A V-type engine having a crankcase with a face, and cylinders arranged so as to form a V space therebetween. Pistons slidably mounted in the cylinders rotatably drive a crankshaft. The crankshaft is rotatably mounted in the crankcase at the junction of the V and has one end extending through the crankcase face. A timing gear engaged by the crankshaft rotatably drives a camshaft rotatably mounted in the crankcase. The camshaft extends through the crankcase face and has a sprocket mounted thereon which engages a drive belt. The drive belt rotatably drives a coolant pump interposed between the crankcase face and flywheel. The coolant pump has a pump cavity which is formed as an integral part of the crankcase face, and an impeller shaft with a rotational axis arranged substantially parallel to the crankshaft outside of the V space. A flywheel is mounted on the crankshaft end extending through the crankcase face and substantially covers the face and coolant pump.