Home › Forums › Stay Dirty Lounge › Service and Repair Questions Answered Here › O2 sensor wire. › Reply To: O2 sensor wire. August 9, 2020 at 3:33 am #962476 Juho PekkanenParticipant No, it’s a normal copper wire. But make sure to coat it with a heat-protective tube, so the exhaust manifold won’t burn it.