On top of the block, just under where the intercooler goes to the intake manifold, there are two numbers. One of them is the engine number, the other is the crankcase number.I think the engine number is the one to the right as you are looking at it from the front. That would be the passenger side on a RHD vehicle.naresborough, North Yorkshire. On top of the block, just under where the intercooler goes to the intake manifold, there are two numbers. One of them is the engine number, the other is the crankcase number. I think the engine number is the one to the right as you are looking at it from the front.