitors fluid levels to alert drivers of potential issues. With two outlets threaded M12 x 1.0, this master cylinder ensures a secure fit with the brake lines on your Nissan Maxima. The part number M630418 identifies this specific unit designed to meet OEM specifications.
Applications and Common Issues Addressed
- Restores brake pressure loss due to worn or damaged master cylinder
- Resolves brake fluid leaks from the master cylinder reservoir or seals
- Fixes brake warning light activation caused by faulty fluid level sensor
- Eliminates spongy or unresponsive brake pedal feel
- Replaces corroded or deteriorated aluminum master cylinder components
Installation Notes and Tips
Installation of the Dorman M630418 brake master cylinder requires proper brake fluid handling and bleeding procedures to avoid air in the brake lines. Ensure compatibility with your Nissan Maxima by verifying the part number before installation. Since mounting hardware is not included, retain original hardware or source appropriate fasteners. Follow manufacturer torque specifications for outlet fittings to prevent leaks.
Quality Assurance and Warranty
Dorman brake master cylinders are manufactured to meet or exceed OEM standards for fit, form, and function. The M630418 part undergoes rigorous quality control to ensure reliable performance in Nissan Maxima brake systems. Please consult Dorman’s warranty policy for coverage details on this brake master cylinder.
| Brand | Dorman |
| Part Number | M630418 |
| Mounting Hardware Included | No |
| Master Cylinder Bore Diameter | 0.938 |
| Master Cylinder Material | Aluminum |
| Reservoir Included | Yes |
| Sensor Included | Yes |
| Number of Outlets | 2 |
| Package Contents | Master cylinder |
| Rearward Outlet Size | M12 x 1.0 |
| Secondary Outlet Thread Diameter | M12 x 1.0 |
| Thread Pitch | 1.0 |
This part fits 5 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2007 | Nissan | Maxima | N/A | Bore: 15/16 In.; w/Vehicle Dynamic Control |
| 2006 | Nissan | Maxima | N/A | Bore size: 15/16 In.; without Adaptive Cruise Control and Traction Control |
| 2005 | Nissan | Maxima | N/A | Bore size: 15/16 In.; without Adaptive Cruise Control and Traction Control |
| 2004 | Nissan | Maxima | N/A | Bore size: 15/16 In.; without Adaptive Cruise Control and Traction Control |
| 2003 | Nissan | Maxima | N/A | Bore size: 15/16 In.; without Adaptive Cruise Control and Traction Control |
* 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.