I'm looking at replacing this on my N20 engine (seems like a simplish bolt off/on procedure), and was wondering if there were any recomendations for part manufacturers that people have used, or ones to avoid. BM want £478, have seen Vaico, Topran for 90ish and a Pierburg for £310, wondering if that price difference of the Pierburg is an indication of quality

Also be interested to hear about any issues with removing/refitting that I might be missing

Cheers,
Peter