Bosch Platinum+4 has the most platinum in the Bosch Platinum plug series.ááPlatinum +4 unique firing technology combines the advantages of surface air gap technology and 4 yttrium enhanced ground electrodes.áThe fine wire platinum center electrode (which isáheat fused into the extended ceramic insulator) reducesáthe voltageánecessary to jump the gap as well as reduces quenching.ááTheá4 ground electrode design not only provides multiple radial spark pathsábut also the surface air gap designácreates optimal exposure of the air/fuel mixture to the enhanced ignition spark. The yttrium-enhancement of the ground electrodes even further extends plug life.áAll Bosch Platinum series spark plugs are designed to reach self cleaning temperature faster for quicker starts, smoother acceleration and increased fuel efficiency.
Features:
Revolutionary surface air gap firing technology featuring multiple spark paths that delivers the longest, most powerful spark for ultimate engine performance.
More platinum vs. Bosch Platinum plus for smoother acceleration, top fuel economy and maximum engine power.
Four yttrium enhanced ground electrodes provides optimum access to the air/fuel mixture for the most efficient combustion, plus the yttrium alloy ground electrodes reduce gap wear and oxidation for extended performance life.
Electrode gap is factory set which never requires adjustment and ensures ease of installation.
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