HomeEmission Control > SensorsWalker 350-34303 Oxygen Sensor
Part #: 350-34303

Walker 350-34303 Oxygen Sensor

Walker Products Aftermarket, Upstream
42 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
Walker Products Aftermarket, Upstream
Fitment: Saab, Peugeot, and Porsche, 9-3, 9-3X, 206, Grand Raid, 911, and 306
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Walker 350-34303 Oxygen Sensor

The Walker 350-34303 oxygen sensor is designed specifically for select Cadillac, Porsche, and Saab models, including the Saab 9-3, 9-3X, 911, and BLS. This heated oxygen sensor provides accurate emissions control by monitoring exhaust gases and ensuring optimal engine performance.

  • Heated sensor type for faster response times
  • Specific fit for Cadillac, Porsche, and Saab vehicles
  • 19.21-inch wiring harness length for precise installation
  • 22-gauge wire measurement with 4 wires for reliable signal transmission
  • Radiused polygon male connector for secure connection
  • Threaded mounting type with 18.0 mm thread diameter
  • Overall length of 22.76 inches for proper fitment

Detailed Product Description

This Walker Products Aftermarket oxygen sensor (part number 350-34303) is engineered to meet the exact specifications of your vehicle’s emission system. The heated sensor element allows the sensor to reach operating temperature quickly, improving fuel efficiency and reducing emissions. The 4-wire design includes a heater circuit and signal wires, ensuring accurate oxygen level readings. The radiused polygon male connector and threaded mounting type provide a secure and stable installation, minimizing the risk of leaks or disconnections. With a wiring harness length of 19.21 inches and an overall length of 22.76 inches, this sensor fits precisely in the exhaust system of compatible Cadillac, Porsche, and Saab models.

Walker Products Aftermarket Line

The Walker Products Aftermarket line focuses on providing reliable emission control components that meet or exceed OEM standards. This product line emphasizes durability and precise fitment, making it suitable for professional repairs and maintenance. The 350-34303 oxygen sensor is part of this line, ensuring compatibility and performance for specific vehicle applications.

Common Applications and Issues Addressed

  • Restores proper air-fuel mixture readings for improved engine efficiency
  • Helps resolve check engine light triggers related to oxygen sensor faults
  • Reduces emissions by providing accurate exhaust gas data
  • Prevents rough idling and poor acceleration caused by faulty sensors
  • Supports compliance with emission regulations for Cadillac, Porsche, and Saab vehicles

Installation Notes and Tips

  • Ensure the vehicle is cool before sensor removal to avoid burns
  • Use appropriate tools for threaded sensor removal and installation
  • Verify connector type matches the vehicle harness before installation
  • Do not over-tighten the sensor to prevent damage to threads
  • Check wiring harness length and routing to avoid interference with moving parts

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet strict quality standards. Each sensor undergoes testing to ensure reliable performance and durability. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship to support long-term use in Cadillac, Porsche, and Saab vehicles.

BrandWalker
Part Number350-34303
PositionWalker Products Aftermarket, Upstream
Connector GenderMale
Connector ShapeRadiused Polygon
Mounting TypeThreaded
Overall Length22.76
Sensor TypeHeated
Thread Diameter18.0
Universal Or Specific FitSpecific
Wire Gauge Measurement22
Wire Quantity4
Wiring Harness Length19.21

This part fits 42 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2011Saab9-32.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2011Saab9-32.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2011Saab9-3X2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2011Saab9-3X2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2010Saab9-32.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2010Saab9-32.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2010Saab9-3X2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2010Saab9-3X2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2009Saab9-32.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2009Saab9-32.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2008CadillacBLS2.0LL4UpstreamOE Replacement
2008Saab9-32.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2008Saab9-32.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2007CadillacBLS2.0LL4UpstreamOE Replacement
2007Saab9-32.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2007Saab9-32.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2006Saab9-32.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2006Saab9-32.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2005Porsche9113.8LH6GASUpstream RightInstall upstream oxygen sensor on the right side.; Walker Products Aftermarket
2005Porsche9113.8LH6GASUpstream LeftInstall upstream oxygen sensor on the left side.; Walker Products Aftermarket
2005Porsche9113.8LH6GASDownstream RightInstall downstream oxygen sensor on the right side.; Walker Products Aftermarket
2005Porsche9113.8LH6GASDownstream LeftDownstream left oxygen sensor required.; Walker Products Aftermarket
2005Porsche9113.6LH6GASUpstream RightInstall upstream oxygen sensor on the right side.; Walker Products Aftermarket
2005Porsche9113.6LH6GASUpstream LeftInstall upstream oxygen sensor on the left side.; Walker Products Aftermarket
2005Porsche9113.6LH6GASDownstream RightInstall downstream oxygen sensor on the right side.; Walker Products Aftermarket
2005Porsche9113.6LH6GASDownstream LeftDownstream left oxygen sensor required.; Walker Products Aftermarket
2005Saab9-32.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2005Saab9-32.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2004Porsche9113.6LH6GASUpstream RightInstall upstream oxygen sensor on the right side.; Walker Products Aftermarket
2004Porsche9113.6LH6GASUpstream LeftInstall upstream oxygen sensor on the left side.; Walker Products Aftermarket
2004Porsche9113.6LH6GASDownstream RightInstall downstream oxygen sensor on the right side.; Walker Products Aftermarket
2004Porsche9113.6LH6GASDownstream LeftDownstream left oxygen sensor required.; Walker Products Aftermarket
2004Saab9-32.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2004Saab9-32.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2003Porsche9113.6LH6GASUpstream RightInstall upstream oxygen sensor on the right side.; Walker Products Aftermarket
2003Porsche9113.6LH6GASUpstream LeftInstall upstream oxygen sensor on the left side.; Walker Products Aftermarket
2003Porsche9113.6LH6GASDownstream RightInstall downstream oxygen sensor on the right side.; Walker Products Aftermarket
2003Porsche9113.6LH6GASDownstream LeftDownstream left oxygen sensor required.; Walker Products Aftermarket
2002Porsche9113.6LH6GASUpstream RightInstall upstream oxygen sensor on the right side.; Walker Products Aftermarket
2002Porsche9113.6LH6GASUpstream LeftInstall upstream oxygen sensor on the left side.; Walker Products Aftermarket
2002Porsche9113.6LH6GASDownstream RightInstall downstream oxygen sensor on the right side.; Walker Products Aftermarket
2002Porsche9113.6LH6GASDownstream LeftDownstream left oxygen sensor required.; 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.