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18mm Diameter

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Items 1 to 12 of 317 total

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18mm Diameter

18mm Diameter spark plugs from popular manufacturers including Bosch, NGK, Champion and Denso.

To find the right spark plug for your vehicle try our Spark Plug Finder

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  1. 10.9mm (0.42") (77)
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  13. 9.5mm (3/8") (2)
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