Flywheel – 3012603 Parts Number 3012603 Parts Name Flywheel Brand Cummins Genuine Parts Cummins Models Cummins/DCEC Cummins K50 serial Related Posts Alternator – 3016627 Valve Spring – 3633840/3643725 Valve Insert – 3086192/3086193 Exhaust Valve Kit – 3803528 O-Ring Seal 3818885