OE Quality
60-Day Returns

Walker 350-35084 Oxygen Sensor - Upstream Left or Upstream Right
Overview of Walker Oxygen Sensor 350-35084
The Walker 350-35084 oxygen sensor is designed specifically for select Infiniti models, including the M56, Q70, Q70L, QX56, and QX80. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data to the vehicle's engine management system.
- Heated oxygen sensor with 5-wire configuration
- Specific fit for Infiniti M56, Q70, Q70L, QX56, and QX80
- Threaded mounting type with 18.0 mm thread diameter
- 16.26 inches wiring harness length and 19.8 inches overall length
- Radiused polygon male connector for secure connection
- 20 gauge wire for reliable signal transmission
Detailed Product Features and Specifications
This Walker oxygen sensor (part number 350-35084) features a heated sensor type that allows for faster warm-up times and improved sensor responsiveness. The 5-wire design supports both the sensor element and the heating element, ensuring consistent operation under various engine conditions. The sensor is designed with a threaded mounting type and an 18.0 mm thread diameter, making installation straightforward and secure. The wiring harness length of 16.26 inches and overall length of 19.8 inches provide adequate reach for proper placement within the exhaust system. The radiused polygon male connector ensures a precise and stable electrical connection, reducing the risk of signal loss or corrosion. The 20 gauge wire measurement balances durability and flexibility for long-term use.
Walker Products Aftermarket Line
The Walker Products Aftermarket line focuses on providing reliable emission control components that meet or exceed OEM specifications. This oxygen sensor is part of that line, offering a direct replacement solution tailored to specific vehicle applications. By adhering to strict quality standards, Walker Products Aftermarket ensures compatibility and performance for Infiniti vehicles requiring precise emission sensor functionality.
Common Applications and Problem Resolution
- Restores accurate air-fuel ratio readings for engine control units
- Helps resolve check engine light issues related to oxygen sensor faults
- Improves fuel efficiency by providing correct emissions data
- Reduces harmful exhaust emissions by maintaining proper combustion
- Prevents engine performance problems caused by faulty sensor signals
Installation Notes and Tips
When installing the Walker 350-35084 oxygen sensor, ensure the vehicle is compatible with the specific Infiniti models listed. Use appropriate tools to avoid damaging the threaded mounting or connector. Verify the connector's radiused polygon shape and male gender match the vehicle harness for a secure fit. It is recommended to inspect the wiring harness for any damage before installation and to apply anti-seize compound on the threads if necessary to facilitate future removal.
Quality Assurance and Warranty
Walker Products Aftermarket oxygen sensors are manufactured to meet stringent quality standards, ensuring reliable performance and durability. While specific warranty details for part number 350-35084 may vary, Walker typically offers limited warranties covering defects in materials and workmanship. Consult product documentation or the supplier for exact warranty terms related to this oxygen sensor.
| Brand | Walker |
| Part Number | 350-35084 |
| Position | Walker Products Aftermarket, Upstream Left |
| Connector Gender | Male |
| Connector Shape | Radiused Polygon |
| Mounting Type | Threaded |
| Overall Length | 19.8 |
| Sensor Type | Heated |
| Thread Diameter | 18.0 |
| Universal Or Specific Fit | Specific |
| Wire Gauge Measurement | 20 |
| Wire Quantity | 5 |
| Wiring Harness Length | 16.26 |
This part fits 28 vehicles. Search below:
| Year | Make | Model | Submodel | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|---|
| 2015 | INFINITI | Q70 | 5.6 | 5.6L | V8 | GAS | Upstream Right | To 07/2014; Al 07/2014; Upstream; Right; Walker Products Aftermarket |
| 2015 | INFINITI | Q70 | 5.6 | 5.6L | V8 | GAS | Upstream Left | To 07/2014; Al 07/2014; Upstream; Left; Walker Products Aftermarket |
| 2015 | INFINITI | Q70 | 5.6 | 5.6L | V8 | GAS | Upstream Right | To 07/2014; Upstream; Right; Walker Products Aftermarket |
| 2015 | INFINITI | Q70 | 5.6 | 5.6L | V8 | GAS | Upstream Left | To 07/2014; Upstream; Left; Walker Products Aftermarket |
| 2015 | INFINITI | Q70L | 5.6 | 5.6L | V8 | GAS | Upstream Right | To 07/2014; Al 07/2014; Upstream; Right; Walker Products Aftermarket |
| 2015 | INFINITI | Q70L | 5.6 | 5.6L | V8 | GAS | Upstream Left | To 07/2014; Al 07/2014; Upstream; Left; Walker Products Aftermarket |
| 2015 | INFINITI | Q70L | 5.6 | 5.6L | V8 | GAS | Upstream Right | To 07/2014; Upstream; Right; Walker Products Aftermarket |
| 2015 | INFINITI | Q70L | 5.6 | 5.6L | V8 | GAS | Upstream Left | To 07/2014; Upstream; Left; Walker Products Aftermarket |
| 2015 | INFINITI | QX80 | Base | 5.6L | V8 | GAS | Upstream Right | Al 08/2014; Upstream; Right; To 08/2014; Walker Products Aftermarket |
| 2015 | INFINITI | QX80 | Base | 5.6L | V8 | GAS | Upstream Left | Al 08/2014; Upstream; Left; To 08/2014; Walker Products Aftermarket |
| 2015 | INFINITI | QX80 | Base | 5.6L | V8 | GAS | Upstream Right | Upstream; Right; To 08/2014; Walker Products Aftermarket |
| 2015 | INFINITI | QX80 | Base | 5.6L | V8 | GAS | Upstream Left | Upstream; Left; To 08/2014; Walker Products Aftermarket |
| 2014 | INFINITI | Q70 | 5.6 | 5.6L | V8 | GAS | Upstream Right | Install upstream oxygen sensor on the right side.; Walker Products Aftermarket |
| 2014 | INFINITI | Q70 | 5.6 | 5.6L | V8 | GAS | Upstream Left | Install upstream oxygen sensor on the left side.; Walker Products Aftermarket |
| 2014 | INFINITI | QX80 | Base | 5.6L | V8 | GAS | Upstream Right | Install upstream oxygen sensor on the right side.; Walker Products Aftermarket |
| 2014 | INFINITI | QX80 | Base | 5.6L | V8 | GAS | Upstream Left | Install upstream oxygen sensor on the left side.; Walker Products Aftermarket |
| 2013 | INFINITI | M56 | 5.6L | V8 | GAS | Upstream Right | Install upstream oxygen sensor on the right side.; Walker Products Aftermarket | |
| 2013 | INFINITI | M56 | 5.6L | V8 | GAS | Upstream Left | Install upstream oxygen sensor on the left side.; Walker Products Aftermarket | |
| 2013 | INFINITI | QX56 | 5.6L | V8 | GAS | Upstream Right | Install upstream oxygen sensor on the right side.; Walker Products Aftermarket | |
| 2013 | INFINITI | QX56 | 5.6L | V8 | GAS | Upstream Left | Install upstream oxygen sensor on the left side.; Walker Products Aftermarket | |
| 2012 | INFINITI | M56 | 5.6L | V8 | GAS | Upstream Right | Install upstream oxygen sensor on the right side.; Walker Products Aftermarket | |
| 2012 | INFINITI | M56 | 5.6L | V8 | GAS | Upstream Left | Install upstream oxygen sensor on the left side.; Walker Products Aftermarket | |
| 2012 | INFINITI | QX56 | 5.6L | V8 | GAS | Upstream Right | Install upstream oxygen sensor on the right side.; Walker Products Aftermarket | |
| 2012 | INFINITI | QX56 | 5.6L | V8 | GAS | Upstream Left | Install upstream oxygen sensor on the left side.; Walker Products Aftermarket | |
| 2011 | INFINITI | M56 | 5.6L | V8 | GAS | Upstream Right | Install upstream oxygen sensor on the right side.; Walker Products Aftermarket | |
| 2011 | INFINITI | M56 | 5.6L | V8 | GAS | Upstream Left | Install upstream oxygen sensor on the left side.; Walker Products Aftermarket | |
| 2011 | INFINITI | QX56 | 5.6L | V8 | Upstream Right | Install upstream oxygen sensor on the right side.; Walker Products Aftermarket | ||
| 2011 | INFINITI | QX56 | 5.6L | V8 | Upstream Left | Install upstream oxygen sensor on the left side.; 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.