Diameter: Twelve millimeters Base diameter Flat Top Bulb.
Cross Reference: 8mm Base diameter T3 Neo Wedge Instrument Panel and Gauges LED T3 - 39397-SA5-003;10mm Base diameter T4.2 Neo Wedge Instrument Panel and Gauges LED T4 - 79674-S3N-941;12mm Base diameter T4.7 Neo Wedge Instrument Panel and Gauges LED T5 - 79607-SHJ-S01;