Deatschwerks 230 Piece Sport Compact and Euro Fuel Injector O-ring Kit (2-201)Deatschwerks 230 Piece Sport Compact and Euro Fuel Injector O ring Kit Fuel injector O rings can often become worn, damaged, or simply end up missing. The only thing more frustrating than needing to replace them, is trying to find the right size, in the right material, and at a reasonable price. Dealerships rarely have them in stock. Auto parts stores have limited sizes. And one can never can be sure if they are the right material for todays blended