HomeEmission Control > SensorsWalker 250-241285 Oxygen Sensor - Downstream Rear
Part #: 250-241285

Walker 250-241285 Oxygen Sensor - Downstream Rear

OE Base Sensor, Downstream Rear
⚙️ 3 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦OE Base Sensor, Downstream Rear
🚗Fitment: Acura, RLX
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Overview of Walker OE Base Sensor Oxygen Sensor

The Walker OE Base Sensor 250-241285 is a heated narrow-band oxygen sensor designed specifically for Acura RLX models. This sensor ensures accurate air-fuel mixture readings to help maintain optimal engine performance and emissions control.

  • Heated narrow-band oxygen sensor for precise emissions monitoring
  • Specific fit for Acura RLX vehicles
  • Four-wire design with spade terminal type for reliable electrical connection
  • Oblong female connector with four male terminals
  • Thread size M18 - 1.5 and wrench size 22 for proper installation

Detailed Product Description

The Walker OE Base Sensor line focuses on providing original equipment quality oxygen sensors that meet or exceed factory specifications. The 250-241285 oxygen sensor is a heated narrow-band sensor, which means it quickly reaches operating temperature to provide accurate oxygen level readings in the exhaust stream. This sensor features a four-wire configuration with spade terminals and an oblong female connector, ensuring a secure and precise electrical connection. The sensor’s thread size of M18 - 1.5 and wrench size of 22 mm are designed for straightforward installation on compatible Acura RLX models.

Compatible Vehicles and Applications

This oxygen sensor is specifically engineered for use with Acura RLX vehicles. It is not a universal fit and should be used only where the exact part number 250-241285 is specified. Using this sensor helps maintain proper engine management and emissions control systems.

  • Helps regulate air-fuel mixture for efficient combustion
  • Supports emission control system compliance
  • Reduces engine performance issues related to faulty oxygen sensors
  • Prevents check engine light triggers caused by sensor failure
  • Improves fuel economy by providing accurate sensor data

Installation Notes and Tips

When installing the Walker OE Base Sensor 250-241285 on an Acura RLX, ensure the engine is cool before removal to avoid injury. Use a 22 mm wrench to remove the old sensor and install the new one with the M18 - 1.5 thread size. Confirm the four-wire spade terminal connections match the vehicle’s wiring harness and that the oblong female connector is securely attached. Proper installation is critical for sensor performance and longevity.

Quality Assurance and Warranty

Walker OE Base Sensors are manufactured to meet original equipment standards, ensuring reliable performance and durability. While specific warranty details are not provided here, Walker products typically come with a limited warranty against defects in materials and workmanship. Refer to the product packaging or manufacturer documentation for exact warranty terms.

BrandWalker
Part Number250-241285
PositionOE Base Sensor, Downstream Rear
HeatedYes
Sensor TypeNarrow-band
Terminal TypeSpade
Universal Or Specific FitSpecific
Wire Quantity4
Connector ShapeOblong
Terminal Quantity4
Connector GenderFemale
Terminal GenderMale
Wrench Size22
Thread SizeM18 - 1.5

This part fits 3 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2020AcuraRLX3.5LV6GASDownstream RearB1S2; OE Base Sensor
2019AcuraRLX3.5LV6GASDownstream RearB1S2; OE Base Sensor
2018AcuraRLX3.5LV6GASDownstream RearB1S2; OE Base Sensor

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.