Question: are 9012 bulbs dual beam?
Answer: In most of cases, the bulbs sizes that are installed to this headlight assemblies are H1, H3, 9011 or 9012. The bulbs that perform for high and low beams refer to a dual beam type. They can be of H4, H13, 9004 and 9007 sizes. Halogen bulbs of this type have 2 filaments side by side.