CDI 511-9766T Spark Tester Sealed Threaded
CDI 511-9766T Spark Tester Sealed Threaded, CDI-511-9766T Spark Tester W/Threaded TipsSealed design reduces possibility of fire, an be used to test 1-8 Cyl., Pins designed for threaded spark plug Adjust from 1/8 in, 1/4 in, 3/8 in and 1/2 in. Requires you to use your existing Spark Plug wiresFeatures: Spark Tester; Threaded Tips; Replaces: 511-9766T;