2003-2004 Ford E450 Super Duty 5.4L V8. 2003-2004 Ford E450 Super Duty 6.8L V10. Sensor Type: Narrow-Band. Fit Notes: B2S1. Universal Or Specific Fit: Specific. Vehicle Engine. Coating prevents contamination and erosion of the electrode surfaces by combustion residue and particulates in the exhaust gases.