GP Thunder SGP58K-H10 9140 5800K 42W automotive specialty lighting

Halogen bulbs for headlamp and DRL use

GP Thunder SGP58K-H10 bulbs replace standard H10 halogen lamps in headlamps, fog lights and daytime running lights. They operate at 12 volt and draw 42 watts per bulb while producing a 5800 kelvin plasma white output. The pair is aimed at drivers who want a brighter, whiter look without converting to HID or LED systems.

Heat output and electrical load in normal driving

Each bulb runs at the standard 42 watt rating so the thermal load matches the original equipment specification for H10 sockets. The quartz glass envelope handles the operating temperature without deformation and the 12 volt supply sees no extra current draw beyond the factory rating. No switch or ballast is included, so installation does not add parasitic losses or audible noise.

Quartz glass construction and colour choice

The fused quartz glass allows the compact bulb to sustain the higher filament temperature needed for the 5800 kelvin white light. Buyers who prefer a warmer 3500 kelvin tone or cooler 7500 kelvin and 8500 kelvin shades can select those variants instead. The bulbs are sold as a matched pair and are manufactured in Korea to a performance quality grade.