Engine case saver for when the cylinders are removed. Prevents connecting rod from bouncing against the engine case. Arrows point up or out, never down. Should work with most Harley Davidson Big Twin (EVO/Shovel/Pan), others may work as well.
V2 should be used when wanting to use two at one time. The original overlapped the opposite cylinder in such a way that you could not lay the other flat against the case.
The author marked this model as their own original creation.