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Platinum +4 spark plug information
Four ground electrodes, the most platinum and the most powerful spark. Bosch Platinum+4 has the most platinum and delivers smoother acceleration, top fuel economy and ultimate engine performance. Revolutionary Surface Air Gap Technology — four yttrium enhanced ground electrodes and a 45% longer, more powerful spark (*versus common J-gap design with 1.1 mm gap) for the most efficient combustion, plus a longer performance life. Never Requires Gapping — the electrode gap is factory-set and never requires adjustment

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