O2 Oxygen Sensor Upstream Downstream 234-9064 234-4733 Replacement for Honda ...

Direct replacement O2 oxygen sensor engineered for Honda vehicles. This dual-purpose sensor monitors exhaust gas composition both upstream and downstream of the catalytic converter, optimizing fuel injection timing and emissions control. Compatible with part numbers 234-9064 and 234-4733, it delivers accurate readings to your engine control module for improved fuel efficiency and reduced emissions. Built to OEM specifications for reliable performance and seamless integration with your Honda's diagnostic system.