Idler shaft 3819920 Parts Number 3819920 Parts Name Idler shaft 3819920 Brand Cummins genuine parts Cummins Models L10 CELECT, L10 GAS, L10 MECHANICAL Related Posts Aftercooler 4938507 Water Pump 3051408 Thermostat – 3076489 Sea Water Pump – 3074540 Fan Idler Assembly – 3635034