OE Quality
60-Day Returns

Dorman M630270 Brake Master Cylinder
Reliable Brake Master Cylinder for Toyota RAV4
The Dorman M630270 brake master cylinder is designed specifically for Toyota RAV4 models, providing precise hydraulic control for your vehicle's braking system. This master cylinder features an aluminum construction and includes a reservoir and sensor to ensure consistent performance.
- Master cylinder bore diameter: 0.875 inches for accurate hydraulic pressure
- Durable aluminum material for long-lasting use
- Includes reservoir for fluid storage
- Equipped with a sensor for monitoring brake system status
- Two outlets with rearward outlet size M10 x 1.0 and thread pitch 1.0
Product Details and Specifications
The Dorman M630270 brake master cylinder is engineered with a 0.875-inch bore diameter to deliver reliable hydraulic pressure to the brake system of Toyota RAV4 vehicles. Constructed from aluminum, this master cylinder offers corrosion resistance and durability under demanding conditions. It comes with an integrated reservoir to hold brake fluid and a sensor to provide real-time feedback on brake system performance. The unit features two outlets, including a secondary outlet with a 10 mm thread diameter and a rearward outlet sized M10 x 1.0, both with a thread pitch of 1.0, ensuring compatibility with the vehicle's brake lines.
Compatible Applications and Common Issues Addressed
- Replacement for worn or leaking brake master cylinders on Toyota RAV4
- Resolves brake fluid leaks caused by damaged reservoirs or seals
- Addresses inconsistent brake pedal feel due to internal cylinder wear
- Restores proper brake pressure for improved stopping performance
- Fixes sensor-related brake warning light issues
Installation Notes and Tips
When installing the Dorman M630270 brake master cylinder on a Toyota RAV4, ensure the brake fluid reservoir is properly filled and free of contaminants. Bleed the brake system thoroughly to remove air and verify that all connections to the two outlets are secure and leak-free. Since mounting hardware is not included, retain original fasteners or source compatible hardware for installation. Follow manufacturer torque specifications to avoid damage to the aluminum housing or threaded outlets.
Quality Assurance and Warranty Information
Dorman manufactures the M630270 brake master cylinder to meet or exceed OEM standards for fit, form, and function on Toyota RAV4 vehicles. The aluminum construction and integrated sensor contribute to reliable brake system operation. While specific warranty details are not provided, Dorman products typically come with a limited warranty against defects in materials and workmanship.
| Brand | Dorman |
|---|---|
| Part Number | M630270 |
| Mounting Hardware Included | No |
| Master Cylinder Bore Diameter | 0.875 |
| Master Cylinder Material | Aluminum |
| Reservoir Included | Yes |
| Secondary Outlet Thread Diameter | 10 |
| Sensor Included | Yes |
| Number of Outlets | 2 |
| Package Contents | Master cylinder |
| Rearward Outlet Size | M10 x 1.0 |
| Thread Pitch | 1.0 |
This part fits 4 vehicles. Search below:
| Year | Make | Model | Transmission | Position | Notes |
|---|---|---|---|---|---|
| 2000 | Toyota | RAV4 | Manual | N/A | Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder. |
| 1999 | Toyota | RAV4 | Manual | N/A | Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder. |
| 1998 | Toyota | RAV4 | Manual | N/A | Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder. |
| 1997 | Toyota | RAV4 | Manual | N/A | Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder. |
* 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.