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OSRAM 581 PY21W 12V 21W DIADEM Amber Bayonet Bulbs
BAU15s (Twin Blister)
OSRAM DIADEM are a advanced upgrade bulb for indicator lamps.
These bulbs feature an opal appearance thanks to an advanced
interference coating, and can last up to 2x the lifetime of standard
These bulbs are 100% road legal and are a direct replacement for your
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