Replace your dim, worn out under hood factory incandescent bulbs with brighter, longer lasting Putco Plasma LED bulbs. Say good - bye to straining your eyes on a dark night by the light of a dim factory bulb Plasma LED lights will brighten your engine bay, making reservoirs, dipsticks and other components more visible. And the cleaner, brighter light is much more attractive. They also burn longer and cooler youll most likely never have to replace them.