Code 0153 o2 sensor, is this the left side upstream or downstream sensor?
I believe it's the driver's side back one but don't know which is upstream or downstream. Apparently I need to know for ordering the part.
upstream is before the converter ( nearest the engine ) , downstream is after and down by the transmission ( crossmember area)
04 KJ JBA 4 INCH COILOVER LIFT
03 KJ JBA 2.5 TOTAL CONTROL LIFT
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