Valeo Clutch Master Cylinder - 874326
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Product Information
Full details
The Valeo Clutch Master Cylinder 874326 is designed for automotive technicians and DIY enthusiasts seeking a reliable, high-performance hydraulic solution to restore smooth clutch pedal feel. Engineered with precision to meet strict OEM quality standards, this unit provides consistent fluid pressure and responsive engagement. While it serves as a high-quality direct replacement, users must verify specific vehicle make and model compatibility, as the part is application-specific and not a universal fit.
All features
| Model Part Number | 874326 |
|---|---|
| Brand | Valeo |
Extended Product Information
FAQs
Does this part come with mounting hardware?
The Valeo 874326 is typically provided as the master cylinder unit; always retain your original hardware or follow your vehicle's service manual for specific mounting requirements.
What does the 15.87 mm bore diameter mean?
The bore diameter refers to the size of the internal piston, which determines the volume of hydraulic fluid moved per stroke, ensuring it matches your vehicle's specific hydraulic pressure requirements.
Can I install this myself?
If you have experience with automotive hydraulic systems and the proper tools for line removal and system bleeding, it is a manageable DIY project. If you are uncomfortable working with hydraulics, professional installation is recommended.
Is this part compatible with my car?
This unit is a direct replacement for OEM parts 6R0721388 and 6R0721405. Please check your vehicle's owner manual or cross-reference your specific VIN to ensure compatibility.
What type of fluid should I use?
Always use the DOT-rated brake fluid specified in your vehicle's owner manual for the clutch hydraulic system.
Troubleshooting
Soft or spongy clutch pedal
The hydraulic system likely has trapped air. Perform a complete system bleed to remove air bubbles.
Clutch pedal does not return fully
Check for leaks at the master cylinder or slave cylinder seals and verify the pedal return spring is intact.
Difficulty shifting gears
Ensure the clutch master cylinder is producing adequate pressure; if shifting is difficult, verify proper fluid levels and system integrity.
Pros and Cons
Pros
- High-quality hydraulic construction ensures long-term durability
- Restores factory-like pedal feel and responsiveness
- Direct fit design simplifies the installation process
- Meets or exceeds strict automotive industry quality standards
Cons
- Application-specific fitment requires strict verification before purchase
- Installation requires hydraulic system bleeding skills
- Requires proper tools for secure line disconnection
Setup, Compatibility & Care
Before starting the installation, ensure your vehicle is parked on a level surface and the engine is cool. Since this is a hydraulic component, it is essential to use only the brake fluid type specified by your vehicle manufacturer. Always bench-bleed the master cylinder before installation if recommended for your specific vehicle to remove trapped air. After installing the cylinder, the entire hydraulic clutch circuit must be bled of air to ensure proper pressure. Regularly inspect the reservoir levels and check the area around the pedal assembly for any signs of dampness or fluid seepage to prevent future mechanical failure.