Downstream Rear Air Fuel Ratio Oxygen Sensor for Lexus GS350 (2006-2015)
Upgrade your Lexus with a 100% brand-new Downstream Rear Air Fuel Ratio Oxygen Sensor designed for the GS family (2006-2015). This downstream sensor is the precise replacement you need to restore accurate readings after the catalytic converter, helping your engine ECU regulate fuel delivery more effectively. Built for reliability by IWOKPHD, it suits a range of Lexus models including GS350, GS430, GS450H, IS F, IS250, and IS350 with 3.5L, 4.3L, or 5.0L configurations. The heating-type design ensures quick response across temperature changes, so your vehicle maintains optimal idle, smoother acceleration, and cleaner exhaust performance from day one. All electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.
Main Description
This downstream air-fuel ratio oxygen sensor provides a faithful readout of the exhaust stream, enabling your vehicle’s ECU to fine-tune the air-fuel mix for maximum efficiency. By replacing a worn or faulty downstream sensor, you can help reduce unnecessary emissions, improve throttle response, and potentially improve fuel economy. The sensor is a direct, plug-and-play replacement that fits the listed Lexus models and engines, ensuring a secure, stable installation with minimal downtime.
Key details from the listing include model compatibility, factory part numbers, and installation notes to help you confirm a precise match. The sensor is manufactured as a new, ready-to-install component with strict pre-shipment testing to meet performance expectations. It is designed to align with the OEM profile, so you get reliable performance without aftermarket guesswork.
To support EU buyers, all electronic and mechanical equipment sold by InterCyprus is CE certified and carries a two year warranty. This product listing also notes shipping timelines (ships within 2 working days after payment) and clear guidance on fitment checks before purchase to reduce the chances of incompatibility. Trusted service since 2002, InterCyprus is committed to transparent listings and dependable delivery.
Compatibility and fitment are critical for O2 sensors, so please review the application details below to ensure a perfect match for your Lexus configuration.
Benefits & Tips
- Restores accurate downstream oxygen sensing to support optimal engine management, which can improve idle stability and throttle response.
- Helps the ECU regulate the air-fuel mixture more precisely, potentially lowering emissions and maintaining catalytic converter effectiveness.
- Quick, dedicated replacement for listed Lexus models, with a heating-type sensor designed for fast response in varying temperatures.
Product Specifications
- Brand: IWOKPHD
- Product Type: Downstream Rear Air Fuel Ratio Oxygen Sensor (O2 sensor)
- Sensor Type: Piezoelectric
- Heating Type: Yes
- OEM No.: 89465-30740 (also listed as 89465 30740, 8946530740, ES20059, 25024213, 2344519, 24840)
- Application (fits these Lexus models):
- GS350 — 2007-2013, 3.5L
- GS430 — 2005-2007, 4.3L
- GS450H — 2007-2011, 3.5L V6 Electric/Gas
- IS F — 2008-2014, 5.0L
- IS250 — 2006-2013, 4.3L
- IS350 — 2006-2013, 3.5L
- Origin: Mainland China
- Measuring Range: Not specified in listing
- Notes: Direct replacement, designed for stable installation
Package includes:
- 1 x Oxygen Sensor
Warnings / Reminders
- Please check the product image and fitment before ordering. If you are not sure, contact us before you order to avoid incompatibility.
- We emphasize compatibility: incorrect orders may not be refunded per the listing guidelines.
- All items ship within 2 working days after payment confirmation; ensure your shipping address is correct.
- Import duties, taxes, and charges are not included in the item price or shipping costs; these are the buyer’s responsibility.
- After installation, if the sensor or related wiring shows signs of damage, replace promptly and verify ECU expectations with a diagnostic scan.
- Warranty: 1 year (Replacement Warranty) as specified; CE certification and a two-year warranty are supported for EU customers per InterCyprus policy.
Language support: Not listed in the provided details. If available, language options will be shown in your purchase details on InterCyprus.
Trust and reliability note: At intercyprus.com since 2002 — trusted for quality and reliability.