OE Quality
60-Day Returns

Walker 250-23019 Oxygen Sensor - Upstream, Upstream Left or Upstream Right
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.
| Brand | Walker |
| Part Number | 250-23019 |
| Position | Walker Products OE, Upstream |
| Connector Gender | Female |
| Connector Gender | Male |
| Connector Shape | Radiused Polygon |
| Mounting Type | Threaded |
| Overall Length | 39.88 |
| Sensor Type | Heated |
| Thread Diameter | 18.0 |
| Universal Or Specific Fit | Specific |
| Wire Gauge Measurement | 20 |
| Wire Quantity | 3 |
| Wiring Harness Length | 36.34 |
This part fits 73 vehicles. Search below:
| Year | Make | Model | Submodel | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|---|
| 1998 | Aston Martin | DB7 | 3.2L | L6 | GAS | Upstream | Install upstream oxygen sensor for optimal performance.; Walker Products OE | |
| 1997 | Aston Martin | DB7 | 3.2L | L6 | GAS | Upstream | Install upstream oxygen sensor for optimal performance.; Walker Products OE | |
| 1997 | Audi | S6 | Base | 2.2L | L5 | GAS | Upstream | Install upstream oxygen sensor for optimal performance.; Walker Products OE |
| 1996 | Audi | S6 | Base | 2.2L | L5 | GAS | Upstream | Install upstream oxygen sensor for optimal performance.; Walker Products OE |
| 1994 | Jaguar | Vanden Plas | 4.0L | L6 | GAS | Upstream | Install upstream oxygen sensor for optimal performance.; Walker Products OE | |
| 1994 | Jaguar | XJ12 | 6.0L | V12 | GAS | Upstream Right | Install upstream oxygen sensor on the right side.; Walker Products OE | |
| 1994 | Jaguar | XJ12 | 6.0L | V12 | GAS | Upstream Left | Install upstream oxygen sensor on the left side.; Walker Products OE | |
| 1994 | Jaguar | XJ6 | 4.0L | L6 | GAS | Upstream | Install upstream oxygen sensor for optimal performance.; Walker Products OE | |
| 1994 | Jaguar | XJS | 6.0L | V12 | GAS | Upstream Right | Install upstream oxygen sensor on the right side.; Walker Products OE | |
| 1994 | Jaguar | XJS | 6.0L | V12 | GAS | Upstream Left | Install upstream oxygen sensor on the left side.; Walker Products OE | |
| 1994 | Jaguar | XJS | 4.0L | L6 | GAS | Upstream | Oxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products OE | |
| 1994 | Jaguar | XJS | 4.0L | L6 | GAS | Upstream | Upstream oxygen sensor for cylinders 4-6.; Walker Products OE | |
| 1993 | Jaguar | Vanden Plas | 4.0L | L6 | GAS | Upstream | Install upstream oxygen sensor for optimal performance.; Walker Products OE | |
| 1993 | Jaguar | XJ6 | 4.0L | L6 | GAS | Upstream | Install upstream oxygen sensor for optimal performance.; Walker Products OE | |
| 1993 | Jaguar | XJRS | 6.0L | V12 | GAS | Upstream | Install upstream oxygen sensor for optimal performance.; Walker Products OE | |
| 1993 | Jaguar | XJS | 4.0L | L6 | GAS | Upstream | Cyl 1-3, From Chassis # 190528; Cil 1-3, De el chasis # 190528; Upstream; Cyl 1-3; Walker Products OE | |
| 1993 | Jaguar | XJS | 4.0L | L6 | GAS | Upstream | Cyl 4-6, From Chassis # 190528; Cil 4-6, Del chasis # 190528; Upstream; Cyl 4-6; Walker Products OE | |
| 1993 | Jaguar | XJS | 4.0L | L6 | GAS | Upstream | Cyl 1-3, From Chassis # 190528; Upstream; Cyl 1-3; Walker Products OE | |
| 1993 | Jaguar | XJS | 4.0L | L6 | GAS | Upstream | Cyl 4-6, From Chassis # 190528; Upstream; Cyl 4-6; Walker Products OE | |
| 1993 | Volvo | 940 | 2.3L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE | |
| 1993 | Volvo | 940 | 2.3L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products OE | |
| 1992 | Jaguar | Vanden Plas | 4.0L | L6 | GAS | Upstream | Install upstream oxygen sensor for optimal performance.; Walker Products OE | |
| 1992 | Jaguar | XJ6 | 4.0L | L6 | GAS | Upstream | Install upstream oxygen sensor for optimal performance.; Walker Products OE | |
| 1992 | Volvo | 740 | 2.3L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE | |
| 1992 | Volvo | 740 | 2.3L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products OE | |
| 1992 | Volvo | 940 | 2.3L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE | |
| 1992 | Volvo | 940 | 2.3L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products OE | |
| 1991 | Volvo | 740 | 2.3L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE | |
| 1991 | Volvo | 740 | 2.3L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products OE | |
| 1991 | Volvo | 780 | 2.3L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE | |
| 1991 | Volvo | 780 | 2.3L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products OE | |
| 1991 | Volvo | 940 | 2.3L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE | |
| 1991 | Volvo | 940 | 2.3L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products OE | |
| 1990 | Volvo | 740 | 2.3L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE | |
| 1990 | Volvo | 740 | 2.3L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products OE | |
| 1990 | Volvo | 760 | 2.3L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE | |
| 1990 | Volvo | 760 | 2.3L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products OE | |
| 1990 | Volvo | 780 | 2.3L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE | |
| 1990 | Volvo | 780 | 2.3L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products OE | |
| 1989 | Volvo | 740 | 2.3L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE | |
| 1989 | Volvo | 740 | 2.3L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products OE | |
| 1989 | Volvo | 760 | 2.3L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE | |
| 1989 | Volvo | 760 | 2.3L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products OE | |
| 1989 | Volvo | 780 | 2.3L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE | |
| 1989 | Volvo | 780 | 2.3L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products OE | |
| 1988 | Volvo | 740 | 2.3L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE | |
| 1988 | Volvo | 740 | 2.3L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products OE | |
| 1988 | Volvo | 760 | 2.3L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE | |
| 1988 | Volvo | 760 | 2.3L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products OE | |
| 1987 | Audi | 4000 | S | 1.8L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE |
| 1987 | Audi | 4000 | S | 1.8L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products OE |
| 1987 | Volvo | 740 | 2.3L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE | |
| 1987 | Volvo | 740 | 2.3L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products OE | |
| 1987 | Volvo | 760 | 2.3L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE | |
| 1987 | Volvo | 760 | 2.3L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products OE | |
| 1986 | Audi | 4000 | S | 1.8L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE |
| 1986 | Audi | 4000 | S | 1.8L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products OE |
| 1986 | Volvo | 740 | 2.3L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE | |
| 1986 | Volvo | 740 | 2.3L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products OE | |
| 1986 | Volvo | 760 | 2.8L | V6 | GAS | Upstream | Install upstream oxygen sensor for optimal performance.; Walker Products OE | |
| 1986 | Volvo | 760 | 2.3L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE | |
| 1986 | Volvo | 760 | 2.3L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products OE | |
| 1985 | Audi | 4000 | S | 1.8L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE |
| 1985 | Audi | 4000 | S | 1.8L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products OE |
| 1985 | Volvo | 740 | 2.3L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE | |
| 1985 | Volvo | 740 | 2.3L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products OE | |
| 1985 | Volvo | 745 | 2.3L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE | |
| 1985 | Volvo | 745 | 2.3L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products OE | |
| 1985 | Volvo | 760 | 2.8L | V6 | GAS | Upstream | Install upstream oxygen sensor for optimal performance.; Walker Products OE | |
| 1985 | Volvo | 760 | 2.3L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE | |
| 1985 | Volvo | 760 | 2.3L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products OE | |
| 1984 | Volvo | 760 | 2.3L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE | |
| 1984 | Volvo | 760 | 2.3L | L4 | GAS | Upstream | Front 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.