What model year? Pre face lift or facelift? I don't know what you have (there's no signature or model/model year info) so can't look up the diagram/part nbr.

What is the color of the turn indicator lens? If it's clear...you'll need an amber bulb. If the lens is amber...you'll need a clear bulb. If it's both amber & clear...look up what bulb you require in the online part databases.

When I enter my VIN at bmwfans.info (or realoem.com) and pull up the diagram for the front turn indicator bulb (#18 in the diagram & part nbr index)...it indicates I require an S8 WEDGE 3157K bulb (in the supplemental column). If it said S8 WEDGE 3157AK then that would be an amber colored bulb. When I google the S8 WEDGE 3157K bulb...this is what I get:


The diagram and part nbr index based on my VIN gives me #18 for the front indicator for my 2006 X5 4.4:

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