The oxygen sensor installs on select 2001-2026 Chrysler, Dodge, Ram, Jeep and other applications. 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 350-34039 Oxygen Sensor Features:

• Fits 2003-2010 Chrysler PT Cruiser; 2004-2010 Chrysler Cirrus, Sebring; 2005-2023 Chrysler 300; 2007-2009 Chrysler Aspen; 2007-2026 Chrysler Pacifica
• Fits 2008-2016 Chrysler Town & Country; 2011-2017 Chrysler 200, Jeep Compass, Patriot, Smart Fortwo; 2020-2026 Chrysler Voyager; 2022-2024 Chrysler Grand Caravan
• Also fits select Chrysler, Dodge, Ram, Jeep, Mercedes-Benz, Mitsubishi, Smart and Volkswagen applications
• Sensor locations by application: B1S1, B1S2, B2S1, B2S2 (bank and sensor number)
• Used in both upstream and downstream positions, depending on application
• 4-wire narrow-band oxygen sensor
• Built-in heater for fast warm-up
• M18x1.5 threaded mounting with a 22 mm hex, 400 mm (15.7 in.) overall length
• Female square connector at the harness end
• Platinum electrode layer with a protective coating against combustion residue