OE Quality
60-Day Returns

Walker 350-31005 Oxygen Sensor - Upstream
Overview of Walker 350-31005 Oxygen Sensor
The Walker 350-31005 oxygen sensor is designed specifically for select Lexus and Toyota models, including the GS300, MR2, SC300, and Supra. This non-heated sensor features a precise flange mount design and a radiused polygon male connector, ensuring a secure and accurate fit for emission control systems.
- Wiring harness length: 15.28 inches
- Wire gauge measurement: 20 gauge
- Sensor type: Non heated oxygen sensor
- Specific fit for Lexus and Toyota models
- Wire quantity: 1
- Connector shape: Radiused polygon
- Connector gender: Male
- Thread diameter: 18.0 mm
- Overall length: 18.82 inches
- Mounting type: Flange mount
Detailed Product Description
This oxygen sensor from Walker Products Aftermarket is engineered to meet the exact specifications required by the emission control systems of Lexus GS300, Toyota MR2, SC300, and Supra vehicles. The non-heated sensor design is suitable for applications where a heated sensor is not necessary, providing reliable oxygen level readings to the engine control unit. The 20-gauge wire and 15.28-inch wiring harness length allow for proper connectivity and installation without excess slack or strain. The radiused polygon male connector and flange mount ensure a secure and precise fit, reducing the risk of leaks or sensor misalignment. With an 18.0 mm thread diameter and an overall length of 18.82 inches, this sensor is tailored for specific fitment rather than universal use.
Compatible Vehicles and Applications
- Compatible with Lexus GS300 models requiring a non-heated oxygen sensor
- Designed for Toyota MR2 vehicles with specific emission sensor needs
- Fits Toyota SC300 models for accurate oxygen sensing
- Suitable for Toyota Supra applications requiring a flange mount oxygen sensor
Installation Notes and Tips
- Ensure the vehicle is cooled before sensor removal to avoid burns
- Use appropriate tools to avoid damaging the 18.0 mm thread diameter
- Verify connector orientation matches the radiused polygon male connector
- Check wiring harness length (15.28 inches) for proper routing and secure connections
- Confirm flange mount seating to prevent exhaust leaks
Quality Assurance and Warranty
Walker Products Aftermarket maintains strict quality control standards for their oxygen sensors, including the 350-31005 part. Each sensor undergoes testing to ensure accurate readings and durability under typical operating conditions. While specific warranty details are not provided here, Walker Products Aftermarket is known for producing reliable emission control components that meet OEM specifications.
| Brand | Walker |
|---|---|
| Part Number | 350-31005 |
| Position | Walker Products Aftermarket, Upstream |
| Connector Gender | Male |
| Connector Shape | Radiused Polygon |
| Mounting Type | Flange Mount |
| Overall Length | 18.82 |
| Sensor Type | Non Heated |
| Thread Diameter | 18.0 |
| Universal Or Specific Fit | Specific |
| Wire Gauge Measurement | 20 |
| Wire Quantity | 1 |
| Wiring Harness Length | 15.28 |
This part fits 34 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 1995 | Lexus | SC300 | 3.0L | L6 | GAS | Upstream | Cyl 4-6, Exc. Calif-ESV; OE Replacement |
| 1995 | Toyota | MR2 | 2.2L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket |
| 1995 | Toyota | MR2 | 2.2L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket |
| 1995 | Toyota | Supra | 3.0L | L6 | GAS | Upstream | Cyl 1-3, Non Calif-ESV; Cil 1-3, no Calif-ESV; Upstream; Cyl 1-3; Walker Products Aftermarket |
| 1995 | Toyota | Supra | 3.0L | L6 | GAS | Upstream | Cyl 4-6, Non Calif-ESV; Cil 4-6, para no Calif-ESV; Upstream; Cyl 4-6; Walker Products Aftermarket |
| 1995 | Toyota | Supra | 3.0L | L6 | GAS | Upstream | Cyl 1-3, Non Calif-ESV; Upstream; Cyl 1-3; Walker Products Aftermarket |
| 1995 | Toyota | Supra | 3.0L | L6 | GAS | Upstream | Cylinders 4-6, non-California ESV, upstream.; Walker Products Aftermarket |
| 1994 | Lexus | GS300 | 3.0L | L6 | GAS | Upstream | Non Calif-ESV; No Calif-ESV; Upstream; Walker Products Aftermarket |
| 1994 | Lexus | GS300 | 3.0L | L6 | GAS | Upstream | Upstream oxygen sensor for non-California ESV vehicles.; Walker Products Aftermarket |
| 1994 | Lexus | SC300 | 3.0L | L6 | GAS | Upstream | Cyl 4-6, To 1/94; Cil 4-6, al 1/94; Upstream; Cyl 4-6; Walker Products Aftermarket |
| 1994 | Lexus | SC300 | 3.0L | L6 | GAS | Upstream | Cyl 1-3, To 1/94; Cil 1-3, al 1/94; Upstream; Cyl 1-3; Walker Products Aftermarket |
| 1994 | Lexus | SC300 | 3.0L | L6 | GAS | Upstream | Cyl 4-6, To 1/94; Upstream; Cyl 4-6; Walker Products Aftermarket |
| 1994 | Lexus | SC300 | 3.0L | L6 | GAS | Upstream | Cyl 1-3, To 1/94; Upstream; Cyl 1-3; Walker Products Aftermarket |
| 1994 | Toyota | MR2 | 2.2L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket |
| 1994 | Toyota | MR2 | 2.2L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket |
| 1994 | Toyota | Supra | 3.0L | L6 | GAS | Upstream | Cyl 1-3, Non Calif-ESV; Cil 1-3, no Calif-ESV; Upstream; Cyl 1-3; Walker Products Aftermarket |
| 1994 | Toyota | Supra | 3.0L | L6 | GAS | Upstream | Cyl 4-6, Non Calif-ESV; Cil 4-6, para no Calif-ESV; Upstream; Cyl 4-6; Walker Products Aftermarket |
| 1994 | Toyota | Supra | 3.0L | L6 | GAS | Upstream | Cyl 1-3, Non Calif-ESV; Upstream; Cyl 1-3; Walker Products Aftermarket |
| 1994 | Toyota | Supra | 3.0L | L6 | GAS | Upstream | Cylinders 4-6, non-California ESV, upstream.; Walker Products Aftermarket |
| 1993 | Lexus | GS300 | 3.0L | L6 | GAS | Upstream | Non Calif-ESV; No Calif-ESV; Upstream; Walker Products Aftermarket |
| 1993 | Lexus | GS300 | 3.0L | L6 | GAS | Upstream | Upstream oxygen sensor for non-California ESV vehicles.; Walker Products Aftermarket |
| 1993 | Lexus | SC300 | 3.0L | L6 | GAS | Upstream | Upstream oxygen sensor for cylinders 4-6.; Walker Products Aftermarket |
| 1993 | Lexus | SC300 | 3.0L | L6 | GAS | Upstream | Oxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket |
| 1993 | Toyota | MR2 | 2.2L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket |
| 1993 | Toyota | MR2 | 2.2L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket |
| 1993 | Toyota | Supra | 3.0L | L6 | GAS | Upstream | Cyl 4-6, Non Calif-ESV; Cil 4-6, para no Calif-ESV; Upstream; Cyl 4-6; Walker Products Aftermarket |
| 1993 | Toyota | Supra | 3.0L | L6 | GAS | Upstream | Cyl 1-3, Non Calif-ESV; Cil 1-3, no Calif-ESV; Upstream; Cyl 1-3; Walker Products Aftermarket |
| 1993 | Toyota | Supra | 3.0L | L6 | GAS | Upstream | Cylinders 4-6, non-California ESV, upstream.; Walker Products Aftermarket |
| 1993 | Toyota | Supra | 3.0L | L6 | GAS | Upstream | Cyl 1-3, Non Calif-ESV; Upstream; Cyl 1-3; Walker Products Aftermarket |
| 1992 | Lexus | SC300 | 3.0L | L6 | GAS | Upstream | Upstream oxygen sensor for cylinders 4-6.; Walker Products Aftermarket |
| 1992 | Lexus | SC300 | 3.0L | L6 | GAS | Upstream | Oxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket |
| 1992 | Toyota | MR2 | 2.2L | L4 | GAS | Upstream | From 1/92; B1S1; Del 1/92; Upstream; Walker Products Aftermarket |
| 1992 | Toyota | MR2 | 2.2L | L4 | GAS | Upstream | From 1/92; Del 1/92; Upstream; B1S1; Walker Products Aftermarket |
| 1992 | Toyota | MR2 | 2.2L | L4 | GAS | Upstream | From 1/92; B1S1; Upstream; Walker Products Aftermarket |
* 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.