Quick view Add to Cart CDI 519-S48 Spark Tester - 8 Cyl. $287.99 $204.49 CDI 519-S48 Spark Tester - 8 Cyl. Spark Tester with external leads for those hard to reach locations. Capable of checking 1-8 cylinders. Tester can divide in two section for testing. Replaces: 519-S48 S48 Add to Cart