Used CATERPILLAR 3512 Takeout Engine For Sale. All Complete And Run Tested. Twin Turbo, V12, Water Aftercooled, Mechanical Injection. Original Serial #: 96z00903, Rebuild Serial #: 5el00429, Original Arrangement #: 1w5220, Rebuild Arrangement #: Or3952. 1290hp 1750 Rpm. Pulled From A Large Off Highway Truck, Model 785a. Very Nice Unit!!