Product Description CDI Johnson / Evinrude Sensor Gap ToolProduct Description: Sensor Gap Tool; Compatible for Testing Timerbase Air Gap on Johnson / Evinrude Engines with Terminal Block Power Packs; CDI 553-9702 Sensor Gap Gauge at Wholesale Marine Browse all Wholesale Marine deals $14.79 In Stock at Wholesale Marine Price verified 1d ago Buy Now at Wholesale Marine Secure checkout Easy returns or compare prices Amazon eBay Product Details Brand Cdi Electronics Cdi Electronics