Luk LMC637 Clutch Master Cylinder

Clutch Master Cylinder for Hyundai Sonata

This LuK clutch master cylinder is a new replacement part for manual transmission service on the 2008-2010 Hyundai Sonata. Part number LMC637 is built for hydraulic clutch release systems and includes the push rod and installation instructions for a more complete repair.

Key Features

• Brand: LuK
• Part number: LMC637
• Clutch master cylinder for manual transmission components
• New part construction
• Push rod included
• Installation instructions included
• Pre-filled fluid: No
• Pre-bled system: No
• Heat shield included: No
• Supplied without clutch slave cylinder

Product Details

LuK has extensive experience in hydraulic clutch release systems, drawing on long-term development work in the transition from mechanical to hydraulic operation. This LMC637 clutch master cylinder is a direct-fit service component for the 2008, 2009, and 2010 Hyundai Sonata with manual transmission equipment. It is intended for drivers replacing a worn or leaking master cylinder and restoring consistent clutch hydraulic pressure. This part cross-references Dayco 72637 for the same application.

Common Repair Reasons

• Soft or inconsistent clutch pedal feel
• Hydraulic fluid leakage at the master cylinder
• Difficulty disengaging the clutch
• Pedal travel that no longer returns normally
• Loss of hydraulic pressure in the clutch release system

Installation Notes

Fits 2008-2010 Hyundai Sonata, N/A. Installation instructions are included. The unit is not pre-filled and is not pre-bled, so the hydraulic system must be filled and bled during installation. The clutch slave cylinder is not included, and no heat shield is supplied. Verify the vehicle’s manual transmission hydraulic setup and confirm part number LMC637 before installation.

Quality Assurance

LuK is recognized for its role in the development of hydraulic clutch release systems, and this replacement master cylinder reflects that engineering background. Part number LMC637 is a new component built for service replacement on the listed Hyundai Sonata applications.