The Tempest AA472 oil filter torque wrench is a great addition to any toolbox. Its 1" hex allows easy installation of all oil filters. The torque wrench also comes preset to 17 foot pounds and is easily recalibrated. Note: torque wrenches are only designed to torque in CW direction. Not designed to remove (CCW).
High internal resistance in spark plugs is rapidly becoming a concern that many IA/AP's are beginning to recognize as the source of rough running engines and chronic magneto related problems. Since a growing number of maintenance facilities are incorporating a resistance check of all spark plugs, Tempest felt it would be beneficial to make it as easy and efficient as possible to conduct such a test.
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