HomeEmission Control > SensorsWalker 350-341056 Oxygen Sensor - Downstream
Part #: 350-341056

Walker 350-341056 Oxygen Sensor - Downstream

Walker Products Aftermarket, Downstream
14 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$63.30Free Shipping
Free ShippingNo Cost to Continental U.S.
Free Returns*Wrong fit? No cost
60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
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: Fiat, 124 Spider
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Walker Oxygen Sensor for Fiat 124 Spider

The Walker 350-341056 oxygen sensor is designed specifically for the Fiat 124 Spider, ensuring precise emission control and optimal engine performance. This sensor plays a critical role in monitoring exhaust gases to maintain efficient combustion and reduce emissions.

  • Compatible with Fiat 124 Spider models
  • Part number 350-341056 for accurate identification
  • Part of the Walker Products Aftermarket line
  • Designed for emission control sensor applications
  • Ensures reliable oxygen level detection for engine management

Walker Products Aftermarket Line Details

The Walker Products Aftermarket line offers a range of emission control components engineered to meet or exceed OEM specifications. This product line focuses on providing dependable sensors and parts that integrate seamlessly with vehicle systems, including the oxygen sensor 350-341056 for the Fiat 124 Spider. Walker’s aftermarket solutions are developed to support emission compliance and maintain vehicle performance over time.

Product Description and Function

The Walker 350-341056 oxygen sensor is an essential component in the emission control system of the Fiat 124 Spider. It measures the oxygen content in the exhaust gases and sends this data to the engine control unit (ECU). This information allows the ECU to adjust the air-fuel mixture for optimal combustion efficiency, which helps reduce harmful emissions and improve fuel economy. The sensor’s precise readings contribute to maintaining the vehicle’s emission standards and overall engine health.

Common Issues Addressed by This Oxygen Sensor

  • Engine performance problems due to incorrect air-fuel mixture
  • Increased emissions and potential failed emissions tests
  • Reduced fuel efficiency and higher fuel consumption
  • Check engine light triggered by faulty oxygen sensor readings
  • Rough idling or engine hesitation during acceleration

Installation Notes and Tips

  • Ensure the vehicle is cool before beginning installation to avoid burns
  • Use proper tools to remove the old sensor without damaging the exhaust system
  • Apply anti-seize compound on the sensor threads if recommended by the manufacturer
  • Verify the sensor connector is securely attached to prevent signal issues
  • Clear any diagnostic trouble codes after installation to reset the ECU

Quality Assurance and Warranty

Walker oxygen sensors, including part number 350-341056, are manufactured to meet stringent quality standards. The Walker Products Aftermarket line is known for consistent performance and durability. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship to ensure reliability and customer confidence.

This part fits 14 vehicles. Search below:

YearMakeModelSubmodelLitersCylindersFuel TypePositionNotes
2020Fiat124 SpiderUrbana1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2020Fiat124 SpiderLusso1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2020Fiat124 SpiderClassica1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2020Fiat124 SpiderAbarth1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2019Fiat124 SpiderUrbana1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2019Fiat124 SpiderLusso1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2019Fiat124 SpiderClassica1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2019Fiat124 SpiderAbarth1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2018Fiat124 SpiderLusso1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2018Fiat124 SpiderClassica1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2018Fiat124 SpiderAbarth1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2017Fiat124 SpiderLusso1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2017Fiat124 SpiderClassica1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2017Fiat124 SpiderAbarth1.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific 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.