Pay in 4 interest-free payments of $31.23 Learn more
Ships within 48 hours · Estimated delivery Nov 4 - Nov 9
Adding ISF processing may increase ship time by as much as a week
Excellent for spirited driving
22433AA542
NOTE: A special tool is required to install the piston pin circlips
Rear Oxygen Sensor WRX MY08 Cam Sensor Adding ISF processing may increaseThis sensor measures the oxygen content in the exhaust system post catalyst. An oxygen sensor can establish the air fuel ratio by measuring the excess oxygen left over from the combustion process. The ECU compares the rear oxygen sensor signal to the front oxygen sensor signal to determine if the catalytic converter is operating efficiently. A faulty rear O2 sensor is likely to set a CEL but is unlikely to affect the engine operation. Manufacturer
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