Bosch Auto Parts

Bosch Auto Parts


The most platinum for the longest life

Key Features
Platinum center electrode tip with four yttrium-enhanced ground electrodes


Platinum+4 Spark Plugs’ design combines surface air gap technology, four yttrium-enhanced ground electrode tips and a platinum center electrode tip creating a powerful spark.
Technical Details

PDFPlugDemands.pdf (558K)

Racing Demands of Spark Plugs

PDFSparkPlugFaces.pdf (665K)

Spark Plug Faces

PDFTighteningTorque.pdf (993K)

Diagram of Proper Torquing

PDFSparkPlugGapping.pdf (511K)

Spark Plug Gap Illustrations

PDFSP_NumberSyst_CHART_12.pdf (527K)

Spark Plugs Designation Codes

PDFPlugHeatRange.pdf (772K)

Spark Plug Temperature Curves/Heat Range


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Platinum+4 Spark Plugs


Platinum+4 Spark Plugs


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