Luk LFW104 Clutch Flywheel

OE-Style Flywheel for Manual Transmission Service

The LuK LFW104 clutch flywheel is a direct replacement for manual transmission service on select Chevrolet and GMC trucks and vans. It provides the smooth, flat clutch contact surface needed for consistent engagement and is engineered to OE specifications for fit and function.

For Chevrolet C20, K20, C30, P20, P30, and GMC C2500, K3500, and related applications, replacing the flywheel during clutch work helps restore proper drivability and clutch performance.

Key Features

• Part number LFW104
• Flywheel diameter: 11.811 in. / 30 mm
• Flywheel inner diameter: 16.7 in. / 6.575 in.
• 168-tooth ring gear
• Zero cup depth / step height for OE-style clutch setup
• New flywheel construction, not remanufactured
• Manufactured to OE specifications, including ring gear and dowel pins

Detailed Description

LuK LFW104 is a clutch flywheel built for manual transmission applications where a precise clutch mating surface matters. The flywheel’s dimensions, 168 teeth, and OE-spec construction support proper starter engagement and clutch operation. When servicing a clutch on a Chevrolet C20 Suburban, Chevrolet K20, or GMC C2500, replacing the flywheel at the same time as the clutch set is a practical alternative to resurfacing an older unit.

This part cross-references Sachs NFW1036 and ACI 88104 for the same application.

What It Helps Address

• Clutch chatter caused by an uneven flywheel surface
• Poor clutch engagement from wear or heat checking
• Starter ring gear wear on high-mileage vehicles
• Vibration or drivability issues during clutch operation
• Repeat clutch service when the flywheel is no longer within spec

Installation Notes and Tips

Inspect the clutch, pressure plate, pilot components, and rear main seal before installation. Confirm the flywheel diameter, tooth count, and step height match the original part before assembly. Proper torque procedures and clean mating surfaces are important for correct clutch operation. Fits 1967-1979 Chevrolet C20 Suburban, 1967-1979 Chevrolet K20 Suburban, 1967-1974 Chevrolet C10 Suburban, 1975-1986 Chevrolet C20, 1979-1986 Chevrolet C30, 1980-1986 Chevrolet K20, 1975 Chevrolet K20, 1979-1986 Chevrolet K30, 1975-1986 Chevrolet P20, 1975-1986 Chevrolet P30, 1987-1988 Chevrolet R20, 1987-1988 Chevrolet R30, 1987-1988 Chevrolet V30, 1987 Chevrolet V20, 1980-1986 Chevrolet C20, 1975-1978 Chevrolet C10, 1975-1977 Chevrolet G20, 1975-1977 Chevrolet G30, 1980-1986 GMC C2500, 1980-1986 GMC C3500, 1979 GMC K2500, 1984-1986 GMC K2500, 1979-1986 GMC K3500, 1979-1986 GMC P2500, 1979-1986 GMC P3500, 1979-1980 GMC P1500, 1979 GMC C2500 Suburban, 1979 GMC K2500 Suburban, 1976-1977 GMC G25, 1975-1977 GMC G35, 1987-1988 GMC R2500, 1987-1988 GMC R3500, 1987-1988 GMC V3500, and 1987 GMC V2500.

Quality Assurance

LuK manufactures this flywheel to OE specifications and supplies it as a new component rather than a remanufactured part. That approach supports consistent fitment, ring gear accuracy, and dependable clutch service on the listed Chevrolet and GMC applications.