cciyu Qty(5) Cab roof running Marker Bases Replacement fit for Replacement fit ford E-150 E-250 F-250 F-350 F-450 Super Duty (Black) Compatibility: For 1999-2015 Ford E-150/E-250/E-350/E-450/E-550/F-150/F-250/F-350/F-450/F-550 Super Duty with factory stock cab marker Application: For Ford E-150/E-250/E-350/E-450/E-550/F-150/F-250/F-350/F-450/F-550 Super Duty with factory stock cab marker,Roof Running Light Cab Marker Base Direct replacement for OEM factory stock cab marker bases. Come with T10 plug, convenient for modifying & rewiring. Perfect fit & No leakage. Neither any cutting nor modifying is needed.