7 is the series; 45 the engine size (4.5ltr); the 'i' stands for 'injected' or 'injection' and the L (if applicable) indicates Long wheelsbase (extra 4" in rear doors). Parts are easy although some are expensive compared with domestic products. OEM is very high quality though.
Good - Fast - Cheap: Pick any two.
E23 735i; E30 318i; E32 735iL; E38 735iL; R50 Cooper; R55 Cooper Clubman.
E21 318i; E32 735iL; E34 535i; E38 730iL; E53 4.4i
Last edited by BMWFatherFigure; 11-15-2012 at 01:07 AM.