SplitFire spark plug

SplitFire was a company that manufactuired a spark plug featuring a split ground electrode. They promoted their product based on the theory that the "V" electrode design resulted in complete combustion by allowing the ignited flame to pass through the gap in the electrode, instead of around the electrode.

SplitFire spark plugs were popular and heavily advertised in the early 1990s. The manufacturer also sponsored the SplitFire Spark Plug 500 NASCAR stock car race, the SplitFire 200, various other powersports, and the Pro Bowlers Association SplitFire Spark Plug Open.

In 1997, the United States Federal Trade Commission charged SplitFire with deceptive advertising. The manufacturer settled the charges with the FTC; as part of the settlement, SplitFire was prohibited from making what the FTC considered deceptive claims about fuel economy or emissions. After the settlement, the popularity of SplitFire's spark plug range declined; in 2002, they were still considered a leading sparkplug manufacturer by 2015, the company's products were mostly gone from shelves and the official website had been removed.

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