HomeEmission Control > SensorsWalker 350-34156 Oxygen Sensor - Downstream
Part #: 350-34156

Walker 350-34156 Oxygen Sensor - Downstream

Walker Products Aftermarket, Downstream
49 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, Downstream
Fitment: Alfa Romeo and Fiat, Giulia, Stelvio, and 500
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Walker 350-34156 Oxygen Sensor for Fiat 500

The Walker 350-34156 oxygen sensor is designed specifically for the Fiat 500, ensuring precise emission control and optimal engine performance. This heated oxygen sensor features a threaded mounting type and a radiused polygon female connector for secure installation.

  • Heated oxygen sensor for accurate emissions monitoring
  • Specific fit for Fiat 500 models
  • Threaded mounting with 18.0 mm thread diameter
  • 25.12-inch wiring harness length with 4 wires of 20 gauge
  • Radiused polygon female connector for reliable connection
  • Overall length of 28.66 inches for proper fitment

Detailed Product Description

The Walker 350-34156 oxygen sensor is part of the Walker Products Aftermarket line, which focuses on 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 25.12 inches in length and includes four 20-gauge wires, ensuring compatibility with the Fiat 500’s electrical system. The connector features a radiused polygon shape with a female gender, designed for a secure and precise fit. The threaded mounting type with an 18.0 mm diameter allows for straightforward installation in the designated exhaust port.

Compatible Vehicles and Applications

This oxygen sensor is compatible specifically with Fiat 500 models, making it a direct replacement part for emission control systems in these vehicles. The part number 350-34156 ensures you receive the correct sensor designed to meet the exact specifications required for the Fiat 500’s engine management system.

  • Helps maintain proper air-fuel mixture for efficient combustion
  • Reduces harmful emissions by providing accurate oxygen level data
  • Prevents engine performance issues related to faulty sensors
  • Supports the vehicle’s onboard diagnostics system
  • Addresses check engine light triggers related to oxygen sensor faults

Installation Notes and Tips

When installing the Walker 350-34156 oxygen sensor on a Fiat 500, ensure the engine and exhaust system are cool to avoid burns. Use the correct tools to remove the old sensor and avoid damaging the wiring harness or connector. Verify the connector’s radiused polygon shape and female gender match the vehicle’s harness before installation. Thread the sensor carefully into the exhaust port to the specified torque to prevent leaks or sensor damage.

Quality Assurance and Warranty

Walker Products Aftermarket parts, including the 350-34156 oxygen sensor, are manufactured to meet or exceed OEM standards for fit, form, and function. This oxygen sensor undergoes rigorous testing to ensure durability and reliable performance in emission control applications. Warranty coverage details should be confirmed with the product documentation or supplier, as it may vary by region.

BrandWalker
Part Number350-34156
PositionWalker Products Aftermarket, Downstream
Connector GenderFemale
Connector ShapeRadiused Polygon
Mounting TypeThreaded
Overall Length28.66
Sensor TypeHeated
Thread Diameter18.0
Universal Or Specific FitSpecific
Wire Gauge Measurement20
Wire Quantity4
Wiring Harness Length25.12

This part fits 49 vehicles. Search below:

YearMakeModelSubmodelLitersCylindersFuel TypePositionNotes
2019Fiat500c Pop1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2019Fiat500c Lounge1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2019Fiat500Pop1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2019Fiat500Lounge1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2019Fiat500Abarth1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2019Fiat500Abarth Cabrio1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2019Fiat5001957 Retro Edition1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2018Fiat500c Pop1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2018Fiat500c Lounge1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2018Fiat500Pop1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2018Fiat500Lounge1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2018Fiat500Abarth1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2018Fiat500Abarth Cabrio1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2017Fiat500c Pop1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2017Fiat500c Lounge1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2017Fiat500Pop1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2017Fiat500Lounge1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2017Fiat500Abarth1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2017Fiat500Abarth Cabrio1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2016Fiat500c Pop1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2016Fiat500c Lounge1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2016Fiat500c Easy1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2016Fiat500Turbo1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2016Fiat500Sport1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2016Fiat500Pop1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2016Fiat500Lounge1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2016Fiat500Easy1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2016Fiat500Abarth1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2016Fiat500Abarth Cabrio1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2015Fiat500c Pop1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2015Fiat500c Lounge1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2015Fiat500Turbo1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2015Fiat500Sport1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2015Fiat500Pop1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2015Fiat500Lounge1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2015Fiat500Abarth1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2015Fiat500Abarth Cabrio1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2014Fiat5001.4LL4GASDownstreamTurbo Engine B1S2 Downstream Oxygen Sensor for turbocharged motors.; Walker Products Aftermarket
2014Fiat5001.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2014Fiat5001.4LL4GASDownstreamTurbo engine downstream oxygen sensor for B1S2 position.; Walker Products Aftermarket
2014Fiat5001.4LL4GASDownstreamTurbo Engine; B1S2; Downstream; Walker Products Aftermarket
2013Fiat5001.4LL4GASDownstreamTurbo Engine B1S2 Downstream Oxygen Sensor for turbocharged motors.; Walker Products Aftermarket
2013Fiat5001.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2013Fiat5001.4LL4GASDownstreamTurbo engine downstream oxygen sensor for B1S2 position.; Walker Products Aftermarket
2013Fiat5001.4LL4GASDownstreamTurbo Engine; B1S2; Downstream; Walker Products Aftermarket
2012Fiat5001.4LL4GASDownstreamTurbo Engine B1S2 Downstream Oxygen Sensor for turbocharged motors.; Walker Products Aftermarket
2012Fiat5001.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2012Fiat5001.4LL4GASDownstreamTurbo engine downstream oxygen sensor for B1S2 position.; Walker Products Aftermarket
2012Fiat5001.4LL4GASDownstreamTurbo Engine; B1S2; Downstream; 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.