Luk LMC104 Clutch Master Cylinder

LuK LMC104 Clutch Master Cylinder

The LuK LMC104 clutch master cylinder is a hydraulic replacement for manual transmission systems that need consistent clutch release performance. Built with an aluminum body and a 19.05 mm (0.750 in.) bore, it is a direct service part for select Audi 80, Audi 90, Audi 80 Quattro, Audi 90 Quattro, and Audi Coupe Quattro applications.

Key Features

• Aluminum construction for hydraulic clutch service
• 19.05 mm / .750 bore diameter
• Female connector gender
• Push rod included
• Installation instructions included
• New part, not remanufactured
• Without clutch slave cylinder
• No reservoir included
• No pre-filled fluid and not pre-bled

Detailed Description

LuK LMC104 is a clutch master cylinder engineered for manual transmission hydraulic release systems. LuK has extensive experience in the evolution of clutch release technology, and this replacement cylinder reflects that background with a straightforward service design for Audi 80 and Audi 90 platform vehicles. The aluminum housing helps provide a durable, lightweight replacement, while the 19.05 mm bore supports proper hydraulic actuation in the clutch system. This part cross-references Dorman - First Stop CM39833 and Dayco 72104 for the same application.

What It Helps Fix

• Soft or inconsistent clutch pedal feel
• Hydraulic fluid leakage at the master cylinder
• Difficulty disengaging the clutch
• Pedal travel problems caused by internal seal wear
• Loss of hydraulic pressure in the clutch release system

Installation Notes and Tips

• Fits 1988-1992 Audi 80, N/A
• Fits 1988-1992 Audi 80 Quattro, N/A
• Fits 1988-1991 Audi 90, N/A
• Fits 1988-1991 Audi 90 Quattro, N/A
• Fits 1990-1991 Audi Coupe Quattro, N/A
• Fits 1993-1995 Audi 90, N/A
• Fits 1993-1995 Audi 90 Quattro, N/A
• Bleed the hydraulic system after installation to remove air from the line
• Verify push rod engagement and connector fit before final assembly
• Use the included installation instructions for vehicle-specific service steps

Quality Assurance

LuK, part of Schaeffler, brings long-standing expertise in complete clutch release systems and hydraulic clutch components. The LMC104 is a new replacement part built for service use in manual transmission applications.