This price is for TWO nuts as shown. If you find you can not accurately adjust one of your older diesel engine valve clearances it usually means the threads on the lower adjusting nut are stripped. New ones are getting harder to find so we are offering good used as an alternative. There is no other subsitute. These are very special nuts that are designed to strip before you strip the threads on the valve!!!
For older OM 615 616 and 617 diesel engines with adjustable valves
Diesel Engine Valve Adjusting Lower Nut x 2 - Used