It absolutely was the first 4B1 engine to generally be launched, and it had been set up during the 2.4 L model on the Outlander and also the Delica D:5. The bore is 2mm broader than 4B10 and 4B11, rendering it a extensive-stroke engine that has a lengthy stroke. The 4B11 and 4B10 are based upon this engine, with diminished bore and stroke.Th