This 4-wire narrow-band oxygen sensor fits select 1989-2005 Volkswagen applications in the upstream position 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 350-34010 Oxygen Sensor Features:

• Fits 1989-2001 Volkswagen Combi, Panel; 1992-1994 Volkswagen Corrado; 1993-1995 Volkswagen Golf, Passat; 1993-1998 Volkswagen Jetta; 1995 Volkswagen Cabrio
• Fits 1995-1996 Volkswagen Caravelle; 1996-2001 Volkswagen Derby; 1998-2003 Volkswagen Sedan; 2004-2005 Volkswagen Van
• Engine coverage includes 1.6L H4, 1.8L I4, 2.0L I4, 2.8L V6 applications
• Sensor location by application: B1S1 (bank and sensor number)
• 4-wire narrow-band oxygen sensor
• Built-in heater for fast warm-up
• M18x1.5 threaded mounting with a 22 mm hex, 625 mm (24.6 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