NGK Spark Plug - 2 Step Colder For N54/N55 – Black Forest Industries
Engine Cylinder Head Spark Plug Recess Insert OEM N55 BMW E70 E90 E92 E93 F10 | eBay
97506KT - NGK Performance Iridium Colder Spark Plug Set - BMW N54 N55 | Turner Motorsport
Changed N55 spark plugs - BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)
R44 BMW Spark Plug Gap Adjustment Tool For N55, S55, N63 & S63 Engines
Official N54/N55 spark plug fitment thread - BMW 3-Series (E90 E92) Forum
NGK Spark Plug (Set of 6) - BMW N55 / S55 | 12120039664-KT6 – UroTuning
BMW OEM Spark Plug for F87 N55 M2 (12120037582)
How To Replace Spark Plugs On A BMW N55 Engine (X5, X3, 335i, & More)
BMW M2: How To Change Spark Plugs (N55) - YouTube
BMW N55 Replacement Spark Plug Wires – Kies Motorsports