Luk LFW100 Clutch Flywheel

LuK LFW100 Flywheel for Chevrolet and GMC V8 Applications

The LuK LFW100 clutch flywheel is a direct replacement flywheel engineered to provide the smooth, flat friction surface needed for proper clutch operation. For 1978 Chevrolet C10, C20, C30, G20, G30, K10, K20, and K30, plus GMC G25, G35, and Jimmy applications, it offers a new OE-spec alternative to resurfacing.

Key Features

• Part number: LFW100
• Flywheel diameter: 13.701 in. / 34.8 mm
• Flywheel inner diameter: 12.008 in. / 30.5 mm
• 168-tooth ring gear
• Zero flywheel cup depth / step height
• New, never remanufactured construction
• Built to OE specifications, including ring gear and dowel pins

Detailed Description

The LuK LFW100 is a clutch flywheel for Chevrolet and GMC trucks and utility models from 1978, including Chevrolet C10, C20, C30, G20, G30, K10, K20, and K30, as well as GMC G25, G35, and Jimmy. It is manufactured as a new component rather than a resurfaced or remanufactured unit, and its OE-spec dimensions help maintain the flat, consistent contact surface required for clutch engagement. This part number, LFW100, is a practical choice when replacing the clutch system on these applications.

This part cross-references ACI 88100 and AMS Automotive 6567 for the same application.

Common Problems This Flywheel Can Address

• Uneven or worn clutch contact surface
• Chatter or shudder during clutch engagement
• Heat checking or scoring on the flywheel face
• Incorrect clutch operation caused by an out-of-spec flywheel
• Need to replace a flywheel instead of resurfacing an existing unit

Installation Notes and Tips

Before installation, verify the flywheel diameter, inner diameter, and 168-tooth count match the vehicle’s original specification. Inspect the clutch assembly, crankshaft flange, and related components for wear or damage before reassembly. For best results, install the flywheel with the clutch components specified for the vehicle and confirm proper alignment during assembly.

Quality Assurance

LuK manufactures this flywheel to OE specifications, with attention to the ring gear and dowel pin details used in original-equipment style fitment. The LFW100 is supplied as a new flywheel for consistent service replacement on Chevrolet and GMC applications.