NGK 97506 1 Step Colder Spark Plugs - BMW N55 | S55 | S63When tuning your BMW N55, S55, S63TU it is recommended to go with 1 step colder spark plugs for a more efficient spark. These do not come pre gapped for tunes but we can gap them for you before shipping to suit your specific tune. Choose your option from the dropdown above prior to payment. *If you would like to gap the plugs yourself, choose ungapped in the dropdown.
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