41mm size bulbs are usually found in the map, dome, and trunk lights on newer Ford, GMC, Cadillac, and Chevrolet vehicles. Diode Dynamics 41mm LED upgrade bulbs are 100% plug and play, and provide a far brighter, more modern appearance. Installation takes only a few minutes using basic hand tools!
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Built with the highest quality components, our LED replacement bulbs provide years of reliable use without flickering or failure. 41mm cross-reference: 578, 4210, 6451, DE3425, DE3423, DE3425LL, DE3423LL, 211, 212, 212-2, 214-2, 6413, 6429