Hi all after a bit of help. 

I've just finished rebuilding the top end of my vw polo 1.2 2008 3 cylinder engine. New valves, guide, seal's and Skimmed, new timing kit including hydraulic tensioner. Any way just found this small pin underneath the car. Does anyone recognise it and knows where its from. Not wanting to risk starting the car and wrecking it. 

Any help would be much appreciated 

Looks like a cylinder head location dowel to ensure the head doesn't shimy sideways but probably get away with it if you have the other one in place and bolts torqued down nicely