Downstream Oxygen Sensor For 2010 Toyota 4Runner 2.7L L4 Plug And Play Direct Fit Replacement, OEM Quality O2 Sensor For Accurate Emissions Readings, Easy Install, Durable And Reliable, Boost Fuel Efficiency And Smooth Performance

Plug-and-Play downstream O2 sensor for 2010 Toyota 4Runner (single unit)
✔️ OEM-grade, direct-fit O2 sensor with ceramic core and 310S shell

This downstream oxygen sensor monitors exhaust oxygen levels after the catalytic converter, delivering precise signals to the ECU to optimize air-fuel ratio and emissions readings. It is designed for 2010 Toyota 4Runner L4-2.7L RWD, with a high heat-resistant ceramic element and a corrosion-resistant 310S stainless steel housing to extend service life.

✅ Cross references: 234-4169, ES20194, 13441, 2131443, 24560, 25024169, OS961, 35034277, SG823
✅ Core sensing element: high heat-resistant ceramic component
✅ Outer shell: 310S stainless steel for heat and sulfide corrosion resistance
✅ Direct-fit, plug-and-play replacement for 2010 Toyota 4Runner L4-2.7L RWD
✅ 3-year quality guarantee on oxygen sensors from this shop

💡 What is a downstream oxygen sensor used for in vehicles?

It monitors exhaust after-treatment to help the ECU manage emissions and fuel mix.
- It helps monitor catalyst efficiency after the converter
- It assists ECU in maintaining proper air-fuel ratio
- It supports emissions diagnostics and fault-code avoidance
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