ARP 230-2801 Flywheel Bolt Kit GM 6.6L DuramaxARP 230 2801 Flywheel Bolt Kit GM 6. 6L Duramax Flywheel bolt kit for GM 6. 6L Duramax diesel applications. Flywheel bolt kit For GM 6. 6L Duramax diesel Precision machined fasteners Torque to factory specification Fits: GM: Sierra 2500, Sierra 3500, Silverado 2500, Silverado 3500 Make Model Years Engine GM Silverado 2500 2001 to 2016 GM 6. 6L Duramax GM Silverado 3500 2001 to 2016 GM 6. 6L Duramax GM Sierra 2500 2001 to 2016 GM 6. 6L Duramax GM