HomeEmission Control > SensorsWalker 350-34149 Oxygen Sensor - Upstream
Part #: 350-34149

Walker 350-34149 Oxygen Sensor - Upstream

Walker Products Aftermarket, Upstream
8 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: Mercedes-Benz, C230
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Walker 350-34149 Oxygen Sensor for Mercedes-Benz C230

The Walker 350-34149 oxygen sensor is designed specifically for the Mercedes-Benz C230, 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 Mercedes-Benz C230 models
  • 43.43-inch wiring harness length with 4 wires of 20 gauge
  • Threaded mounting with 18.0 mm thread diameter
  • Radiused polygon male connector for reliable connection
  • Overall length of 46.97 inches for proper fitment

Detailed Product Description

This Walker Products Aftermarket oxygen sensor (part number 350-34149) is engineered to meet the exact specifications required by Mercedes-Benz C230 vehicles. The sensor is heated, which helps it reach operating temperature quickly, improving fuel efficiency and reducing emissions. The 4-wire design with 20 gauge wire ensures stable signal transmission and durability. The wiring harness length of 43.43 inches and overall length of 46.97 inches provide ample reach for installation without excess slack. The sensor’s threaded mounting type with an 18.0 mm thread diameter allows for secure and precise placement in the exhaust system. The radiused polygon male connector ensures a proper and secure electrical connection, minimizing the risk of disconnection or signal loss.

Walker Products Aftermarket Line

The Walker Products Aftermarket line focuses on providing reliable emission control components that meet or exceed OEM standards. This oxygen sensor is part of that line, offering a direct replacement solution for Mercedes-Benz C230 owners who require a sensor that matches factory specifications for fit, form, and function.

Common Applications and Issues Addressed

  • Restores accurate oxygen sensing for proper air-fuel mixture control
  • Helps resolve check engine light codes related to oxygen sensor failure
  • Improves fuel economy by ensuring efficient combustion
  • Reduces harmful emissions by maintaining proper sensor operation
  • Prevents rough idling and engine performance issues caused by faulty sensors

Installation Notes and Tips

  • Ensure the vehicle is cool before installation to avoid burns
  • Use appropriate tools for threaded sensor removal and installation
  • Verify connector type matches the vehicle harness (radiused polygon male)
  • Do not over-tighten the sensor; follow torque specifications for 18.0 mm thread diameter
  • Inspect wiring harness for damage before installation

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet strict quality standards, ensuring reliable performance and durability. The 350-34149 oxygen sensor undergoes rigorous testing to comply with emission control requirements. Warranty details are provided by Walker and typically cover defects in materials and workmanship under normal use.

BrandWalker
Part Number350-34149
PositionWalker Products Aftermarket, Upstream
Connector GenderMale
Connector ShapeRadiused Polygon
Mounting TypeThreaded
Overall Length46.97
Sensor TypeHeated
Thread Diameter18.0
Universal Or Specific FitSpecific
Wire Gauge Measurement20
Wire Quantity4
Wiring Harness Length43.43

This part fits 8 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2000Mercedes-BenzC2302.3LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2000Mercedes-BenzC2302.3LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
1999Mercedes-BenzC2302.3LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
1999Mercedes-BenzC2302.3LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
1998Mercedes-BenzC2302.3LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
1998Mercedes-BenzC2302.3LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
1997Mercedes-BenzC2302.3LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
1997Mercedes-BenzC2302.3LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; 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.