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Dorman M631008 Brake Master Cylinder
Reliable Brake Master Cylinder for Pontiac GTO
The Dorman M631008 brake master cylinder is engineered to restore proper brake hydraulics for your Pontiac GTO. Designed with precision, this master cylinder ensures consistent brake fluid pressure and reliable stopping power.
- Compatible with Pontiac GTO models
- Includes removable reservoir and master cylinder cap
- Constructed from durable aluminum material
- Features dual bore diameters: 26mm and 36mm for optimal performance
- Equipped with a sensor and two outlets with M12 x 1.0 rearward outlet thread diameter
Product Features and Specifications
The Dorman M631008 brake master cylinder is built with an aluminum body for strength and corrosion resistance. It includes a removable reservoir and master cylinder cap, allowing for easy maintenance and fluid replacement. This part features two mounting holes for secure installation and two outlets to support your brake system's hydraulic needs. The bore diameters of 26mm and 36mm accommodate the specific hydraulic requirements of the Pontiac GTO brake system. Additionally, the unit comes with a sensor to monitor brake fluid levels and ensure system integrity.
Purpose and Common Applications
- Restores brake fluid pressure for consistent braking response
- Replaces worn or leaking master cylinders causing brake fluid loss
- Addresses spongy or unresponsive brake pedal issues
- Eliminates brake warning light triggers related to master cylinder failure
- Supports brake system upgrades requiring dual bore master cylinders
Installation Notes and Tips
Installation requires removal of the old master cylinder and proper bleeding of the brake system to remove air. Note that mounting hardware, push rod, brake booster, bleeder hoses, and mounting bracket are not included and may need to be reused or sourced separately. The removable reservoir simplifies fluid replacement during installation. Ensure the sensor connection is properly secured to maintain brake fluid monitoring functionality.
Quality Assurance and Warranty
Dorman manufactures this brake master cylinder to meet or exceed OEM specifications for the Pontiac GTO. The aluminum construction provides durability and resistance to corrosion. This product includes a master cylinder cap and sensor to maintain system reliability. While mounting hardware is not included, the part is designed for straightforward installation. Warranty details should be confirmed with the distributor or manufacturer.
| Brand | Dorman |
|---|---|
| Part Number | M631008 |
| Bleeder Hoses Included | No |
| Brake Booster Included | No |
| Master Cylinder Bore Diameter | 26 |
| Master Cylinder Bore Diameter | 36 |
| Master Cylinder Cap Included | Yes |
| Master Cylinder Material | Aluminum |
| Mounting Bracket Included | No |
| Mounting Hardware Included | No |
| Mounting Hole Quantity | 2 |
| Number of Outlets | 2 |
| Package Contents | 1 New Master Cylinder |
| Push Rod Included | No |
| Rearward Outlet Size | M12 X 1.0 |
| Reservoir Included | Yes |
| Reservoir Type | Removable |
| Secondary Outlet Thread Diameter | 12 |
| Sensor Included | Yes |
This part fits 2 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2006 | Pontiac | GTO | N/A | |
| 2005 | Pontiac | GTO | 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.