This handy little spark plug case will hold 2 spark plugs with 14mm thread diameter, 1/2" or 3/4" reach. Small enough to fit in your pocket or neatly in your tool kit.

Indexed spark plugs align the open end of the electrode toward the intake port. The hottest flame meets the new fuel charge for a performance gain, increases fuel mileage and plug life. This is a speed secret car racers have used for years. You simply...

Indexed spark plugs align the open end of the electrode toward the intake port. The hottest flame meets the new fuel charge for a performance gain, increases fuel mileage and plug life. This is a speed secret car racers have used for years. You simply...