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Walker 350-34421 Oxygen Sensor - Upstream
| Brand | Walker 350-34421 |
|---|---|
| Position | Upstream |
| Wiring Harness Length | 6.22 |
| Wire Gauge Measurement | 20 |
| Sensor Type | Heated |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 4 |
| Connector Gender | Female |
| Thread Diameter | 18.00 |
| Overall Length | 9.76 |
| Product line | OE Replacement |
| Fits | BMW · 1 vehicle |
OE Replacement. Specific-fit oxygen sensor for a straightforward replacement.
Heated sensor. Helps the sensor reach operating temperature quickly.
4-wire design. Uses a female connector and 20-gauge wiring.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Walker OE Replacement Oxygen Sensor for BMW 320i
Walker OE Replacement oxygen sensor part number 350-34421 is a direct-fit heated sensor for the 1995 BMW 320i, upstream position. It is built around the listed OE-style dimensions and connector layout to support accurate exhaust feedback in the original sensor location.
Key Features
- Fits 1995 BMW 320i, upstream
- Heated oxygen sensor design for faster operating temperature
- Specific-fit application for direct vehicle matching
- 4-wire configuration with female connector
- 18.00 mm thread diameter for the specified exhaust bung
- Wiring harness length: 6.22
- Overall length: 9.76
- Wire gauge measurement: 20
Detailed Description
Walker OE Replacement 350-34421 is an oxygen sensor for the 1995 BMW 320i in the upstream location. As an OE Replacement line part, it follows the vehicle-specific fitment profile needed for a direct replacement in the exhaust stream, with a heated sensing element, 4-wire layout, and female connector. The 18.00 mm thread diameter and listed harness dimensions help match the original mounting and electrical connection requirements on the BMW 320i.
This part number, 350-34421, is focused on restoring proper upstream exhaust monitoring on the BMW 320i without changing the factory-style sensor location. Walker 350-34421 is a practical choice when replacing a worn or slow-responding oxygen sensor in the 1995 BMW 320i.
What It Helps Address
- Check engine light related to upstream oxygen sensor performance
- Incorrect air-fuel feedback from a degraded sensor
- Rough idle or drivability issues tied to exhaust mixture control
- Failed emissions inspection caused by sensor response problems
- Slow sensor warm-up in the exhaust system
Installation Notes and Tips
Confirm the upstream sensor location before installation and verify the connector style, thread diameter, and harness length against the original part. Because this is a specific-fit oxygen sensor for the 1995 BMW 320i, matching the connector and mounting thread is important for proper installation. Inspect the exhaust bung threads and surrounding wiring before fitting the new sensor.
Quality Assurance
Walker OE Replacement parts are positioned as direct-fit service components for vehicle-specific repair work. This oxygen sensor is built to match the listed application details for the 1995 BMW 320i upstream location, supporting a straightforward OE-style replacement process.
| Year | Make | Model | Transmission | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 1995 | BMW | 320i | Automatic | 2.0L | L6 | Upstream | OE Replacement |
| No rows match your filter. | |||||||