HomeEmission Control > SensorsWalker 250-25149 Oxygen Sensor - Upstream, Upstream Left or Upstream Right
Part #: 250-25149

Walker 250-25149 Oxygen Sensor - Upstream, Upstream Left or Upstream Right

Walker Products OE, Upstream Left
51 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$138.99Free 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 OE, Upstream Left
Fitment: Acura and Honda, NSX, Accord, and CR-V
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 250-25149

The Walker 250-25149 oxygen sensor is designed for precise emission control in select Acura and Honda vehicles. This sensor helps maintain optimal engine performance and emissions compliance for models such as the Accord, CR-V, and NSX.

  • Compatible with Acura and Honda Accord, CR-V, and NSX models
  • Part of the Walker Products OE line for reliable OEM-quality replacement
  • Ensures accurate air-fuel mixture readings for emission control systems
  • Direct fit with part number 250-25149 for easy installation
  • Supports vehicle emission standards and engine efficiency

Detailed Product Description

The Walker 250-25149 oxygen sensor is engineered to provide accurate feedback to the engine control unit (ECU) by measuring oxygen levels in the exhaust gases. This data is critical for adjusting the air-fuel ratio, which directly impacts fuel economy and emissions output. Designed specifically for Acura and Honda vehicles including the Accord, CR-V, and NSX, this sensor ensures compatibility and reliable performance. The part number 250-25149 corresponds to a direct replacement sensor that meets original equipment specifications.

This oxygen sensor is part of the Walker Products OE line, which focuses on delivering original equipment quality parts. Walker Products OE components are manufactured to meet or exceed OEM standards, providing a dependable solution for emission control system repairs. Using a sensor from this product line helps maintain the integrity of your vehicle’s emission system and supports compliance with environmental regulations.

Common Applications and Issues Addressed

  • Restores proper air-fuel mixture readings for improved engine performance
  • Resolves check engine light triggers related to oxygen sensor faults
  • Helps reduce excessive emissions and failed emissions tests
  • Prevents rough idling and poor fuel economy caused by faulty sensors
  • Supports smooth engine operation and prevents catalytic converter damage

Installation Notes and Tips

  • Ensure vehicle compatibility with Acura and Honda Accord, CR-V, or NSX before installation
  • Use appropriate tools to avoid damage to the sensor or wiring harness
  • Follow manufacturer torque specifications when tightening the sensor
  • Inspect wiring and connectors for corrosion or damage during replacement
  • Clear diagnostic trouble codes after installation to reset the ECU

Quality Assurance and Warranty

The Walker 250-25149 oxygen sensor is manufactured to meet strict quality standards consistent with original equipment parts. As part of the Walker Products OE line, it undergoes rigorous testing to ensure durability and accurate performance. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship to provide confidence in the product’s reliability.

This part fits 51 vehicles. Search below:

YearMakeModelSubmodelLitersCylindersFuel TypePositionNotes
2022AcuraNSX3.5LV6Upstream RightOE Base Sensor
2022HondaAccord2.0LL4FULL HYBRID EV-GAS (FHEV)UpstreamOE Base Sensor
2022HondaCR-V2.0LL4UpstreamOE Base Sensor
2021AcuraNSX3.5LV6ELECTRIC/GASUpstream RightCompatible with upstream right oxygen sensor in the B1S1 position.; Walker Products OE
2021AcuraNSX3.5LV6ELECTRIC/GASUpstream LeftUpstream oxygen sensor before catalytic converter on left side.; Walker Products OE
2021AcuraNSX3.5LV6ELECTRIC/GASUpstream RightUpstream oxygen sensor for right bank position 1; Walker Products OE
2021AcuraNSX3.5LV6ELECTRIC/GASUpstream LeftUpstream oxygen sensor for Bank 2 Sensor 1.; Walker Products OE
2021HondaAccordHybrid2.0LL4ELECTRIC/GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2021HondaAccordHybrid2.0LL4ELECTRIC/GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
2021HondaCR-VHybrid Touring2.0LL4ELECTRIC/GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2021HondaCR-VHybrid EX-L2.0LL4ELECTRIC/GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2021HondaCR-VHybrid EX2.0LL4ELECTRIC/GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2021HondaCR-VHybrid Touring2.0LL4ELECTRIC/GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
2021HondaCR-VHybrid EX-L2.0LL4ELECTRIC/GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
2021HondaCR-VHybrid EX2.0LL4ELECTRIC/GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
2020AcuraNSX3.5LV6ELECTRIC/GASUpstream RightCompatible with upstream right oxygen sensor in the B1S1 position.; Walker Products OE
2020AcuraNSX3.5LV6ELECTRIC/GASUpstream LeftUpstream oxygen sensor before catalytic converter on left side.; Walker Products OE
2020AcuraNSX3.5LV6ELECTRIC/GASUpstream RightUpstream oxygen sensor for right bank position 1; Walker Products OE
2020AcuraNSX3.5LV6ELECTRIC/GASUpstream LeftUpstream oxygen sensor for Bank 2 Sensor 1.; Walker Products OE
2020HondaAccordHybrid2.0LL4ELECTRIC/GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2020HondaAccordHybrid2.0LL4ELECTRIC/GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
2020HondaCR-V2.0LL4ELECTRIC/GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2020HondaCR-V2.0LL4ELECTRIC/GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
2019AcuraNSXBase3.5LV6ELECTRIC/GASUpstream RightCompatible with upstream right oxygen sensor in the B1S1 position.; Walker Products OE
2019AcuraNSXBase3.5LV6ELECTRIC/GASUpstream LeftUpstream oxygen sensor before catalytic converter on left side.; Walker Products OE
2019AcuraNSXBase3.5LV6ELECTRIC/GASUpstream RightUpstream oxygen sensor for right bank position 1; Walker Products OE
2019AcuraNSXBase3.5LV6ELECTRIC/GASUpstream LeftUpstream oxygen sensor for Bank 2 Sensor 1.; Walker Products OE
2019HondaAccordHybrid2.0LL4ELECTRIC/GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2019HondaAccordHybrid Touring2.0LL4ELECTRIC/GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2019HondaAccordHybrid EX-L2.0LL4ELECTRIC/GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2019HondaAccordHybrid EX2.0LL4ELECTRIC/GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2019HondaAccordHybrid2.0LL4ELECTRIC/GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
2019HondaAccordHybrid Touring2.0LL4ELECTRIC/GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
2019HondaAccordHybrid EX-L2.0LL4ELECTRIC/GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
2019HondaAccordHybrid EX2.0LL4ELECTRIC/GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
2018AcuraNSXBase3.5LV6ELECTRIC/GASUpstream RightCompatible with upstream right oxygen sensor in the B1S1 position.; Walker Products OE
2018AcuraNSXBase3.5LV6ELECTRIC/GASUpstream LeftUpstream oxygen sensor before catalytic converter on left side.; Walker Products OE
2018AcuraNSXBase3.5LV6ELECTRIC/GASUpstream RightUpstream oxygen sensor for right bank position 1; Walker Products OE
2018AcuraNSXBase3.5LV6ELECTRIC/GASUpstream LeftUpstream oxygen sensor for Bank 2 Sensor 1.; Walker Products OE
2018HondaAccord2.0LL4ELECTRIC/GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2018HondaAccord2.0LL4ELECTRIC/GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
2017AcuraNSXBase3.5LV6ELECTRIC/GASUpstream RightCompatible with upstream right oxygen sensor in the B1S1 position.; Walker Products OE
2017AcuraNSXBase3.5LV6ELECTRIC/GASUpstream LeftUpstream oxygen sensor before catalytic converter on left side.; Walker Products OE
2017AcuraNSXBase3.5LV6ELECTRIC/GASUpstream RightUpstream oxygen sensor for right bank position 1; Walker Products OE
2017AcuraNSXBase3.5LV6ELECTRIC/GASUpstream LeftUpstream oxygen sensor for Bank 2 Sensor 1.; Walker Products OE
2017HondaAccordHybrid2.0LL4ELECTRIC/GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2017HondaAccordHybrid Touring2.0LL4ELECTRIC/GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2017HondaAccordHybrid EX-L2.0LL4ELECTRIC/GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2017HondaAccordHybrid2.0LL4ELECTRIC/GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
2017HondaAccordHybrid Touring2.0LL4ELECTRIC/GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
2017HondaAccordHybrid EX-L2.0LL4ELECTRIC/GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE

* 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.