This is only being replaced because the original was seized in the Y-pipe, so its threads stripped coming out. Otherwise, I'd have reused it.

MotorCraft DY-731 HEGO
F4UF-9F472AA
Bosch 0258003533
2121133
date code 2M11 = December 2, 2011

Owner caption December 2015 · Photo 412 of 434