Repco High Energy Ignition Spark Tester - RST410

Repco High Energy Ignition Spark Tester

Ignition performance lives or dies by spark plug gap. The Repco High Energy Ignition Spark Tester gives you a fast, accurate way to set electrode gaps on today’s high-energy ignition systems, so your vehicle fires up cleanly, idles smoothly and pulls harder under load. Get the gap right and you’ll cut misfires, reduce fouling and help your ignition components last longer.

Compact enough for your pocket yet tough for workshop use, this spark plug gap gauge includes two dedicated electrode adjusting tools. That means you can open or close the gap precisely without mangling fine electrodes—quick, confident adjustments every time. In minutes you can dial in plugs on cars, trucks, lawnmowers, motorcycles, chainsaws, generators and more, making it a go-to for tune-ups, small-engine servicing or prepping fresh plugs before installation.

Designed by Repco’s specialty tooling team for real-world reliability, it’s a simple tool that saves time and guesswork. Keep one in your toolbox or glovebox and set every plug right the first time.