HomeEmission Control > SensorsWalker 350-33009 Oxygen Sensor - Upstream
Part #: 350-33009

Walker 350-33009 Oxygen Sensor - Upstream

Walker Products Aftermarket, Upstream
6 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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OE Direct Replacement — Bolt-on fit, no modifications needed
Walker Products Aftermarket, Upstream
Fitment: Volvo, 940
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Walker 350-33009 Oxygen Sensor for Volvo 940

The Walker 350-33009 oxygen sensor is designed specifically for the Volvo 940, ensuring precise emission control and optimal engine performance. This heated oxygen sensor features a threaded mounting type and a radiused polygon male connector for secure installation.

  • Heated oxygen sensor for accurate emissions monitoring
  • Specific fit for Volvo 940 models
  • Threaded mounting with 18.0 mm thread diameter
  • 71.38 inches wiring harness length with 3 wires of 20 gauge
  • Radiused polygon male connector for reliable connection
  • Overall length of 74.92 inches for proper fitment

Detailed Product Description

The Walker 350-33009 oxygen sensor is part of the Walker Products Aftermarket line, known for providing reliable emission control components tailored to specific vehicle applications. This sensor is a heated type, which helps it reach operating temperature faster, improving fuel efficiency and reducing emissions. The sensor’s wiring harness measures 71.38 inches in length and includes three 20-gauge wires, ensuring compatibility with the Volvo 940’s electrical system. The radiused polygon male connector offers a secure and precise fit, minimizing the risk of connection issues. With a threaded mounting type and an 18.0 mm thread diameter, installation is straightforward and compatible with the original equipment specifications.

Common Applications and Issues Addressed

  • Monitors oxygen levels in exhaust gases for optimal air-fuel mixture
  • Helps reduce harmful emissions and maintain compliance with environmental standards
  • Prevents engine performance issues related to faulty oxygen sensors
  • Addresses rough idling, poor fuel economy, and increased emissions
  • Supports proper operation of the vehicle’s engine control unit (ECU)

Installation Notes and Tips

  • Ensure the vehicle is cool before removing the old sensor to avoid burns
  • Use appropriate tools to avoid damaging the threaded mounting
  • Verify connector type matches the vehicle’s wiring harness for proper fit
  • Apply anti-seize compound on threads if recommended by the manufacturer
  • Check for any exhaust leaks after installation to ensure sensor accuracy

Quality Assurance and Warranty

Walker Products Aftermarket parts, including the 350-33009 oxygen sensor, are manufactured to meet or exceed OEM standards for durability and performance. This oxygen sensor undergoes rigorous testing to ensure reliable operation within the Volvo 940’s emission control system. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.

BrandWalker
Part Number350-33009
PositionWalker Products Aftermarket, Upstream
Connector GenderMale
Connector ShapeRadiused Polygon
Mounting TypeThreaded
Overall Length74.92
Sensor TypeHeated
Thread Diameter18.0
Universal Or Specific FitSpecific
Wire Gauge Measurement20
Wire Quantity3
Wiring Harness Length71.38

This part fits 6 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
1995Volvo9402.3LL4GASUpstreamw/oRegina Engine Control System; B1S1; Sin sistema de control del motor regina; Upstream; Walker Products Aftermarket
1995Volvo9402.3LL4GASUpstreamUpstream Oxygen Sensor for vehicles without Regina Engine Control System; No se necesita sistema de control del motor regina; B1S1; Walker Products Aftermarket
1995Volvo9402.3LL4GASUpstreamUpstream Oxygen Sensor for vehicles without Regina Engine Control System, B1S1.; Walker Products Aftermarket
1994Volvo9402.3LL4GASUpstreamw/oRegina Engine Control System; B1S1; Sin sistema de control del motor regina; Upstream; Walker Products Aftermarket
1994Volvo9402.3LL4GASUpstreamUpstream Oxygen Sensor for vehicles without Regina Engine Control System; No se necesita sistema de control del motor regina; B1S1; Walker Products Aftermarket
1994Volvo9402.3LL4GASUpstreamUpstream Oxygen Sensor for vehicles without Regina Engine Control System, B1S1.; 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.