Luk LFW203 Clutch Flywheel

LuK LFW203 Clutch Flywheel Overview

The LuK LFW203 clutch flywheel is a new OE-spec replacement for manual transmission service on select Chevrolet and GMC trucks and SUVs. It provides the smooth, flat friction surface needed for consistent clutch engagement and is a practical alternative to resurfacing an existing flywheel.

Built as an all-new component, this flywheel is engineered to OE specifications and includes the ring gear and dowel pins as part of the original design requirements. It is a direct-fit choice for 1993-1995 Chevrolet S10 and S10 Blazer, 1994-1995 Chevrolet K1500 and K2500, and other listed applications.

Key Features

• Part number: LFW203
• Clutch flywheel for transmission service
• 11.772 in. / 29.9 mm flywheel diameter
• 13.24 in. / 5.213 in. inner diameter
• 168-tooth ring gear
• 0 cup depth / step height
• All-new construction, not remanufactured
• Manufactured to OE specifications

Detailed Description

When replacing a clutch, the flywheel surface condition matters. The LuK LFW203 is made to restore the flat, even contact surface required for proper clutch operation, helping maintain smooth engagement and consistent pedal feel. For Chevrolet C1500, C2500, K1500, K2500, P30, S10, S10 Blazer, GMC C1500, C2500, K1500, K2500, P3500, Sonoma, and GMC Jimmy applications, this flywheel is a fitment-specific replacement built around OE dimensions and hardware locations. This part cross-references Sachs NFW1031 for the same application.

Use the LuK LFW203 when servicing a worn or heat-checked flywheel on 1993-1995 Chevrolet S10 and GMC Sonoma, or on 1994-1995 Chevrolet K1500 and GMC K1500 models listed in the fitment data. The part number LFW203 is also commonly searched alongside Chevrolet S10 flywheel replacement and GMC Sonoma clutch flywheel applications.

What It Helps Address

• Uneven or scored flywheel friction surfaces
• Clutch chatter during takeoff
• Judder or vibration on clutch engagement
• Heat spots from a worn clutch assembly
• Repeat clutch service caused by an unrepaired flywheel surface

Installation Notes and Tips

Inspect the clutch, pressure plate, release components, and rear main seal before installation. Confirm the flywheel matches the 2nd design requirement and casting number 10218653 where specified in the fitment notes. Verify tooth count, diameter, and inner diameter against the original part before assembly.

For best results, install the flywheel with clean mating surfaces and follow the vehicle manufacturer’s torque and service procedures. This is especially important on Chevrolet C1500, GMC C1500, and Chevrolet S10 applications where clutch feel and alignment depend on accurate OE-style fitment.

Quality Assurance

LuK manufactures this flywheel as a new, OE-spec component rather than a remanufactured unit. The design follows original equipment requirements for the ring gear, dowel pins, and critical dimensions used in clutch service.