Our 520 Series Marker Light is designed as an OEM and replacement marker for IC School Buses. Available as a Recess Mount Light which mounts into 5” square body cutouts. Unique oval design and bright LED light output make this light a desirable option in LED marker lighting for your school bus, transit bus or commercial vehicle. Lights can also be used as surface mounts with our Fat Gasket option. Compliant with SAE J592, FMVSS 108 & CMVSS.