Bosch (4316) Platinum + 2 Spark Plug, (Pack of 1) Revolutionary firing technology featuring multiple spark paths delivers a longer, more powerful spark for optimum engine performance. More platinum vs. Bosch Platinum plus for smoother acceleration, better gas mileage and optimum engine performance. Two yttirum-enhanced ground electrodes provides optimum access to the air/fuel mixture for more efficient combustionplus a longer performance life. Electrode gap is factory set which never requires adjustment and ensures ease of installation.