PIAA's Xtreme White Plus H-13 (also referred to as 9008)with a Kelvin rating of 4000K provides an intense white light and the superior performance of Xtra Technology. So lose those boring factory bulbs and upgrade to PIAA's Xtreme White Plus H-13 and experience the difference.• Dual-filament bulb • H13 is designed to comply with all DOT, ECE and NAFTA regulations for worldwide application and use. • Engineered for sustained performance in applications where a high level of vibration and moisture protection is required.