Spark Plug Adapter - 18 mm
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Innovative Of America Spark Plug Adapter - 18 mm

Part No. IPA7885 Warranty Details  
The IPA7885 thread adapter adapts any 18mm spark plug hole thread to 14mm
Now you can put a standard spark plug in the large old style hole
Compatible for use with all tools in the Engine Calibration Kit Use with top dead center indicator #7880 / #7886; Use with crank stopper #7876; Use with compression gauge extension #007881.
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