PHILIPS 12086 HiPerVision PS24W Fog Bulb, 1 Pack Exclusive OEM lighting technology The bulbs are extremely robust and compact which helps improve reliability and performance. Always replace in pairs to ensure a symmetric light beam from both bulbs on the road. Bulbs dim over time. HiPerVision bulbs by Philips, for over 100 years we have been continuously innovating automotive lighting When installing a new bulb, never touch the glass. Either use gloves or paper towel when handling.