Today I installed new spark plugs into my E39 525iA. The following is a quick tutorial on how to do the same to your E39!
Objective: Replace the spark plugs in your vehicle, helping it run better and more effeciently.
Applicable Vehicles: 1997-2003 BMW E39 5-series with 6 cylinder engines: 523i, 525i, 528i, 530i.
Parts Required: 6 OEM, Bosch, or NGK (What I used) spark plugs.