OE Quality
60-Day Returns

Raybestos MC391028 Brake Master Cylinder
Overview of Raybestos MC391028 Brake Master Cylinder
The Raybestos Element3; New Brake Master Cylinder MC391028 is engineered for reliable brake hydraulics performance on Pontiac GTO models. Designed with precision, this aluminum master cylinder ensures consistent braking pressure and durability for your vehicle's braking system.
- Constructed from durable aluminum for corrosion resistance
- Two mounting holes with 0.346-inch diameter for secure installation
- 26.000 mm bore size optimized for Pontiac GTO brake systems
- Two ports with M12x1 thread size for primary and secondary brake lines
- Compatible specifically with Pontiac GTO models
Element3; New Product Line Details
The Element3; New line by Raybestos focuses on delivering high-quality brake hydraulics components that meet or exceed OEM specifications. This product line emphasizes material integrity and precise engineering, making the MC391028 master cylinder a dependable choice for maintaining the braking performance of your Pontiac GTO.
Technical Description and Specifications
The MC391028 brake master cylinder features an aluminum body that offers lightweight strength and resistance to corrosion, essential for long-term brake system reliability. It includes two mounting holes, each with a diameter of 0.346 inches, ensuring a secure fit during installation. The 26.000 mm bore size is calibrated to provide optimal hydraulic pressure for the braking system of Pontiac GTO vehicles. Both the primary and secondary ports use M12x1 threading, compatible with standard brake line fittings.
Applications and Problem Solving
- Restores proper hydraulic pressure in the brake system
- Replaces worn or leaking master cylinders causing brake fluid loss
- Addresses spongy or unresponsive brake pedal issues
- Eliminates brake fluid contamination risks due to corrosion
- Ensures consistent brake performance for Pontiac GTO models
Installation Notes and Tips
- Verify compatibility with Pontiac GTO before installation
- Ensure mounting holes align correctly with vehicle brake system
- Use proper torque specifications on mounting bolts to avoid leaks
- Bleed brake system thoroughly after installation to remove air
- Inspect brake lines for wear or damage during replacement
Quality Assurance and Warranty
Raybestos manufactures the MC391028 master cylinder to meet stringent quality standards, ensuring reliable performance and durability. The Element3; New product line is designed to comply with OEM requirements, providing confidence in fit and function. Warranty details should be confirmed with the product documentation or supplier.
| Brand | Raybestos |
|---|---|
| Part Number | MC391028 |
| Position | Element3; New, N/A |
| Bore Size | 26.000 |
| Master Cylinder Material | Aluminum |
| Mounting Hole Diameter | 0.346 |
| Mounting Hole Quantity | 2 |
| Number of Ports | 2 |
| Primary Port Thread A | M12x1 |
| Secondary Port Thread A | M12x1 |
This part fits 2 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2006 | Pontiac | GTO | N/A | Element3; New |
| 2005 | Pontiac | GTO | N/A | Element3; New |
* 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.