Oxygen Sensor Downstream Lambda O2 for Lexus IS250 IS350

Keep your Lexus IS250 or IS350 running clean, efficient, and within emissions standards with this downstream oxygen sensor (O2 sensor) from IWOKPHD. As the vital monitor after the catalytic converter, this Lambda sensor feeds precise exhaust data to the engine computer, helping your ECU fine-tune the air–fuel mix for optimal combustion and lower emissions. Replacing a tired or faulty downstream sensor restores performance, improves fuel economy, and helps prevent unnecessary catalytic damage over time.

Designed as a heating-type, piezoelectric sensor, it warms quickly for accurate readings and stable performance even in cold starts. With aftermarket compatibility that aligns with several OEM numbers, this sensor is a convenient, high-value replacement that keeps your driving smooth and compliant with EU standards.

Compatibility and part details are straightforward: this sensor fits FOR LEXUS IS250 (2006-2013) and FOR LEXUS IS350 (2011-2013). OEM numbers include 234-4518, 2344518, 234 4518, and 89465-53230, 8946553230, 89465 53230, 89465-30840, 8946530840, 89465 30840. Origin: Mainland China. Sensor Type: Piezoelectric. Type: Heating Type. This is an aftermarket replacement designed to meet or exceed the performance of the original part.

Benefits & Tips

• Restore accurate fuel-trim control and reduce unnecessary fuel consumption by replacing a worn downstream sensor.
• Benefit from faster warm-up and steadier readings due to the heating-type design, helping maintain consistent engine performance and smoother idling.
• Before ordering, verify fitment using the listed part numbers; if unsure, contact us with the Part Number or a photo of the original part to confirm compatibility.

Product specifications

• Brand: IWOKPHD
• Application: FOR LEXUS IS250 2006-2013; FOR LEXUS IS350 2011-2013
• Sensor Type: Piezoelectric
• Heating Type: Yes
• OEM Numbers: 234-4518, 2344518, 234 4518; 89465-53230, 8946553230, 89465 53230; 89465-30840, 8946530840, 89465 30840
• Origin: Mainland China
• Warranty: 2 years (Replacement Warranty)

Package includes:

• 1 pcs

Warnings/Reminders

• Please check the picture and the part number carefully to make sure that you bought the right part for your car.
• If you cannot determine which item fits your car, please send the Part Number or the Original product photos to us to confirm before ordering.
• The only way to be 100% sure that the part will fit is to check your original part. We will check for you and reply within 24 hours.

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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