Rear End Fender Side Marker Lamp Assembly (Red) is a direct fit for the following:

1999-2010 Ford F-250 Super Duty
1999-2010 Ford F-350 Super Duty
1999-2010 Ford F-450 Super Duty
1999-2010 Ford F-550 Super Duty

Genuine Ford Part Number: 8C3Z-15442-A