HomeEmission Control > SensorsWalker 250-54023 Oxygen Sensor - Upstream
Part #: 250-54023

Walker 250-54023 Oxygen Sensor - Upstream

Walker Products OE, Upstream
4 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Walker Products OE, Upstream
Fitment: Acura, RSX
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Walker 250-54023 Oxygen Sensor for Acura RSX

The Walker 250-54023 oxygen sensor is designed specifically for the Acura RSX, providing precise emission control and engine performance monitoring. This heated oxygen sensor ensures accurate readings for optimal fuel efficiency and reduced emissions.

  • Heated oxygen sensor with 4 wires for reliable operation
  • Specific fit for Acura RSX models
  • Threaded mounting type with 18.0 mm thread diameter
  • Radiused polygon male connector for secure electrical connection
  • Wiring harness length of 18.23 inches and overall length of 21.77 inches
  • 20 gauge wire for durability and signal integrity

Detailed Features and Specifications

This Walker Products OE oxygen sensor (part number 250-54023) is engineered to meet the exact specifications required by Acura RSX vehicles. The sensor features a heated design, which allows it to reach operating temperature quickly, improving emission control during cold starts. The 4-wire configuration supports both the sensor signal and heater circuit, ensuring consistent performance. The radiused polygon male connector provides a secure and precise fit, minimizing the risk of electrical issues. With an 18.0 mm threaded mounting type, installation aligns with factory standards. The wiring harness length of 18.23 inches and overall length of 21.77 inches accommodate the vehicle’s engine bay layout for proper routing and connection.

Walker Products OE Brand Line Information

The Walker Products OE line focuses on delivering original equipment quality parts that meet or exceed OEM standards. This oxygen sensor is part of that line, ensuring compatibility and reliability for Acura RSX owners who require a direct replacement part. Walker Products OE parts are designed to integrate seamlessly with vehicle systems, supporting emission control and engine management functions.

Common Applications and Issues Addressed

  • Restores accurate oxygen sensing for proper air-fuel mixture control
  • Helps resolve engine performance problems such as rough idling or hesitation
  • Reduces emissions by ensuring correct catalytic converter operation
  • Prevents check engine light triggers related to oxygen sensor faults
  • Improves fuel economy by maintaining optimal combustion efficiency

Installation Notes and Tips

When installing the Walker 250-54023 oxygen sensor on an Acura RSX, ensure the engine is cool to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the threaded mounting hole. Confirm the connector matches the radiused polygon male design for a secure fit. Properly route the wiring harness to prevent contact with hot or moving engine parts. Torque the sensor to manufacturer specifications to ensure a proper seal and function.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet stringent quality standards, ensuring durability and reliable performance. This part is backed by Walker’s quality assurance processes, providing confidence in its fitment and function for Acura RSX vehicles. Warranty details are available through Walker and typically cover defects in materials and workmanship.

BrandWalker
Part Number250-54023
PositionWalker Products OE, Upstream
Connector GenderMale
Connector ShapeRadiused Polygon
Mounting TypeThreaded
Overall Length21.77
Sensor TypeHeated
Thread Diameter18.0
Universal Or Specific FitSpecific
Wire Gauge Measurement20
Wire Quantity4
Wiring Harness Length18.23

This part fits 4 vehicles. Search below:

YearMakeModelSubmodelTransmissionLitersCylindersFuel TypePositionNotes
2006AcuraRSXBaseAutomatic2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2006AcuraRSXBaseAutomatic2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
2005AcuraRSXBaseAutomatic2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2005AcuraRSXBaseAutomatic2.0LL4GASUpstreamFront 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.