Dinan Iridium Spark Plugs are an excellent upgrade for tuned, and even stock engines, where applicable.* Our spark plugs are made from Iridium - one of the strongest materials available. They last longer than other materials with higher melting points, run cooler, resist preignition, and even require less voltage to produce a strong spark.
Fits: BMW M2 (F87), BMW M4 (F82/F83), BMW M3 (F80), BMW 1M (E82), BMW 135i/335i/535i (N54), BMW 335i/335is (N55). Confirm fitment with us before ordering.
