Peterbilt 6"X4" rectangular crystal projection headlight with 6 white LED position light. HIGH BEAM ONLY function. Reinforced aluminum reflector, rugged anti-vibration construction. Sylvania halogen bulb: DOT 9005 X/S, 12v 60w. Replaces H4651, SAE approved. Fits Peterbilt trucks with dual rectangular headlight. Due to the depth of the light housing, this light will not fit all OEM light buckets/housings. Please see additional images for different views of this light. Sold as each. NOTE: 2006 AND NEWER TRUCKS WITH NEWER ELECTRICAL SYSTEM WILL REQUIRE A RELAY RUN TO EACH HEADLAMP TO FUNCTION PROPERLY. PLEASE CONSULT A QUALIFIED ELECTRICIAN BEFORE PURCHASE.