
This spark plug wrench has a wrench size of 16mm. It is very thin and because of this it's perfect to change the spark plugs on BMW motorcycles. Most of the other socket wrenches and spanners are too thick for this job.
Caution: On some inline engines, the spark plug wrench may be too long for spark plugs in difficult positions (e.g., partially located under the frame) if the valve cover or other components are not removed. In this case, the spark plug wrench can be shortened accordingly.
Part no. 137521:
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