H13 (a.k.a. 9008): The Bulb That Does Both Jobs at Once
Most headlight bulbs are single-purpose — one for low beam, one for high beam, wired and swapped separately. H13 does both from a single base, switching between filaments (or, on the LED version, between chip circuits) depending on which beam you’ve selected. It’s a compact, one-socket solution, which is exactly why you’ll find it all … Read more