The oxygen sensor installs in the downstream position on 2016-2020 Lexus GS350, 2018-2025 Lexus IS300, IS350, RC300 and RC350 with the 3.5L V6 engine. It signals whether the exhaust is running rich or lean so the engine computer can trim fuel delivery. A built-in heater brings the element to operating temperature quickly after a cold start.

Walker Products 250-241200 Oxygen Sensor Features:

• Fits 2016-2020 Lexus GS350; 2018-2025 Lexus IS300, IS350, RC300, RC350 with the 3.5L V6 engine
• 4-wire narrow-band oxygen sensor
• Built-in heater for fast warm-up
• M18x1.5 threaded mounting with a 22 mm hex, 1075 mm (42.3 in.) overall length
• Male/female square connector at the harness end with 4 spade terminals
• Platinum electrode layer with a protective coating against combustion residue