HomeEmission Control > SensorsWalker 250-24091 Oxygen Sensor - Upstream
Part #: 250-24091

Walker 250-24091 Oxygen Sensor - Upstream

Walker Products OE, Upstream
16 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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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: Hyundai and Mitsubishi, Elantra, Sonata, and Galant
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Walker 250-24091 Oxygen Sensor

The Walker 250-24091 oxygen sensor is designed specifically for Hyundai and Mitsubishi vehicles, including models like the Elantra, Sonata, and Galant. This heated oxygen sensor provides accurate emissions control by monitoring exhaust gases and ensuring optimal engine performance.

  • Heated sensor type for faster response times
  • Specific fit for Hyundai Elantra, Sonata, and Mitsubishi Galant
  • 15.28-inch wiring harness length for precise installation
  • 20 gauge wire measurement with 4 wires for reliable signal transmission
  • Radiused polygon male connector for secure connection
  • 18.0 mm threaded mounting type for easy replacement
  • Overall length of 18.82 inches for proper fitment

Detailed Product Description

This Walker Products OE oxygen sensor (part number 250-24091) is engineered to meet the exact specifications of Hyundai and Mitsubishi vehicles, ensuring compatibility and performance. The heated sensor design allows the unit to reach operating temperature quickly, improving fuel efficiency and reducing emissions. Featuring a 15.28-inch wiring harness and 20 gauge wires, this sensor maintains signal integrity and durability. The radiused polygon male connector and threaded mounting type simplify installation and provide a secure fit. With four wires, the sensor supports accurate data transmission to the vehicle’s engine control unit.

The Walker Products OE line focuses on delivering original equipment quality parts that match or exceed factory standards. This oxygen sensor is part of that line, offering a reliable replacement option for emission control systems in Hyundai Elantra, Sonata, and Mitsubishi Galant models.

Common Applications and Issues Addressed

  • Restores proper air-fuel mixture readings for improved engine performance
  • Helps resolve check engine light triggers related to oxygen sensor faults
  • Reduces emissions by providing accurate exhaust gas data
  • Prevents poor fuel economy caused by faulty sensor readings
  • Supports smooth engine idling and acceleration

Installation Notes and Tips

When installing the Walker 250-24091 oxygen sensor, ensure the threaded mounting hole is clean and free of debris. Use anti-seize compound on the threads if recommended by the vehicle manufacturer to prevent seizing. Verify the radiused polygon male connector aligns correctly with the vehicle harness to avoid damage. The 15.28-inch wiring harness length provides flexibility for routing during installation. Always disconnect the battery before sensor replacement to avoid electrical issues.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards, ensuring durability and reliable performance. This part number 250-24091 undergoes rigorous testing to comply with emission control requirements for Hyundai and Mitsubishi vehicles. Warranty coverage details should be confirmed with the product documentation or supplier, as it may vary by region.

BrandWalker
Part Number250-24091
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 16 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
1993HyundaiElantra1.8LL4GASUpstreamTo 7/1/93; B1S1; Al 7/1/93; Upstream; Walker Products OE
1993HyundaiElantra1.6LL4GASUpstreamTo 7/1/93; B1S1; Al 7/1/93; Upstream; Walker Products OE
1993HyundaiElantra1.8LL4GASUpstreamTo 7/1/93; Al 7/1/93; Upstream; B1S1; Walker Products OE
1993HyundaiElantra1.6LL4GASUpstreamTo 7/1/93; Al 7/1/93; Upstream; B1S1; Walker Products OE
1993HyundaiElantra1.8LL4GASUpstreamUpstream Oxygen Sensor for vehicles manufactured prior to 7/1/93.; Walker Products OE
1993HyundaiElantra1.6LL4GASUpstreamUpstream Oxygen Sensor for vehicles manufactured prior to 7/1/93.; Walker Products OE
1993HyundaiSonata2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1993HyundaiSonata2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1992HyundaiElantra1.6LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1992HyundaiElantra1.6LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1992HyundaiSonata2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1992HyundaiSonata2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1992MitsubishiGalant2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1992MitsubishiGalant2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1991MitsubishiGalant2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1991MitsubishiGalant2.0LL4GASUpstreamFront 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.