VANOS seals and Valve Cover gasket
I had a leak from VCG and decided to do the VANOS seals on my 323Ci with 185K miles. I really was not having issues with VANOS (no cold start idle problems) but I thought while I had everything apart I would do it. I attached a few photos and am pleased with the condition of the engine with my mileage.
I was on the fence on whether to go with Beisan seals or a VANOS rebuild/core swap -- decided on Beisan and glad I did so. Saved alot of money and the repair was quite straight forward and did not add much time in my opinion.
I have 200 + miles on the new seals and the improvement I feel is more even power in the 2000-3000 rpm range; I now seem to get through the low gears more quickly now.