Luk LFW387 Clutch Flywheel

LuK LFW387 Flywheel for GM Trucks

The LuK LFW387 is a new clutch flywheel engineered to provide the smooth, flat friction surface needed for proper clutch engagement. For Chevrolet Silverado and GMC Sierra applications, replacing the flywheel during clutch service is a practical way to restore drivability without resurfacing an old unit.

• New flywheel, never remanufactured
• Engineered and manufactured to OE specifications
• Includes ring gear and dowel pins as part of the OE-style design
• Flywheel diameter: 12.047 in. / 30.6 mm
• Flywheel inner diameter: 20.875 in. / 8.218 mm
• 168 teeth for proper starter engagement
• Part number: LFW387

OE-Style Replacement Details

Built for clutch replacement service, the LuK LFW387 flywheel is made to deliver the flat, consistent contact surface a clutch needs to operate correctly. Its OE-spec construction supports accurate fitment and dependable starter ring gear engagement on Chevrolet Silverado 1500, Silverado 2500 HD, Silverado 3500, Silverado 3500 Classic, GMC Sierra 1500, Sierra 2500, Sierra 2500 HD, Sierra 3500, Sierra 3500 Classic, and Sierra 3500 HD applications covered by the listed fitment. This part number, LFW387, is a direct replacement choice for drivers servicing GM truck manual transmission systems.

What This Flywheel Helps Address

• Clutch chatter or uneven clutch engagement caused by a worn friction surface
• Vibration or driveline shudder during takeoff
• Starter engagement issues related to ring gear wear
• Repeat clutch service caused by an out-of-spec flywheel surface
• Need for a new flywheel instead of resurfacing an existing unit

Installation Notes

Inspect the clutch, pressure plate, release components, and crankshaft sealing area before installation. Confirm flywheel diameter, tooth count, and OE-style mounting alignment match the vehicle application before assembly. For best results, replace the flywheel during clutch service rather than reusing a heat-checked or uneven surface. Fits 2001-2007 Chevrolet Silverado 2500 HD, N/A; Fits 2007 Chevrolet Silverado 3500 Classic, N/A; Fits 2001-2007 GMC Sierra 1500, N/A; Fits 2001-2007 GMC Sierra 2500 HD, N/A; Fits 2007 GMC Sierra 3500 Classic, N/A; Fits 2001-2006 Chevrolet Silverado 1500, N/A; Fits 2001-2006 Chevrolet Silverado 3500, N/A; Fits 2001-2006 GMC Sierra 3500, N/A; Fits 2001-2004 Chevrolet Silverado 2500, N/A; Fits 2001-2004 GMC Sierra 2500, N/A.

Quality Assurance

LuK manufactures this flywheel to OE specifications, including the ring gear and dowel pins, for consistent fit and function in the listed GM truck applications. This part cross-references Sachs (e.g., NFW1050) for the same application.