The BMW M62 engine found in many 5 series, 7 series, and X5's has two major weak points over time, Vanos seal and timing guides. The timing guides being the most noticeable and damaging can be very expensive to have a shop repair when trying to get back on the road. If you have some mechanic abilities and can follow instructions you could get this job done for a lot less, but you'll need the right tools for the job.?
This Schwaben kit features everything you need in one case to perform either job or both making timing service easy and accurate.