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Raybestos MC390721 Brake Master Cylinder
Reliable Brake Master Cylinder for Acura and Honda Vehicles
The Raybestos Element3; New Brake Master Cylinder MC390721 is engineered to restore precise brake hydraulics for Acura CR-V and Honda RSX models. Designed with durable aluminum construction and exact fitment specifications, this master cylinder ensures consistent braking performance.
- Constructed from lightweight, corrosion-resistant aluminum
- Two mounting holes with 0.354-inch diameter for secure installation
- 0.938-inch bore size optimized for brake fluid pressure control
- Two ports with M10x1 thread size for primary and secondary brake lines
- Compatible with Acura CR-V and Honda RSX models
About the Raybestos Element3; New Product Line
The Element3; New line by Raybestos focuses on delivering reliable brake hydraulics components with precise engineering and quality materials. This brake master cylinder MC390721 is part of that line, offering a balance of durability and performance tailored for specific vehicle applications such as the Acura CR-V and Honda RSX.
Detailed Product Description
This brake master cylinder features an aluminum body that provides resistance to corrosion and heat, contributing to long service life. The 0.938-inch bore size is designed to maintain proper hydraulic pressure, ensuring effective brake response. With two mounting holes sized at 0.354 inches in diameter, installation is straightforward and secure. The master cylinder includes two ports, both threaded M10x1, to accommodate primary and secondary brake lines, maintaining proper fluid flow and system integrity.
Common Issues Addressed by This Master Cylinder
- Brake pedal sinking or sponginess due to internal leaks
- Loss of hydraulic pressure affecting braking efficiency
- Brake fluid leaks around the master cylinder area
- Inconsistent brake pedal feel or delayed brake response
- Replacement of worn or damaged original master cylinder components
Installation Notes and Tips
- Ensure compatibility with Acura CR-V and Honda RSX models before installation
- Bleed the brake system thoroughly after installation to remove air
- Use proper torque specifications for mounting bolts to avoid damage
- Inspect brake lines and fittings for wear or damage during replacement
- Follow manufacturer guidelines for brake fluid type and maintenance
Quality Assurance and Warranty
Raybestos manufactures the MC390721 brake master cylinder to meet strict quality standards, using durable aluminum material and precise machining. While specific warranty details should be confirmed at the point of purchase, Raybestos products typically come with coverage against manufacturing defects to ensure reliability and customer confidence.
| Brand | Raybestos |
|---|---|
| Part Number | MC390721 |
| Position | Element3; New, N/A |
| Bore Size | 0.938 |
| Master Cylinder Material | Aluminum |
| Mounting Hole Diameter | 0.354 |
| Mounting Hole Quantity | 2 |
| Number of Ports | 2 |
| Primary Port Thread A | M10x1 |
| Secondary Port Thread A | M10x1 |
This part fits 8 vehicles. Search below:
| Year | Make | Model | Submodel | Position | Notes |
|---|---|---|---|---|---|
| 2006 | Acura | RSX | Type-S | N/A | Element3; New |
| 2005 | Acura | RSX | Type-S | N/A | Element3; New |
| 2004 | Acura | RSX | Type-S | N/A | Element3; New |
| 2004 | Honda | CR-V | EX | N/A | Element3; New |
| 2003 | Acura | RSX | Type-S | N/A | Element3; New |
| 2003 | Honda | CR-V | EX | N/A | Element3; New |
| 2002 | Acura | RSX | Type-S | N/A | Element3; New |
| 2002 | Honda | CR-V | EX | 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.