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Walker 350-34357 Oxygen Sensor - Upstream
| Brand | Walker 350-34357 |
|---|---|
| Position | Upstream |
| Connector Gender | Female |
| Connector Shape | Radiused Polygon |
| Mounting Type | Flange Mount |
| Overall Length | 23.74 |
| Sensor Type | Heated |
| Thread Diameter | 18.0 |
| Universal Or Specific Fit | Specific |
| Wire Gauge Measurement | 20 |
| Wire Quantity | 4 |
| Wiring Harness Length | 20.2 |
| Product line | Walker Products Aftermarket |
| Fits | Toyota · 2 vehicles |
OE replacement. Engineered as an original-equipment-style sensor for specific applications.
Heated sensor. Provides fast, accurate feedback to the ECU.
Flange mount. Installs with a secure, application-specific fit.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Walker 350-34357 Oxygen Sensor Overview
Walker Products 350-34357 is a heated oxygen sensor built as a specific-fit OE replacement for select applications. It is designed to provide the ECU with the feedback needed for proper fuel control and emissions monitoring, including 1988 Toyota Pickup upstream oxygen sensor service.
Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors engineered for application-specific fitment and diagnostic response. The 350-34357 follows that approach with a flange-mount design, 4-wire heated construction, and a female radiused-polygon connector for the listed vehicle application.
- Heated oxygen sensor for upstream placement
- Specific-fit design for the listed Toyota Pickup application
- 4-wire configuration for sensor signal and heater circuit operation
- 18.0 mm thread diameter with flange mount installation
- 20.2 in. wiring harness length and 20-gauge wire
- Female radiused-polygon connector shape
- Overall length: 23.74 in.
Fitment Details
Compatible With 1988 Toyota Pickup, upstream. This application includes Bank 1 Sensor 1 upstream oxygen sensor service and front oxygen sensor coverage noted for various vehicle configurations. If you are replacing a 1988 Toyota Pickup upstream oxygen sensor, Walker 350-34357 is the listed part number for this fitment.
What This Sensor Helps Address
- Check engine light related to oxygen sensor performance
- Rough running caused by incorrect air-fuel feedback
- Increased fuel consumption from a failing upstream sensor
- Higher exhaust emissions from inaccurate ECU input
- Fault codes stored in the ECU for the affected sensor circuit
Installation Notes
Verify the connector shape, thread diameter, mounting style, and harness length before installation. Inspect the sensor wiring, connector, and nearby harness for physical damage, since damaged components can shorten service life and affect signal quality. Confirm the upstream location on the vehicle before replacing the sensor.
Quality Assurance
Walker Products has supplied engine management and fuel system components since 1946 and operates as an ISO 9001/TS 16949 certified manufacturer. The 350-34357 is built as an OE-style replacement for the specified application and is intended to deliver the diagnostic feedback required by the ECU.
| Year | Make | Model | Drive Type | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|---|
| 1988 | Toyota | Pickup | RWD | 2.4L | L4 | GAS | Upstream | Bank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket |
| 1988 | Toyota | Pickup | RWD | 2.4L | L4 | GAS | Upstream | Front oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket |
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