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Walker 350-341020 Oxygen Sensor - Downstream
| Brand | Walker 350-341020 |
|---|---|
| Position | Downstream |
| Heated | Yes |
| Wire Gauge Measurement | 20.00 |
| Sensor Type | Narrow-band |
| Terminal Type | Blade |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 4 |
| Grade Type | Standard replacement |
| Connector Shape | Oblong |
| Terminal Gender | Male |
| Wrench Size | 22 |
| Thread Size | M18 - 1.5 |
| Overall Length | 433 |
| Mounting Type | Threaded |
| Product line | OE Replacement |
| Fits | Acura and Honda · 8 vehicles |
OE Replacement. Application-specific oxygen sensor built for direct-fit service.
Heated narrow-band. Provides responsive signal output for emissions system monitoring.
Threaded fitment. M18 x 1.5 mounting with blade terminals and oblong connector.
OE Replacement Oxygen Sensor
Walker oxygen sensor 350-341020 is a specific-fit, heated narrow-band sensor built for downstream applications. It is engineered to provide the ECU with the diagnostic feedback needed to monitor emissions system performance on select Acura and Honda models.
- Standard replacement oxygen sensor for specific applications
- Heated narrow-band design for responsive signal output
- 4-wire configuration with blade terminals and oblong connector
- Threaded M18 x 1.5 mounting with 22 mm wrench size
- Fits 2018-2021 Honda Accord, downstream; 2019-2021 Acura RDX, downstream; 2021 Acura TLX, downstream
Fitment Details
Compatible With 2018-2021 Honda Accord, downstream, B1S2 OE replacement. Compatible With 2019-2021 Acura RDX, downstream, B1S2 OE replacement. Compatible With 2021 Acura TLX, downstream, OE replacement. Walker 350-341020 is a direct-fit oxygen sensor for these applications, and the part number 350-341020 should be matched to the exact vehicle listing before ordering.
What It Helps Address
- Fault codes related to a failing downstream oxygen sensor
- Rough engine operation caused by incorrect air-fuel feedback
- Higher fuel consumption from inaccurate sensor readings
- Increased exhaust emissions from degraded sensor performance
- Malfunction indicator light triggered by sensor or circuit issues
Installation Notes
Confirm the connector shape, thread size, wire count, and downstream position before installation. Inspect the sensor wiring harness and connector for damage, since physical wear can shorten service life. The threaded design supports direct replacement in the listed applications, and the part number 350-341020 should be verified against the vehicle catalog for exact fitment.
Quality Assurance
Walker Products manufactures engine management and oxygen sensors as OE replacement parts and operates under ISO 9001/TS 16949 quality systems. The OE Replacement line focuses on application-specific fitment and ECU feedback requirements for modern emissions systems.
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2021 | Acura | RDX | 2.0L | L4 | — | Downstream | B1S2; OE Replacement |
| 2021 | Acura | TLX | 2.0L | L4 | — | Downstream | OE Replacement |
| 2021 | Honda | Accord | 2.0L | L4 | GAS | Downstream | B1S2; OE Replacement |
| 2020 | Acura | RDX | 2.0L | L4 | — | Downstream | B1S2; OE Replacement |
| 2020 | Honda | Accord | 2.0L | L4 | — | Downstream | B1S2; OE Replacement |
| 2019 | Acura | RDX | 2.0L | L4 | — | Downstream | B1S2; OE Replacement |
| 2019 | Honda | Accord | 2.0L | L4 | — | Downstream | B1S2; OE Replacement |
| 2018 | Honda | Accord | 2.0L | L4 | — | Downstream | B1S2; OE Replacement |
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