Homeβ€Ί Emission Control > Sensorsβ€Ί Walker 250-241214 Oxygen Sensor - Downstream
Part #: 250-241214

Walker 250-241214 Oxygen Sensor - Downstream

Walker Products OE, Downstream
61 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement β€” Bolt-on fit, no modifications needed
Walker Products OE, Downstream
Fitment: BMW, M240i, 440i, 440i Gran Coupe, 440i xDrive, 440i xDrive Gran Coupe, 540i, 540i xDrive, 740i, 740i xDrive, M240i xDrive, X3, X4, 340i GT xDrive, 640i xDrive Gran Turismo, 340i, and 340i xDrive
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Fast Shipping β€” Most orders ship same business day before 1pm CST

Overview of Walker Products OE Oxygen Sensor 250-241214

The Walker Products OE Oxygen Sensor 250-241214 is designed specifically for select BMW models, ensuring precise emission control and optimal engine performance. This heated oxygen sensor features a 19.21-inch wiring harness and a 4-wire configuration tailored for accurate data transmission.

  • Heated oxygen sensor with 4-wire design for reliable operation
  • Specific fitment for BMW models including 340i, 440i, 540i, and X3 among others
  • 19.21-inch wiring harness length for proper installation
  • 20 gauge wire measurement ensuring durability and signal integrity
  • Female connector with 18mm thread diameter for secure attachment
  • Overall length of 22.76 inches to accommodate OEM specifications

Detailed Product Description

This Walker Products OE oxygen sensor (part number 250-241214) is engineered to meet the exact specifications of various BMW vehicles such as the 340i, 440i Gran Coupe, 540i xDrive, and X3. The heated sensor type allows for faster warm-up times, improving emission control efficiency shortly after engine start. The 4-wire design includes two wires for the heating element and two for the sensor signal, enhancing responsiveness and accuracy. With a wiring harness length of 19.21 inches and an overall length of 22.76 inches, this sensor fits precisely in the designated mounting locations without modification.

The female connector and 18mm thread diameter ensure compatibility with factory wiring and mounting points, reducing installation complexity. The 20 gauge wire measurement supports robust electrical performance, minimizing signal loss or interference during operation.

Walker Products OE Brand Line Information

The Walker Products OE line focuses on delivering emission control components that meet or exceed original equipment standards. This oxygen sensor is part of that line, designed to provide reliable performance and fitment for specific vehicle applications. By adhering to OEM specifications, Walker Products OE sensors help maintain factory-level emissions compliance and engine efficiency.

Common Applications and Issues Addressed

  • Restores accurate oxygen sensing for proper air-fuel mixture control
  • Resolves check engine light triggers related to oxygen sensor faults
  • Improves fuel economy by ensuring correct sensor feedback
  • Reduces harmful emissions by maintaining proper catalytic converter function
  • Eliminates rough idling or engine hesitation caused by faulty sensors

Installation Notes and Tips

When installing the Walker Products OE oxygen sensor 250-241214, ensure the vehicle is compatible with the specific BMW models listed. Use appropriate tools to avoid damaging the 18mm threaded sensor body. Verify the female connector matches the factory harness before installation. It is recommended to replace the sensor when the engine is cool to prevent burns and to apply anti-seize compound on the threads if not pre-applied.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet stringent quality standards, ensuring durability and consistent performance. While specific warranty details may vary, these sensors typically come with a limited warranty covering defects in materials and workmanship. Always consult product documentation or the supplier for exact warranty terms.

BrandWalker
Part Number250-241214
PositionWalker Products OE, Downstream
Connector GenderFemale
Overall Length22.76
Sensor TypeHeated
Thread Diameter18.00
Universal Or Specific FitSpecific
Wire Gauge Measurement20
Wire Quantity4
Wiring Harness Length19.21

This part fits 61 vehicles. Search below:

YearMakeModelSubmodelLitersCylindersFuel TypePositionNotes
2021BMWM240i3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2021BMWM240i xDrive3.0LL6DownstreamOE Base Sensor
2021BMWX33.0LL6DownstreamOE Base Sensor
2021BMWX43.0LL6DownstreamOE Base Sensor
2020BMW440i3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2020BMW440i Gran Coupe3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2020BMW440i xDrive3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2020BMW440i xDrive Gran Coupe3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2020BMW540i3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2020BMW540i xDrive3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2020BMW740i3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2020BMW740i xDrive3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2020BMWM240i3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2020BMWM240i xDrive3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2020BMWX3M40i3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2020BMWX4M40i3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2019BMW340i GT xDrive3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2019BMW440i3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2019BMW440i Gran Coupe3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2019BMW440i xDrive3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2019BMW440i xDrive Gran Coupe3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2019BMW540i3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2019BMW540i xDrive3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2019BMW640i xDrive Gran Turismo3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2019BMW740i3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2019BMW740i xDrive3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2019BMWM240i3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2019BMWM240i xDrive3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2019BMWX3M40i3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2019BMWX43.0LL6DownstreamOE Base Sensor
2018BMW340i3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2018BMW340i GT xDrive3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2018BMW340i xDrive3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2018BMW440i3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2018BMW440i Gran Coupe3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2018BMW440i xDrive3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2018BMW440i xDrive Gran Coupe3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2018BMW540i3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2018BMW540i xDrive3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2018BMW640i xDrive Gran Turismo3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2018BMW740i3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2018BMW740i xDrive3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2018BMWM240i3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2018BMWM240i xDrive3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2018BMWX33.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2017BMW340i3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2017BMW340i GT xDrive3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2017BMW340i xDrive3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2017BMW440i3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2017BMW440i Gran Coupe3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2017BMW440i xDrive3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2017BMW440i xDrive Gran Coupe3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2017BMW540i3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2017BMW540i xDrive3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2017BMW740i3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2017BMW740i xDrive3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2017BMWM240i3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2017BMWM240i xDrive3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2016BMW340i3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2016BMW340i xDrive3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2016BMW740i3.0LL6GASDownstreamFits downstream bank 1 sensor 2 on specific 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.