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Old 02-18-2009, 04:40 PM   #4
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Join Date: Apr 2002
Location: Santa Clara
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The 2004-2006 Facelift Coupes and Convertibles use a 7440 front turn signal bulb.

All other E46s (including M3s) will use either an 1156 or 7507 front bulb, 194 sidemarker bulb and either an 1156 or 7507 rear turn signal bulb if the car does not have LED tails. To determine whether whether the car takes an 1156 or 7507 bulb, take out the factory bulb and look at the metal pin offset at the base of the bulb. If they are offset 150 degrees- 7507, 180 degrees- 1156.
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