OE Quality
60-Day Returns

Raybestos MC391534 Brake Master Cylinder
Reliable Brake Master Cylinder for Chevrolet and GMC Trucks
The Raybestos Element3; New Brake Master Cylinder MC391534 is engineered to restore precise brake hydraulics for heavy-duty Chevrolet and GMC trucks. Designed specifically for models like the Sierra 2500 HD, Sierra 3500 HD, Silverado 2500 HD, Silverado 3500 HD, and Suburban 3500 HD, this master cylinder ensures consistent braking performance.
- Constructed from durable aluminum for long-lasting strength
- Features a 1.500-inch bore size for optimal hydraulic pressure
- Includes two mounting holes with a 0.420-inch diameter for secure installation
- Compatible with heavy-duty Chevrolet and GMC truck models
- Part number MC391534 for precise identification and fitment
About the Raybestos Element3; New Product Line
The Element3; New line by Raybestos focuses on delivering reliable brake hydraulics components that meet or exceed OEM specifications. This product line emphasizes quality materials and precise engineering, making it suitable for demanding applications in heavy-duty trucks. The MC391534 master cylinder is part of this line, offering a balance of durability and performance tailored for Chevrolet and GMC heavy-duty models.
Technical Details and Product Features
This brake master cylinder is crafted from aluminum, providing a lightweight yet robust construction that resists corrosion and wear. The 1.500-inch bore size is designed to generate the necessary hydraulic pressure for effective braking in large trucks. With two mounting holes measuring 0.420 inches in diameter, the installation is secure and aligns with factory specifications. These attributes ensure the MC391534 master cylinder integrates seamlessly with the brake hydraulics system of compatible Chevrolet and GMC trucks.
Common Applications and Problem Resolution
- Restores brake pressure loss in Chevrolet Sierra 2500 HD and 3500 HD models
- Addresses brake pedal sinking or sponginess in Silverado 2500 HD and 3500 HD
- Replaces worn or leaking master cylinders in Suburban 3500 HD vehicles
- Improves overall brake system responsiveness and safety
- Eliminates hydraulic fluid leaks affecting brake performance
Installation Notes and Tips
Ensure the brake system is properly bled after installation to remove air and maintain hydraulic integrity. Verify that the mounting holes align correctly with the vehicle’s brake booster or firewall. Use appropriate torque specifications for mounting bolts to avoid damage. It is recommended to inspect related brake components during installation for comprehensive system maintenance.
Quality Assurance and Warranty
Raybestos manufactures the MC391534 master cylinder to meet stringent quality standards, ensuring reliable operation under heavy-duty conditions. The Element3; New product line is designed with durability in mind, backed by Raybestos’ commitment to quality. Please refer to Raybestos’ official warranty documentation for specific coverage details.
| Brand | Raybestos |
|---|---|
| Part Number | MC391534 |
| Position | Element3; New, N/A |
| Bore Size | 1.500 |
| Master Cylinder Material | Aluminum |
| Mounting Hole Diameter | 0.420 |
| Mounting Hole Quantity | 2 |
This part fits 24 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2019 | Chevrolet | Silverado 2500 HD | N/A | Element3; New |
| 2019 | Chevrolet | Silverado 3500 HD | N/A | Element3; New |
| 2019 | Chevrolet | Suburban 3500 HD | N/A | Element3; New |
| 2019 | GMC | Sierra 2500 HD | N/A | Element3; New |
| 2019 | GMC | Sierra 3500 HD | N/A | Element3; New |
| 2018 | Chevrolet | Silverado 2500 HD | N/A | Element3; New |
| 2018 | Chevrolet | Silverado 3500 HD | N/A | Element3; New |
| 2018 | Chevrolet | Suburban 3500 HD | N/A | Element3; New |
| 2018 | GMC | Sierra 2500 HD | N/A | Element3; New |
| 2018 | GMC | Sierra 3500 HD | N/A | Element3; New |
| 2017 | Chevrolet | Silverado 2500 HD | N/A | Element3; New |
| 2017 | Chevrolet | Silverado 3500 HD | N/A | Element3; New |
| 2017 | Chevrolet | Suburban 3500 HD | N/A | Element3; New |
| 2017 | GMC | Sierra 2500 HD | N/A | Element3; New |
| 2017 | GMC | Sierra 3500 HD | N/A | Element3; New |
| 2016 | Chevrolet | Silverado 2500 HD | N/A | Element3; New |
| 2016 | Chevrolet | Silverado 3500 HD | N/A | Element3; New |
| 2016 | Chevrolet | Suburban 3500 HD | N/A | Element3; New |
| 2016 | GMC | Sierra 2500 HD | N/A | Element3; New |
| 2016 | GMC | Sierra 3500 HD | N/A | Element3; New |
| 2015 | Chevrolet | Silverado 2500 HD | N/A | Element3; New |
| 2015 | Chevrolet | Silverado 3500 HD | N/A | Element3; New |
| 2015 | GMC | Sierra 2500 HD | N/A | Element3; New |
| 2015 | GMC | Sierra 3500 HD | 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.