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Old 02-04-2013, 06:41 AM
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bluebee bluebee is offline
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Join Date: Mar 2008
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Mein Auto: 02 BMW 525i M54 auto 130K
Based on careful reading of the Turner Motorsports advertisements above, it seems they're implying that only the "early M50 & M52" engines 'may' have had plastic impellers - after which BMW quickly switched to composite impellers (note: the aftermarket has always had the metal impellers).

Assuming this statement by Turner Motorsports is true, then the only remaining question to answer the OP's question is the following:
QUESTION: What E39 models used the "early M50 and M52" engines? (i.e., these would have had plastic impellers originally, but which would have quickly switched to original composite impellers.)
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Last edited by bluebee; 02-04-2013 at 06:48 AM.
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