N54 2-Steps Colder Spark Plugs + FREE Spark Plug Gapping Tool e39 clutch pedal bushings Upgrade your vanos line with

Upgrade your vanos line with optional thermal protection for a small additional fee

Want to transfer you main connector to a new harness

Fits M50 and S50 Engines

(HD81) 5' E34

All F83 M4 S55 3

N54 2-Steps Colder Spark Plugs + FREE Spark Plug Gapping Tool e39 clutch pedal bushings Upgrade your vanos line withFor BMW N54 Engines 2 Steps Colder Spark Plugs Genuine NGK Spark Plugs NGK 97506High performance Iridium electrodes These 2 step colder heat range spark plugs are perfect for tracked N54 car's or highly modified high horsepower n54 engines (450+whp). We recommend changing spark plugs every 10k miles, or sooner if running E85 or an ethanol blend. NOTE: Spark plugs need to be gapped properly in order to perform their function as intended. We've included