It absolutely was the initial 4B1 engine being unveiled, and it was put in during the two.4 L product on the Outlander and the Delica D:five. The bore is 2mm wider than 4B10 and 4B11, rendering it a prolonged-stroke engine by using a lengthy stroke. The 4B11 and 4B10 are dependant on this engine, with reduced bore and stroke.. The Mitsubishi