Our 520 RD Series Marker Light is designed as an OEM and replacement marker for IC School Buses. Light is made with a single LED diode with a great price point for bus and truck fleets. Chromed Bezel dresses up the look of the light to complement other chrome accessories on your vehicle. Optional Fat Gasket is available for additional mounting versatility. Compliant with SAE J575, J578 J592, FMVSS 108 & CMVSS and is P2 rated. Light has a 5 Year No Hassle Warranty.