(Back up reverse light,tail light, parking light. 1) Mini size 1:1 halogen lamp, no dark areas. Lamp Beads： 3030 21PCS. Those are NOT problems of The bulb and NOT covered by warranty. Cross Reference：T15,W16W,904 904LL 904NA 906 906LL 906NA 912 912LL 916 916LL 916NA 916NALL 917 917LL 920 920LL 921 921ST 921LL 921K 922,etc.
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