It absolutely was the very first 4B1 engine to become produced, and it was mounted in the 2.four L design with the Outlander plus the Delica D:5. The bore is 2mm wider than 4B10 and 4B11, which makes it a prolonged-stroke engine by using a very long stroke. The 4B11 and 4B10 are dependant on this engine, with diminished bore and stroke.Was p