HomeEmission Control > SensorsWalker 250-54014 Oxygen Sensor - Upstream
Part #: 250-54014

Walker 250-54014 Oxygen Sensor - Upstream

Walker Products OE, Upstream
⚙️ 6 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$198.76Free 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
🚗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 250-54014 Oxygen Sensor for Acura RSX

The Walker 250-54014 oxygen sensor is designed specifically for the Acura RSX, providing precise emission control and engine performance monitoring. This heated oxygen sensor features a threaded mounting type and a radiused polygon male connector for secure and accurate installation.

  • Heated oxygen sensor for improved response time
  • Specific fit for Acura RSX models
  • Threaded mounting with 18.0 mm thread diameter
  • 15.28-inch wiring harness length with 4 wires
  • 20 gauge wire measurement for durability
  • Radiused polygon male connector for reliable connection
  • Overall length of 18.82 inches for proper fitment

Detailed Product Description

This Walker Products OE oxygen sensor (part number 250-54014) is engineered to meet the exact specifications of the Acura RSX. The heated sensor type ensures faster warm-up times, which helps the engine control unit (ECU) maintain optimal air-fuel mixture for efficient combustion and reduced emissions. The sensor’s 4-wire design includes a heating element and signal wires, enhancing sensor responsiveness and durability.

The wiring harness length of 15.28 inches allows for proper routing within the engine bay, while the 20 gauge wire measurement supports reliable electrical conductivity. The radiused polygon male connector ensures a secure and precise connection to the vehicle’s wiring harness, minimizing the risk of signal loss or disconnection. The threaded mounting type with an 18.0 mm diameter provides a secure fit into the exhaust system, maintaining sensor stability under various operating conditions.

Walker Products OE Brand Line

Walker Products OE is a product line focused on delivering original equipment quality and fitment. This oxygen sensor is part of that line, ensuring compatibility and performance that align with factory standards. Choosing a Walker Products OE sensor like the 250-54014 helps maintain the integrity of your Acura RSX’s emission control system.

Common Applications and Issues Addressed

  • Restores accurate oxygen level readings for proper fuel mixture
  • Helps resolve rough idling and engine hesitation
  • Reduces increased emissions and failed emissions tests
  • Prevents check engine light related to oxygen sensor faults
  • Improves fuel efficiency by optimizing combustion

Installation Notes and Tips

  • Ensure the vehicle is cool before sensor removal to avoid burns
  • Use appropriate oxygen sensor socket for threaded removal and installation
  • Check connector compatibility with the radiused polygon male plug
  • Do not over-tighten; torque to manufacturer specifications
  • Inspect wiring harness for damage before installation

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards for durability and performance. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship. Using the 250-54014 oxygen sensor helps ensure reliable operation of your Acura RSX’s emission control system.

BrandWalker
Part Number250-54014
PositionWalker Products OE, Upstream
Connector GenderMale
Connector ShapeRadiused Polygon
Mounting TypeThreaded
Overall Length18.82
Sensor TypeHeated
Thread Diameter18.0
Universal Or Specific FitSpecific
Wire Gauge Measurement20
Wire Quantity4
Wiring Harness Length15.28

This part fits 6 vehicles. Search below:

YearMakeModelTransmissionLitersCylindersFuel TypePositionNotes
2004AcuraRSXAutomatic2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2004AcuraRSXAutomatic2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
2003AcuraRSXAutomatic2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2003AcuraRSXAutomatic2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
2002AcuraRSXAutomatic2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2002AcuraRSXAutomatic2.0LL4GASUpstreamFront 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.