OES Evo 8/9 Clutch Master Cylinder | 2003–2006 Mitsubishi Evo 8/9 (MR491945)

Firstly, BUY OES Evo 8/9 Clutch Master Cylinder for Evo 8/9. Keep your Mitsubishi Evolution’s clutch hydraulic system working properly with the OES Evo 8/9 Clutch Master Cylinder. Designed for 2003–2006 Mitsubishi Evolution 8 and Evolution 9 applications, this replacement clutch master cylinder is an important component of the hydraulic clutch system.

The clutch master cylinder converts movement from the clutch pedal into hydraulic pressure. That pressure is then transferred through the clutch hydraulic system to operate the clutch. When the master cylinder becomes worn or develops a leak, clutch engagement can become inconsistent and difficult to control.

Replacing a worn unit with the correct application-specific component can help restore normal clutch pedal operation and consistent hydraulic pressure.

The MR491945 part number provides a useful reference when checking compatibility with your existing clutch system. Always confirm the part number and vehicle application before ordering.

OES Evo 8/9 Clutch Master Cylinder

The OES Evo 8/9 Clutch Master Cylinder is a practical replacement for owners maintaining or repairing the clutch system on an Evolution 8 or Evolution 9.

Firstly, a properly functioning master cylinder is essential for consistent clutch pedal operation. Secondly, replacing a worn hydraulic component can help address issues such as fluid leakage or inconsistent clutch engagement. Thirdly, using the correct replacement part helps maintain the intended operation of the factory clutch hydraulic system.

This makes the component suitable for Evo owners carrying out routine drivetrain maintenance, clutch repairs, or restoration work.

Common Signs of a Worn Clutch Master Cylinder

A failing clutch master cylinder can produce several noticeable symptoms. Depending on the condition of the hydraulic system, you may experience:

• Soft or spongy clutch pedal
• Difficulty selecting gears
• Inconsistent clutch engagement
• Clutch pedal that does not return normally
• Loss of hydraulic pressure
• Brake/clutch fluid leakage around the master cylinder
• Changes in clutch pedal feel

These symptoms can also be caused by other components, including the clutch slave cylinder, hydraulic line, air in the system, or the clutch assembly itself. A complete inspection is recommended before replacing parts.

Designed for Evo 8 and Evo 9

The Evolution 8 and Evolution 9 rely on a hydraulic clutch system to transfer clutch-pedal movement to the clutch assembly. The master cylinder is located at the beginning of this hydraulic circuit and plays a key role in generating the pressure needed for clutch operation.

For vehicles with upgraded clutches or modified drivetrain systems, it is especially important to confirm that all hydraulic components are compatible with the specific clutch setup.

If you are replacing a master cylinder during a larger clutch installation, inspect the slave cylinder and hydraulic line at the same time. Replacing worn supporting components can help prevent repeated repairs.

BUY OES Evo 8/9 Clutch Master Cylinder for Evo 8/9, Replace a worn clutch master cylinder and restore consistent hydraulic clutch operation.

Vehicle Fitment

• Mitsubishi Lancer Evolution VIII (Evo 8)
• Mitsubishi Lancer Evolution IX (Evo 9)
• 2003–2006 Mitsubishi Evolution 8/9 applications
• OEM reference: MR491945

Important: Fitment can vary by model year, market, and specification. Confirm MR491945 against your VIN or existing component before purchasing.

Installation and Bleeding

Installation should be performed by a qualified technician or experienced Mitsubishi specialist.

Because the clutch master cylinder is part of a hydraulic system, the system must be properly filled and bled after installation. Air trapped inside the hydraulic circuit can cause a soft pedal and poor clutch operation.

After installation, inspect all connections for leaks and confirm that the clutch pedal operates correctly. The vehicle should also be checked for smooth gear engagement before returning to normal driving.

Package Includes

• 1 × OES Evo 8/9 Clutch Master Cylinder
• Reference Part Number: MR491945

Additional hydraulic lines, fluid, fittings, or clutch components are not included unless specifically stated in the product listing.

Frequently Asked Questions

What is the purpose of a clutch master cylinder?

The clutch master cylinder converts clutch pedal movement into hydraulic pressure. This pressure operates the clutch release mechanism through the hydraulic system.

What vehicles does this master cylinder fit?

It is intended for compatible 2003–2006 Mitsubishi Evolution 8 and Evolution 9 applications. Always verify the application using the MR491945 part number and your vehicle information.

What is the part number?

The reference OEM part number is MR491945.

Can a bad clutch master cylinder make shifting difficult?

Yes. If the master cylinder cannot generate or maintain sufficient hydraulic pressure, the clutch may not disengage properly. This can make gear selection difficult.

Does this include the clutch slave cylinder?

No. This listing is for the clutch master cylinder only unless additional components are specifically stated in the package contents.

Should the clutch system be bled after installation?

Yes. The hydraulic system should be properly bled after replacing the master cylinder to remove trapped air and restore proper clutch pedal operation.

Why Buy from Evomotorparts.com?

At Evomotorparts.com, we supply quality parts for Mitsubishi Evolution maintenance, restoration, and performance builds.

• Quality Mitsubishi Evolution performance parts
• OEM and premium aftermarket components
• Performance-focused Evo 4G63 parts
• Competitive pricing
• Worldwide shipping
• Dedicated customer support for Mitsubishi Evolution enthusiasts

Whether you’re replacing a leaking hydraulic component or refreshing the clutch system during a larger drivetrain repair, choosing the correct application-specific part is important for reliable operation.

Conclusion

The OES Evo 8/9 Clutch Master Cylinder (MR491945) is a replacement component for compatible 2003–2006 Mitsubishi Evolution 8 and Evolution 9 clutch hydraulic systems. A properly functioning master cylinder helps provide consistent clutch pedal feel and reliable clutch engagement.

Before ordering, verify the MR491945 part number and your vehicle’s exact application to ensure compatibility.

BUY OES Evo 8/9 Clutch Master Cylinder for Evo 8/9, Replace a worn clutch master cylinder and restore consistent hydraulic clutch operation.