921 bulbs are most often used as backup bulbs, but can also be used in tail and side marker lamps on some cars. They are the same base as a 194 bulb, but the bulb segment is larger and has higher wattage. The 2008-2014 WRX sedan and 2011-2014 STI sedan use these for backup bulbs.
The bulb length (above the base) on these is about 1 3/8". Make sure there is enough room in your bulb housing.
This bulb design packs a lot of LED in a small space. It should be used for short periods of time, and not be left constantly on. (It will overheat and start to flicker.)
One-year replacement warranty. Set of two super-white bulbs.
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Returns will be accepted for up to 10 days of Customer’s receipt or tracking number on unworn items. You, as a Customer, are obliged to inform us via email before you return the item.
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