Bmw n55 ngk 97506. They are one step colder than N55 plugs and factory S55 plugs and suggested for higher boost E85, water/meth injection, and/or upgraded turbocharger applications across all late-model turbo BMW models. us My Yahoo! BMW N55 NGK Performance Iridium Spark Plug Set NOTE: For the N54, these plugs are 2 Steps Colder, while for the N55 they are only 1 Step Colder. They are two steps colder than stock N54 plugs and suggested all tuned applications across almost all BMW turbo models. 020". NGK 97506 Plugs are Suitable for BMW N20, N54, N55, and S55 Engines These are OE replacements for the N20 and S55, While providing a colder spark range better suited to tuned N54 and N55 Models. 0L, BMW E71 X6 xDrive35i N54 3. They are 2 steps colder than stock N54 plugs and suggested for higher boost E85, water/meth injection, and/or upgraded turbocharger applications across all late model turbo BMW models. OEM NGK spark plug, same part used to service your BMW (2 step colder for N54, 1 step colder for N55) Spark plugs are an often overlooked maintenance item. 2 Steps Colder for N54 « Previous Thread Next Thread » What Gap to use? Installing NGK Spark Plugs Weds. Spark Plug Options for N55 Enginetwitter Facebook Digg Google StumbleUpon del. mdk qxdly8 gohzto0j rvqrxyc x5ib1b nj hexbmv hmw bu or3x