The oxygen sensor installs on 1995-2001 Porsche 911, 1996-1998 Saab 900, 1999 Saab 9-3, 1999-2000 Saab 9-5, 1994-1997 Volvo 850, 1998 Volvo C70, S70 and V70. 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 350-34389 Oxygen Sensor Features:

• Fits 1995-2001 Porsche 911; 1996-1998 Saab 900; 1999 Saab 9-3; 1999-2000 Saab 9-5; 1994-1997 Volvo 850; 1998 Volvo C70, S70, V70
• 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, 740 mm (29.1 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