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Walker 350-33034 Oxygen Sensor - Upstream
| Brand | Walker 350-33034 |
|---|---|
| Position | Upstream |
| Connector Gender | Male |
| Connector Shape | Radiused Polygon |
| Mounting Type | Threaded |
| Overall Length | 18.03 |
| Sensor Type | Heated |
| Thread Diameter | 12.0 |
| Universal Or Specific Fit | Specific |
| Wire Gauge Measurement | 20 |
| Wire Quantity | 3 |
| Wiring Harness Length | 14.49 |
| Product line | Walker Products Aftermarket |
| Fits | Nissan · 3 vehicles |
OE replacement. Engineered for specific applications with ECU feedback support.
Heated sensor. Helps maintain accurate oxygen and air-fuel readings.
Threaded mount. Installs with a secure, direct-fit connection.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Walker 350-33034 Oxygen Sensor for Nissan 300ZX
Walker Products 350-33034 is a heated oxygen sensor built as a direct OE-style replacement for specific Nissan applications. It is engineered for the upstream position on 1987-1989 Nissan 300ZX models and provides the ECU with the feedback needed for fuel control and emissions monitoring.
Key Features
- Heated oxygen sensor for faster operating response
- Specific fit for the upstream location
- 3-wire design with 20-gauge wiring
- Threaded mounting with 12.0 mm thread diameter
- Radiused polygon male connector for application-specific fitment
- Wiring harness length: 14.49 in.; overall length: 18.03 in.
Product Details
Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors engineered for OE replacement use. Part number 350-33034 is made for the correct sensor location and connector style, helping maintain the diagnostic feedback the ECU expects. For Nissan 300ZX owners, this upstream oxygen sensor supports accurate air-fuel monitoring on 1987, 1988, and 1989 models.
Walker Products 350-33034 is a practical choice when replacing a worn sensor on a Nissan 300ZX, especially when drivability or emissions-related faults point to the upstream sensor circuit. This part number is also referenced as Walker 350-33034 in catalog listings.
What It Helps Address
- Check engine light related to oxygen sensor performance
- Rough running caused by incorrect air-fuel feedback
- Increased fuel consumption from inaccurate sensor readings
- Higher exhaust emissions from a degraded upstream sensor
- Stored ECU fault codes tied to the oxygen sensor circuit
Installation Notes and Tips
Install this sensor in the upstream position only on the listed Nissan 300ZX applications. Before replacement, inspect the sensor wiring harness and connector for heat damage, corrosion, or broken terminals, since physical damage can shorten sensor life and affect signal quality. Confirm the threaded mounting point and connector style match the vehicle before installation.
Quality Assurance
Walker Products manufactures engine management sensors as OE replacement parts and operates under Automotive ISO9001/TS 16949 quality systems. The Walker Products Aftermarket line is built around application-specific fitment and ECU feedback requirements for modern diagnostic systems.
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 1989 | Nissan | 300ZX | 3.0L | V6 | GAS | Upstream | Install upstream oxygen sensor for optimal performance.; Walker Products Aftermarket |
| 1988 | Nissan | 300ZX | 3.0L | V6 | GAS | Upstream | Install upstream oxygen sensor for optimal performance.; Walker Products Aftermarket |
| 1987 | Nissan | 300ZX | 3.0L | V6 | GAS | Upstream | Install upstream oxygen sensor for optimal performance.; Walker Products Aftermarket |
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