Sale Cdi Electronics Spark Checker - Cdi Electronics (519-S48H) The Spark Checker - CDI Electronics (519-S48H) is a top-quality tester with an adjustable open spark and can be divided into two parts when testing. It has available external leads for certain hard-to-reach areas. Suitable for checking up to four... MSRP: $125.86 Was: Now: $109.44