HomeEmission Control > SensorsWalker 350-34144 Oxygen Sensor
Part #: 350-34144

Walker 350-34144 Oxygen Sensor

Walker Products Aftermarket, Upstream Front
⚙️ 55 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Walker Products Aftermarket, Upstream Front
🚗Fitment: Volkswagen and Audi, Passat, A6 Quattro, S6, RS4, S4, A4, A4 Quattro, A6, and Allroad Quattro
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Overview of Walker Oxygen Sensor 350-34144

The Walker 350-34144 oxygen sensor is designed specifically for select Audi and Volkswagen models, including the A4, A6, Passat, and their Quattro variants. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data to the vehicle's engine management system.

  • Heated oxygen sensor with 4-wire configuration
  • Specific fit for Audi and Volkswagen models such as A4, A6, Passat, RS4, S4, and S6
  • Threaded mounting type with 18.0 mm thread diameter
  • Radiused polygon male connector for secure electrical connection
  • Wiring harness length of 21.97 inches and overall length of 25.51 inches
  • Wire gauge measurement of 22 for reliable signal transmission

Detailed Product Features and Specifications

This Walker Products Aftermarket oxygen sensor (part number 350-34144) is engineered with a heated sensor element to provide faster response times and improved accuracy in emissions monitoring. The 4-wire design includes two wires for the heating element and two for the sensor signal, ensuring stable operation under various engine conditions. The sensor’s threaded mounting type with an 18.0 mm diameter allows for straightforward installation in the exhaust system of compatible Audi and Volkswagen vehicles.

The connector features a radiused polygon shape with a male gender, designed to fit securely with the vehicle’s wiring harness. The wiring harness length of approximately 22 inches and overall sensor length of 25.51 inches provide adequate reach and flexibility for installation in the specified models. The 22-gauge wire ensures durability and consistent electrical performance.

Walker Products Aftermarket Line Information

The Walker Products Aftermarket line focuses on providing reliable emission control components that meet or exceed OEM specifications. This oxygen sensor is part of that line, offering a direct replacement solution tailored to specific vehicle applications. By maintaining strict quality standards, Walker Products Aftermarket supports proper engine function and emissions compliance for Audi and Volkswagen vehicles.

Common Applications and Problem Resolution

  • Restores accurate oxygen sensing for improved fuel efficiency
  • Resolves check engine light issues related to oxygen sensor faults
  • Helps correct rough idling or engine hesitation caused by faulty sensors
  • Supports emissions system compliance for passing vehicle inspections
  • Prevents increased exhaust emissions due to sensor malfunction

Installation Notes and Tips

When installing the Walker 350-34144 oxygen sensor, ensure the vehicle is cooled down to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the exhaust threads. Verify the connector matches the radiused polygon male design for a secure fit. It is recommended to apply anti-seize compound on the threads to facilitate future removal. Confirm compatibility with your specific Audi or Volkswagen model before installation.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors undergo rigorous testing to meet industry standards for durability and performance. The 350-34144 part number is manufactured to provide consistent sensor output and reliable operation over time. Warranty coverage details should be confirmed with the product documentation or supplier, ensuring peace of mind with your purchase.

BrandWalker
Part Number350-34144
PositionWalker Products Aftermarket, Upstream Front
Connector GenderMale
Connector ShapeRadiused Polygon
Mounting TypeThreaded
Overall Length25.51
Sensor TypeHeated
Thread Diameter18.0
Universal Or Specific FitSpecific
Wire Gauge Measurement22
Wire Quantity4
Wiring Harness Length21.97

This part fits 55 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2005VolkswagenPassat2.8LV6GASUpstream RearUpstream oxygen sensor for rear exhaust system.; Walker Products Aftermarket
2005VolkswagenPassat2.8LV6GASUpstream FrontFront upstream oxygen sensor needed for proper functionality near exhaust manifold.; Walker Products Aftermarket
2004AudiA6 Quattro4.2LV8GASUpstream RightInstall upstream oxygen sensor on the right side.; Walker Products Aftermarket
2004AudiA6 Quattro4.2LV8GASUpstream LeftInstall upstream oxygen sensor on the left side.; Walker Products Aftermarket
2004VolkswagenPassat2.8LV6GASUpstream RearUpstream oxygen sensor for rear exhaust system.; Walker Products Aftermarket
2004VolkswagenPassat2.8LV6GASUpstream FrontFront upstream oxygen sensor needed for proper functionality near exhaust manifold.; Walker Products Aftermarket
2003AudiA6 Quattro4.2LV8GASUpstream RightInstall upstream oxygen sensor on the right side.; Walker Products Aftermarket
2003AudiA6 Quattro4.2LV8GASUpstream LeftInstall upstream oxygen sensor on the left side.; Walker Products Aftermarket
2003AudiS64.2LV8GASUpstream RightInstall upstream oxygen sensor on the right side.; Walker Products Aftermarket
2003AudiS64.2LV8GASUpstream LeftInstall upstream oxygen sensor on the left side.; Walker Products Aftermarket
2003VolkswagenPassat2.8LV6GASUpstream RearUpstream oxygen sensor for rear exhaust system.; Walker Products Aftermarket
2003VolkswagenPassat2.8LV6GASUpstream FrontFront upstream oxygen sensor needed for proper functionality near exhaust manifold.; Walker Products Aftermarket
2002AudiA6 Quattro4.2LV8GASUpstream RightInstall upstream oxygen sensor on the right side.; Walker Products Aftermarket
2002AudiA6 Quattro4.2LV8GASUpstream LeftInstall upstream oxygen sensor on the left side.; Walker Products Aftermarket
2002AudiRS42.7LV6GASUpstreamInstall upstream oxygen sensor for optimal performance.; Walker Products Aftermarket
2002AudiS42.7LV6GASUpstream RightInstall upstream oxygen sensor on the right side.; Walker Products Aftermarket
2002AudiS42.7LV6GASUpstream LeftInstall upstream oxygen sensor on the left side.; Walker Products Aftermarket
2002AudiS64.2LV8GASUpstream RightInstall upstream oxygen sensor on the right side.; Walker Products Aftermarket
2002AudiS64.2LV8GASUpstream LeftInstall upstream oxygen sensor on the left side.; Walker Products Aftermarket
2002VolkswagenPassat2.8LV6GASUpstream RearUpstream oxygen sensor for rear exhaust system.; Walker Products Aftermarket
2002VolkswagenPassat2.8LV6GASUpstream FrontFront upstream oxygen sensor needed for proper functionality near exhaust manifold.; Walker Products Aftermarket
2001AudiA42.8LV6GASUpstream RightInstall upstream oxygen sensor on the right side.; Walker Products Aftermarket
2001AudiA42.8LV6GASUpstream LeftInstall upstream oxygen sensor on the left side.; Walker Products Aftermarket
2001AudiA4 Quattro2.8LV6GASUpstream RightInstall upstream oxygen sensor on the right side.; Walker Products Aftermarket
2001AudiA4 Quattro2.8LV6GASUpstream LeftInstall upstream oxygen sensor on the left side.; Walker Products Aftermarket
2001AudiA62.8LV6GASUpstream RightInstall upstream oxygen sensor on the right side.; Walker Products Aftermarket
2001AudiA62.8LV6GASUpstream LeftInstall upstream oxygen sensor on the left side.; Walker Products Aftermarket
2001AudiA6 Quattro4.2LV8GASUpstream RightInstall upstream oxygen sensor on the right side.; Walker Products Aftermarket
2001AudiA6 Quattro4.2LV8GASUpstream LeftInstall upstream oxygen sensor on the left side.; Walker Products Aftermarket
2001AudiA6 Quattro2.8LV6GASUpstream RightInstall upstream oxygen sensor on the right side.; Walker Products Aftermarket
2001AudiA6 Quattro2.8LV6GASUpstream LeftInstall upstream oxygen sensor on the left side.; Walker Products Aftermarket
2001AudiA6 Quattro2.7LV6GASUpstream RightInstall upstream oxygen sensor on the right side.; Walker Products Aftermarket
2001AudiA6 Quattro2.7LV6GASUpstream LeftInstall upstream oxygen sensor on the left side.; Walker Products Aftermarket
2001AudiAllroad Quattro2.7LV6GASUpstream RightInstall upstream oxygen sensor on the right side.; Walker Products Aftermarket
2001AudiAllroad Quattro2.7LV6GASUpstream LeftInstall upstream oxygen sensor on the left side.; Walker Products Aftermarket
2001AudiS42.7LV6GASUpstream RightInstall upstream oxygen sensor on the right side.; Walker Products Aftermarket
2001AudiS42.7LV6GASUpstream LeftInstall upstream oxygen sensor on the left side.; Walker Products Aftermarket
2001VolkswagenPassat2.8LV6GASUpstream RearUpstream oxygen sensor for rear exhaust system.; Walker Products Aftermarket
2001VolkswagenPassat2.8LV6GASUpstream FrontFront upstream oxygen sensor needed for proper functionality near exhaust manifold.; Walker Products Aftermarket
2000AudiA42.8LV6GASUpstream RightInstall upstream oxygen sensor on the right side.; Walker Products Aftermarket
2000AudiA42.8LV6GASUpstream LeftInstall upstream oxygen sensor on the left side.; Walker Products Aftermarket
2000AudiA4 Quattro2.8LV6GASUpstream RightInstall upstream oxygen sensor on the right side.; Walker Products Aftermarket
2000AudiA4 Quattro2.8LV6GASUpstream LeftInstall upstream oxygen sensor on the left side.; Walker Products Aftermarket
2000AudiA62.8LV6GASUpstream RightInstall upstream oxygen sensor on the right side.; Walker Products Aftermarket
2000AudiA62.8LV6GASUpstream LeftInstall upstream oxygen sensor on the left side.; Walker Products Aftermarket
2000AudiA6 Quattro4.2LV8GASUpstream RightInstall upstream oxygen sensor on the right side.; Walker Products Aftermarket
2000AudiA6 Quattro4.2LV8GASUpstream LeftInstall upstream oxygen sensor on the left side.; Walker Products Aftermarket
2000AudiA6 Quattro2.8LV6GASUpstream RightInstall upstream oxygen sensor on the right side.; Walker Products Aftermarket
2000AudiA6 Quattro2.8LV6GASUpstream LeftInstall upstream oxygen sensor on the left side.; Walker Products Aftermarket
2000AudiA6 Quattro2.7LV6GASUpstream RightInstall upstream oxygen sensor on the right side.; Walker Products Aftermarket
2000AudiA6 Quattro2.7LV6GASUpstream LeftInstall upstream oxygen sensor on the left side.; Walker Products Aftermarket
2000AudiS42.7LV6GASUpstream RightInstall upstream oxygen sensor on the right side.; Walker Products Aftermarket
2000AudiS42.7LV6GASUpstream LeftInstall upstream oxygen sensor on the left side.; Walker Products Aftermarket
2000VolkswagenPassat2.8LV6GASUpstream RearUpstream oxygen sensor for rear exhaust system.; Walker Products Aftermarket
2000VolkswagenPassat2.8LV6GASUpstream FrontFront upstream oxygen sensor needed for proper functionality near exhaust manifold.; Walker Products Aftermarket

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.