Compression Tester Adapter, For 12 mm Spark Plugs, Fits 2008-Newer Ford 4.6L/5.4L, and 6.8L 3-Valve Engines, Length: 7 in., 14 mm Female Thread, Sold Individually|OTC Tools 5608 Compression Tester Adapter [For 12 mm Spark Plugs].
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OTC Gasoline Engine Compression Tester Kit 5606 - Automotive Diagnostic Tools
