Home » Components » Fireye » Burner Controls » NEXUS » O2 PROBES FOR NX6100 / PPC6000 » Fireye NXO2PK4EX2 NXO2PK4 OBSOLETE Fireye NXO2PK4EX2 NXO2PK4 OBSOLETE NXO2PK4EX2 NXO2PK4 O2 probe with Class 1, Div 2, Group C & D housing. OBSOLETE consult ITS for replacement. Add to Quote CartThis is a Request for Quote Only. Manufacturer Info Fireye << return to components