/live/media/O2/O2_35034270_Fro.jpg)
Will it fit your vehicle?
Confirm before you buy. Free return shipping if it doesn't fit.
Walker 350-34270 Oxygen Sensor - Upstream
| Brand | Walker 350-34270 |
|---|---|
| Position | Upstream |
| Connector Gender | Male |
| Connector Shape | Radiused Polygon |
| Mounting Type | Threaded |
| Overall Length | 25.51 |
| Sensor Type | Heated |
| Thread Diameter | 18.0 |
| Universal Or Specific Fit | Specific |
| Wire Gauge Measurement | 20 |
| Wire Quantity | 4 |
| Wiring Harness Length | 21.97 |
| Product line | Walker Products Aftermarket |
| Fits | Mercedes-Benz · 1 vehicle |
OE replacement. Engineered as an original-equipment-style oxygen sensor.
Heated sensor. Provides the diagnostic feedback the ECU requires.
Threaded mount. Installs with a secure, threaded connection.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Walker 350-34270 Oxygen Sensor for Mercedes-Benz E320
Walker Products 350-34270 is a heated oxygen sensor built as a specific-fit OE replacement for the upstream position on the 1996 Mercedes-Benz E320. It is engineered to deliver the ECU feedback needed for proper fuel control, emissions monitoring, and fault detection.
Key Features
- Specific-fit oxygen sensor for the upstream location
- Heated sensor design for faster operating response
- 4-wire configuration with 20-gauge wiring
- Threaded mounting with 18.0 mm thread diameter
- Radiused polygon male connector for vehicle-specific connection
- Wiring harness length: 21.97 in.; overall length: 25.51 in.
Product Details
Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors engineered as OE-style replacements for worldwide vehicle applications. Part number 350-34270 is built for the 1996 Mercedes-Benz E320 upstream oxygen sensor location, where accurate exhaust feedback is critical for air-fuel ratio control and emissions system performance. Walker Products 350-34270 is designed to match the application, fitment position, and diagnostic requirements expected by the ECU.
This part cross-references no listed alternate part numbers in the provided data.
What This Sensor Helps Address
- Check engine light related to oxygen sensor performance
- Poor engine operation caused by incorrect exhaust feedback
- Increased fuel consumption from inaccurate air-fuel control
- Higher exhaust emissions from a failing upstream sensor
- Stored ECU fault codes tied to the sensor circuit or related systems
Installation Notes and Tips
For the 1996 Mercedes-Benz E320, install this sensor in the upstream position only. Before replacement, inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion, since physical damage can shorten sensor life and affect signal quality. Confirm the threaded mounting location and connector style match the vehicle before installation.
Quality Assurance
Walker Products has been manufacturing engine management and fuel system components since 1946 and operates as an Automotive ISO 9001/TS 16949 certified company. The 350-34270 is produced as a vehicle-specific replacement sensor for consistent ECU feedback and application-level fitment.
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 1996 | Mercedes-Benz | E320 | 3.2L | L6 | GAS | Upstream | Install upstream oxygen sensor for optimal performance.; Walker Products Aftermarket |
| No rows match your filter. | |||||||