HomeEmission Control > SensorsWalker 250-23019 Oxygen Sensor - Upstream, Upstream Left or Upstream Right
Part #: 250-23019

Walker 250-23019 Oxygen Sensor - Upstream, Upstream Left or Upstream Right

Walker Products OE, Upstream
⚙️ 73 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Walker Products OE, Upstream
🚗Fitment: Aston Martin, Audi, Jaguar, Volvo, Yugo, and Alfa Romeo, DB7, S6, Vanden Plas, XJ12, XJ6, XJS, XJRS, 940, 740, Cabrio, GV, 780, 760, Milano, 4000, 244, 245, 745, and 242
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Overview of Walker 250-23019 Oxygen Sensor

The Walker 250-23019 oxygen sensor is designed for precise emission control in select Aston Martin, Audi, Jaguar, and Volvo vehicles. This heated oxygen sensor ensures accurate air-fuel mixture readings to optimize engine performance and reduce emissions.

  • Heated sensor type for faster response times
  • Specific fit for models including Aston Martin DB7, Audi S6, Jaguar XJ6, and Volvo 740
  • Threaded mounting with 18.0 mm thread diameter
  • 36.34 inches wiring harness length with 3 wires of 20 gauge
  • Radiused polygon connector shape with both male and female connectors
  • Overall length of 39.88 inches for proper installation

Detailed Product Description

This oxygen sensor from Walker Products OE is engineered to meet original equipment specifications for emission control systems. The heated sensor element allows for quicker activation, improving fuel efficiency and reducing harmful exhaust emissions. The 3-wire design with 20 gauge wiring ensures reliable electrical connections, while the radiused polygon connectors provide secure and precise fitment. The threaded mounting type with an 18.0 mm diameter thread allows for straightforward installation in compatible exhaust manifolds or pipes.

Walker Products OE is a product line focused on delivering components that match or exceed OEM standards, ensuring durability and performance. The 250-23019 oxygen sensor is part of this line, offering a direct replacement solution for specific vehicle applications.

Compatible Vehicles and Applications

  • Aston Martin DB7
  • Audi S6
  • Jaguar XJ6, XJ12, XJRS, XJS, Vanden Plas
  • Volvo 740, 745, 760, 780, 940, 4000

This sensor is designed specifically for these models, ensuring proper fit and function without modification.

Common Issues Addressed by This Oxygen Sensor

  • Incorrect air-fuel mixture readings causing poor fuel economy
  • Check engine light triggered by faulty oxygen sensor signals
  • Increased emissions due to sensor failure
  • Engine performance issues such as rough idling or hesitation
  • Failed emissions tests related to sensor malfunction

Installation Notes and Tips

Ensure the engine and exhaust system are cool before installation to avoid injury. Use appropriate tools to remove the old sensor and install the Walker 250-23019 sensor by threading it securely into place. Verify the wiring harness length of 36.34 inches is sufficient for your vehicle’s routing. Confirm connector compatibility with the radiused polygon shape and both male and female connectors. After installation, clear any diagnostic trouble codes and perform a test drive to confirm proper operation.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards and undergo rigorous testing to ensure reliability and durability. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship. Refer to the product documentation or manufacturer for exact warranty terms.

BrandWalker
Part Number250-23019
PositionWalker Products OE, Upstream
Connector GenderFemale
Connector GenderMale
Connector ShapeRadiused Polygon
Mounting TypeThreaded
Overall Length39.88
Sensor TypeHeated
Thread Diameter18.0
Universal Or Specific FitSpecific
Wire Gauge Measurement20
Wire Quantity3
Wiring Harness Length36.34

This part fits 73 vehicles. Search below:

YearMakeModelSubmodelLitersCylindersFuel TypePositionNotes
1998Aston MartinDB73.2LL6GASUpstreamInstall upstream oxygen sensor for optimal performance.; Walker Products OE
1997Aston MartinDB73.2LL6GASUpstreamInstall upstream oxygen sensor for optimal performance.; Walker Products OE
1997AudiS6Base2.2LL5GASUpstreamInstall upstream oxygen sensor for optimal performance.; Walker Products OE
1996AudiS6Base2.2LL5GASUpstreamInstall upstream oxygen sensor for optimal performance.; Walker Products OE
1994JaguarVanden Plas4.0LL6GASUpstreamInstall upstream oxygen sensor for optimal performance.; Walker Products OE
1994JaguarXJ126.0LV12GASUpstream RightInstall upstream oxygen sensor on the right side.; Walker Products OE
1994JaguarXJ126.0LV12GASUpstream LeftInstall upstream oxygen sensor on the left side.; Walker Products OE
1994JaguarXJ64.0LL6GASUpstreamInstall upstream oxygen sensor for optimal performance.; Walker Products OE
1994JaguarXJS6.0LV12GASUpstream RightInstall upstream oxygen sensor on the right side.; Walker Products OE
1994JaguarXJS6.0LV12GASUpstream LeftInstall upstream oxygen sensor on the left side.; Walker Products OE
1994JaguarXJS4.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products OE
1994JaguarXJS4.0LL6GASUpstreamUpstream oxygen sensor for cylinders 4-6.; Walker Products OE
1993JaguarVanden Plas4.0LL6GASUpstreamInstall upstream oxygen sensor for optimal performance.; Walker Products OE
1993JaguarXJ64.0LL6GASUpstreamInstall upstream oxygen sensor for optimal performance.; Walker Products OE
1993JaguarXJRS6.0LV12GASUpstreamInstall upstream oxygen sensor for optimal performance.; Walker Products OE
1993JaguarXJS4.0LL6GASUpstreamCyl 1-3, From Chassis # 190528; Cil 1-3, De el chasis # 190528; Upstream; Cyl 1-3; Walker Products OE
1993JaguarXJS4.0LL6GASUpstreamCyl 4-6, From Chassis # 190528; Cil 4-6, Del chasis # 190528; Upstream; Cyl 4-6; Walker Products OE
1993JaguarXJS4.0LL6GASUpstreamCyl 1-3, From Chassis # 190528; Upstream; Cyl 1-3; Walker Products OE
1993JaguarXJS4.0LL6GASUpstreamCyl 4-6, From Chassis # 190528; Upstream; Cyl 4-6; Walker Products OE
1993Volvo9402.3LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1993Volvo9402.3LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1992JaguarVanden Plas4.0LL6GASUpstreamInstall upstream oxygen sensor for optimal performance.; Walker Products OE
1992JaguarXJ64.0LL6GASUpstreamInstall upstream oxygen sensor for optimal performance.; Walker Products OE
1992Volvo7402.3LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1992Volvo7402.3LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1992Volvo9402.3LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1992Volvo9402.3LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1991Volvo7402.3LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1991Volvo7402.3LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1991Volvo7802.3LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1991Volvo7802.3LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1991Volvo9402.3LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1991Volvo9402.3LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1990Volvo7402.3LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1990Volvo7402.3LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1990Volvo7602.3LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1990Volvo7602.3LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1990Volvo7802.3LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1990Volvo7802.3LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1989Volvo7402.3LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1989Volvo7402.3LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1989Volvo7602.3LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1989Volvo7602.3LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1989Volvo7802.3LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1989Volvo7802.3LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1988Volvo7402.3LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1988Volvo7402.3LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1988Volvo7602.3LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1988Volvo7602.3LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1987Audi4000S1.8LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1987Audi4000S1.8LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1987Volvo7402.3LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1987Volvo7402.3LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1987Volvo7602.3LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1987Volvo7602.3LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1986Audi4000S1.8LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1986Audi4000S1.8LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1986Volvo7402.3LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1986Volvo7402.3LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1986Volvo7602.8LV6GASUpstreamInstall upstream oxygen sensor for optimal performance.; Walker Products OE
1986Volvo7602.3LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1986Volvo7602.3LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1985Audi4000S1.8LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1985Audi4000S1.8LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1985Volvo7402.3LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1985Volvo7402.3LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1985Volvo7452.3LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1985Volvo7452.3LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1985Volvo7602.8LV6GASUpstreamInstall upstream oxygen sensor for optimal performance.; Walker Products OE
1985Volvo7602.3LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1985Volvo7602.3LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1984Volvo7602.3LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1984Volvo7602.3LL4GASUpstreamFront 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.