High & Low Pitch Dual Tone Horn is a direct fit for the following:

2008-2010 Ford F-250 Super Duty
2008-2010 Ford F-350 Super Duty
2008-2010 Ford F-450 Super Duty
2008-2010 Ford F-550 Super Duty
2005-2014 Ford E-150
2005-2014 Ford E-250
2005-2014 Ford E-350
2005-2014 Ford E-450

Genuine Ford Part Number: 8C2Z-13832-C