Walker Oxygen Sensor (3-Wire Heated) – 350-33097

The Walker 350-33097 is a precision-engineered narrow-band oxygen sensor designed to maintain the stoichiometric air-fuel ratio in classic fuel-injected Volkswagen engines. By constantly monitoring exhaust gas oxygen levels, this sensor allows the engine management system to adjust fuel trim for peak performance and catalytic converter longevity.

Built with a high-temperature 20-gauge wiring harness and a durable M18-1.5 threaded body, this sensor is a specific-fit replacement for Digifant and other early VW fuel injection systems. It features a dual-shielded sensor element to prevent contamination from road debris and exhaust soot, ensuring a long service life and reliable signal output.

Detailed Vehicle Compatibility

VW Golf (1.8L L4):

1988, 1989, 1990, 1991, 1992, 1993, 1994

VW Jetta (1.8L L4):

1987, 1988, 1989, 1990, 1991, 1992

VW Mexican Made Beetle (1.6L H4):

1993, 1994, 1995, 1996, 1997

Product Highlights & Features

OE-Spec Response: Calibrated to match the signal curve and heater resistance required by Volkswagen ECUs for the RV, PF, and RD engine codes.
Corrosion-Resistant Housing: Constructed from high-quality stainless steel to prevent the sensor from seizing or rusting in the exhaust stream.
Pre-Applied Anti-Seize: The threads are coated with a specialized compound at the factory to ensure a smooth installation and easier removal in the future.

Technical Specifications

Part Number: 350-33097
Connector Type: 3-Pin Rectangular (Male)
Terminal Type: Spade
Thread Size: M18 - 1.5
Overall Length: 985mm

Installation & Maintenance Tips

Avoid Sensor Poisoning: Never apply silicone-based sprays or excessive anti-seize near the sensor tip; these chemicals can coat the ceramic element and render the sensor useless.
Safe Routing: Use the 985mm harness to follow the original factory path. Secure the wire with heat-resistant ties to prevent it from resting on the exhaust manifold or downpipe.
Wrench Size: Use a standard 22mm (7/8 inch) oxygen sensor wrench for installation. Torque the sensor to approximately 40-50 Nm (30-37 ft-lb) to ensure a proper seal without damaging the threads.

Walker 350-33097 Oxygen Sensor - VW Golf Jetta 1.8L Mexican Beetle 1.6L

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Walker 350-33097 Oxygen Sensor - VW Golf Jetta 1.8L Mexican Beetle 1.6L

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