I've got P0403 which is likely the EGR, but when I search I find three different EGR parts:
Original Engine Management ECS1 EGR Valve
EGR Exhaust Gas Recirculation Pressure Feedback Sensor For Ford Lincoln Mazda Mercury Replaces DPFE15 EPS4
New Herko EGR Valve EGRV430
Which one is it likely to...