【Warranty】2 Years. (Improve fuel efficiency & Stable performance & Durable) 【Placement on Vehicle】▲234-9158 ( 89467-0E240) Upstream Left , Bank 2 Sensor 1+ 234-9161 (89467-0E250) Upstream Right, Bank 1 Sensor 1▲Sensor Type : Heated. ▲Wire Count ：4-Wire ▲234-9158 Wire Harness Length : 0.709 in ▲234-9161 Wire Harness Length : 13.78 IN 【Direct Fit Application】234-9158 usptream left oxygen sensor and 234-9161 upstream right oxygen sensor replacement for Lexus RX350 2016-2018, 2020-2021 3.5L V6, for Lexus RX350 2019 3.5L V6 RX350L; For vehicle built in Japan, for Lexus RX450H 2016-2017 3.5L V6 ELECTRIC/GAS, for Lexus RX450H 2018-2019 3.5L V6 ELECTRIC/GAS, For vehicle built in Japan, for Toyota Highlander 2017 2.7L L4, for Toyota Highlander 2017-2019 3.5L V6, for Toyota Sienna 2017-2019 3.5L V6 【Part number】234-9158, 2349158, 234 9158, 89467-0E240, 894670E240, 89467-48310, 8946748310, 89467 48310; 234-9161, 2349161, 89467-0E250, 894670E250, 8946704140, 8946733260, 8946748320, 8946748320 【Service Guaranteed】Must pass a rigorous professional practice loading test before sale and shipment. 100% satisfaction after sale services and technical assistance. Please rest assured to purchase.If you have any questions, contact with us, we will reply you in 24 hours and offer the solve way for you.Hope you have a good shopping! 【Direct Fit Application】234-9158 usptream left oxygen sensor and 234-9161 upstream right oxygen sensor replacement for Lexus RX350 2016-2018, 2020-2021 3.5L V6, for Lexus RX350 2019 3.5L V6 RX350L; For vehicle built in Japan, for Lexus RX450H 2016-2017 3.5L V6 ELECTRIC/GAS, for Lexus RX450H 2018-2019 3.5L V6 ELECTRIC/GAS, For vehicle built in Japan, for Toyota Highlander 2017 2.7L L4, for Toyota Highlander 2017-2019 3.5L V6, for Toyota Sienna 2017-2019 3.5L V6