Spark plugs are getting good these days, really good! So good, you might only get one chance — one chance! — to sell a set in a vehicle’s lifetime.
Plugs are essential to maintain engine performance, fuel economy and emissions. What you as a counter professional needs to do is ensure the plug has the correct physical dimensions – thread size, thread length, seat configuration, electrode reach into the combustion chamber – and the correct “heat range” characteristics for the application. That’s it!
Ok, well, there’s more. Long-life plugs should generally be replaced with the same – platinum or iridium rather than conventional spark plugs. Keep in mind, regular plugs can be upgraded to long-life plugs. Let’s go over a few things to keep in mind when selling spark plugs.
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