Oxygen Sensor Downstream Heated Lambda Air-Fuel Ratio Piezoelectric Sensor for Toyota Prius

Upgrade and optimize your vehicle’s exhaust management with the Toyota Prius Downstream Oxygen Sensor With Lambda Air Fuel Ratio by IWOKPHD. This heated, piezoelectric downstream O2 sensor is designed to monitor the exhaust gas’s lambda air-fuel ratio, helping your engine run efficiently, reduce emissions, and keep your check engine light off with accurate readings. Built to fit a broad range of Toyota and Lexus models, it provides a reliable replacement option when your original sensor starts to fail or misread, restoring smooth idle, improved fuel economy, and consistent performance.

Key benefits come from precise lambda sensing at the downstream position, which complements the upstream sensor by ensuring the catalytic converter operates under optimal conditions. With compatibility for multiple engines and model years, you’ll get a direct-fit experience that minimizes installation hassle while delivering dependable sensor performance. The OEM-style part number 234-4623 (also listed as 2344623, 234 4623) and a suite of alternate identifiers ensure you’ve got the right fit for your vehicle’s emission monitoring system.

All electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.

Benefits & Tips

• Enhances fuel efficiency and lowers emissions by providing accurate downstream lamdba/O2 readings, helping the engine control unit optimize the air-fuel ratio.
• Improves driveability and idle stability on Toyota Prius (1.5L, 2001–2009) and other listed models by ensuring the downstream sensor responds quickly to changes in exhaust composition.
• Use as a reliable replacement part for long-term maintenance on compatible Toyota, Lexus, Pontiac, and Scion models to maintain proper catalytic converter operation and emission performance.

Product specifications

• Brand: IWOKPHD
• Part Numbers / OEM No.: 234-4623 (also listed as 2344623, 234 4623); other identifiers include 89465-20510, 89465-30190, 89465-30360, 89465-30410, SG358, 24605, 15273
• Sensor Type: Piezoelectric
• Heating Type: Heating Type
• Measuring Range: Downstream Rear Car Probe Air Fuel Ratio Lambda O2 oxygen sensor
• Origin: Mainland China
• Applications / Fitment: For LEXUS GS460 4.6L (2008–2011); GS430 4.3L (2001–2004); GS400 4.0L (1998–2000); GS300 3.0L (1995–1997, 1993–1994); ES300 3.0L (1992–1996); Pontiac Vibe 1.8L (2003–2006); Scion xD 1.8L (2008–2014); Toyota Prius 1.5L (2001–2009); Toyota Matrix 1.8L (2003–2006); Toyota Celica GT 1.8L (2000–2005); Toyota Celica 1.8L (1996–1997); Toyota Sienna 3.0L (1998–2000); Toyota Camry 3.0L (1992–1996, 1994–1996) and related variants.
• Warranty: 2 years (Replacement Warranty)

Package includes:

• 1 pcs

Warnings / Reminders

• Compatibility: This sensor is listed for multiple Toyota, Lexus, Pontiac, and Scion models. Please confirm your vehicle’s exact model and year to ensure proper fitment.
• Shipping and handling times may vary; items ship within 2 working days after payment is confirmed.
• Import duties, taxes, and charges are the buyer’s responsibility where applicable.

All electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.

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