Ignition Tools & Timing Lights

Proform 66795 Spark Plug Indexing Tool - For 14mm Spark Plugs - Billet Aluminum

High compression engines run better with the spark plugs indexed. This way spark plugs can be properly set so there is no piston dome interference. Fits 14mm and 18mm Spark Plug Threads Made from High-Quality Aluminum Material Red Anodized...