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| It is possible, with care, to decode the construction of Denso sparkplugs. This can help in identifying suitable replacement parts from Denso or even equivalent from other manufacturers. We would not recommend using this as your sole method of identifying replacement parts unless you are confident in using the decode. |
| Below is Denso's spark plug part number decode. This applies to standard copper, platinum and Iridium power plugs. If you find it difficult to read, click on the code to open in a larger window. You may need to click again to zoom in depending on your web browser. |
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