Review on 🚀 Enhance Your Engine's Performance with Denso 234-4122 Upstream Oxygen Sensor and 21” 4-Wire Harness Female Plug by Dorian Bharadwaj

World Best Price. I didn't want to mess around with "universal" O2 sensor types and splice wires to work with factory plugs. I'd rather pay the extra $ to have it assembled properly and quickly. Use this on a 2003 RSX, not a Type-S. After replacing the primary and secondary O2 sensors, I also checked their respective fuses and reset the OBD. CEL did not come. All is well. Mileage increased from mid-20s to mid-30s. (as it should have been). I bought a puller with an 02 sensor offset (needed for work!). It took me the whole 40 minutes to take my own sweet time. It even came with an anti-capture. All is well!