This 4-wire narrow-band oxygen sensor fits select 1998-2022 Cadillac, Peugeot, Porsche, Renault and other applications and 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 350-34303 Oxygen Sensor Features:

• Fits 2007-2008 Cadillac BLS, Peugeot Grand Raid; 1998-2002 Peugeot 306; 2001-2009 Peugeot 206; 2006-2010 Peugeot 307; 2010-2014 Peugeot 207; 2011-2022 Peugeot 3008
• Fits 2002-2005 Porsche 911; 2003-2006 Renault Laguna; 2004-2011 Saab 9-3; 2010-2011 Saab 9-3X
• Sensor locations by application: B1S1, B1S2 (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, 550 mm (21.7 in.) overall length
• Male/female rectangle connector at the harness end with 4 spade terminals
• Platinum electrode layer with a protective coating against combustion residue