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I did some parts # comparison on RealOEM. A 1M "short engine" has a different PN than a 35i/35is short engine (does not include the injector cover with or without "M" & obviously nor the ECU). However searching through most of the important major components (cyl head, valves, block, crank, cams, con rods, intake manifold, oil pump, water pump, fuel inj, & exh/turbos) all are exactly indentical PN for the 1M short block -vs- the 35i/35is.
OK I did find one difference the High pressure fuel rail. I would venture to guess the only difference may be related to either "blueprinting" or optomizing tolerances in the 1M version.
Looks like you don't get much for an sideways "stick on" emblem. IMO they did that so tastelessly I wouldn't even want one.
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HerrK - 2021 X5 40i M Sport l PCD l Atlantis Blue/Ext'd Tartufo Merino l M Sport w/blue Calipers l Matt Popular l HK Sound l 740's l Exec & Drive Pro Pack
Sold w/Great Memories - E89 Z4 l ED 2010 l 2011 35i l Crimson/Ext'd Coral Red w/Alum l 6 sp MT l Prem Sound l Sport Pack l 296's |