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Bosch 18197 Oxygen Sensor - Downstream or Upstream
| Brand | Bosch 18197 |
|---|---|
| Position | Upstream and Downstream |
| Heated | Yes |
| Wiring Harness Length | 19.9 |
| Terminal Type | Blade |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 5 |
| Grade Type | Standard replacement |
| Connector Shape | Rectangle |
| Connector Gender | Male |
| Terminal Gender | Male |
| Mounting Bracket Included | No |
| Automotive Color / Finish | Steel |
| Automotive Item Weight (lbs) | 0.220462 lb |
| Hex Size (Oxygen Sensor) | 22 mm |
| Housing Material | Metal |
| Length (Sealing Surface To End Of Connector) | 22.2 in |
| Mounting Type | Threaded |
| Overall Length | 23.4 in |
| Oxygen Sensor Type | Wide band |
| Sensor Type | Wide-band |
| Terminal Quantity | 6 |
| Thread Diameter (Oxygen Sensor) | 18 mm |
| Thread Size | 18 |
| Wiring Harness Included | Yes |
| Product line | OE Quality Oxygen Sensor |
| Fits | Hyundai and Kia · 24 vehicles |
Standard replacement. A direct-fit oxygen sensor for straightforward service.
Wideband design. Delivers precise air-fuel readings across the full lambda range.
Heated sensor. Optimized heater control helps maintain reliable performance.
Cross-references 392102B500 and 3921003130 for the same application. See all 2.
Bosch Wideband Oxygen Sensor for Precise Air-Fuel Control
Bosch Validated Oxygen Sensor 18197 is a heated wideband A/F oxygen sensor built for accurate air-fuel ratio measurement across the full lambda range. It provides the ECU with detailed feedback for cleaner combustion, stable drivability, and consistent emissions control in demanding operating conditions.
Compatible With 2017-2025 Hyundai Elantra, Hyundai Ioniq, Hyundai Accent, Kia Niro, Kia Rio, Kia Soul, and Kia Niro applications where the listed upstream or downstream sensor position matches the vehicle fitment.
Key Features
- Wideband oxygen sensor design for continuous air-fuel ratio monitoring
- Heated sensor with optimized heater control for faster light-off
- Specific-fit replacement with 5-wire harness and 6 terminals
- Threaded mounting with 18 mm thread diameter and 22 mm hex size
- Rectangle male connector with included wiring harness
- Robust metal housing for standard replacement use
- Bosch Validated Oxygen Sensor line backed by OE development experience
Product Details
Bosch 18197 uses a wideband sensor element to deliver more detailed feedback than a traditional switching O2 sensor. That makes it a strong choice for Hyundai Elantra, Hyundai Ioniq, Kia Niro, Kia Rio, and Kia Soul applications that require precise upstream or downstream oxygen sensing. Bosch pioneered the planar pump-cell wideband design used in modern engine management, and this replacement follows that OE-style engineering approach for accurate signal response and dependable thermal performance.
This part cross-references Hyundai/Kia OE numbers 392102B500 and 3921003130 for the same application.
What It Helps Address
- Check engine light related to oxygen sensor performance
- Incorrect air-fuel ratio readings at the ECU
- Rough idle, hesitation, or inconsistent throttle response
- Reduced fuel economy caused by inaccurate sensor feedback
- Elevated emissions from poor mixture control
Installation Notes
Verify the sensor position before ordering, since this part is listed for specific upstream and downstream applications. Confirm the 18 mm thread size, 22 mm hex, rectangle male connector, and 5-wire configuration match the original sensor on the vehicle. The sensor is threaded and includes the wiring harness; use proper oxygen sensor service tools and follow factory torque and routing specifications during installation.
Quality Assurance
Bosch has more than five decades of OE development experience in oxygen sensing and engine management. Bosch Validated Oxygen Sensor 18197 is built to the same OE-proven standards used by vehicle manufacturers for accurate signal output and durable operation.
- Fits 2021-2025 Hyundai Elantra, upstream
- Fits 2017-2022 Hyundai Ioniq, upstream
- Fits 2018-2022 Kia Niro, upstream
- Fits 2018-2019 Hyundai Accent, upstream
- Fits 2018-2019 Kia Rio, upstream
- Fits 2017-2019 Kia Soul, upstream
- Fits 2017 Kia Niro, downstream
| Year | Make | Model | Body Type | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2025 | Hyundai | Elantra | — | 1.6L | L4 | Upstream | OE Quality Oxygen Sensor |
| 2024 | Hyundai | Elantra | — | 1.6L | L4 | Upstream | OE Quality Oxygen Sensor |
| 2023 | Hyundai | Elantra | — | 1.6L | L4 | Upstream | OE Quality Oxygen Sensor |
| 2022 | Hyundai | Elantra | — | 1.6L | L4 | Upstream | OE Quality Oxygen Sensor |
| 2022 | Hyundai | Ioniq | — | 1.6L | L4 | Upstream | OE Quality Oxygen Sensor |
| 2022 | Kia | Niro | — | 1.6L | L4 | Upstream | OE Quality Oxygen Sensor |
| 2021 | Hyundai | Elantra | — | 1.6L | L4 | Upstream | OE Quality Oxygen Sensor |
| 2021 | Hyundai | Ioniq | — | 1.6L | L4 | Upstream | OE Quality Oxygen Sensor |
| 2021 | Kia | Niro | — | 1.6L | L4 | Upstream | OE Quality Oxygen Sensor |
| 2020 | Hyundai | Ioniq | — | 1.6L | L4 | Upstream | OE Quality Oxygen Sensor |
| 2020 | Kia | Niro | — | 1.6L | L4 | Upstream | OE Quality Oxygen Sensor |
| 2019 | Hyundai | Accent | Sedan | 1.6L | L4 | Upstream | Bosch Validated Oxygen Sensor |
| 2019 | Hyundai | Ioniq | — | 1.6L | L4 | Upstream | OE Quality Oxygen Sensor |
| 2019 | Kia | Niro | — | 1.6L | L4 | Upstream | OE Quality Oxygen Sensor |
| 2019 | Kia | Rio | — | 1.6L | L4 | Upstream | Bosch Validated Oxygen Sensor |
| 2019 | Kia | Soul | — | 1.6L | L4 | Upstream | Bosch Validated Oxygen Sensor |
| 2018 | Hyundai | Accent | Sedan | 1.6L | L4 | Upstream | Bosch Validated Oxygen Sensor |
| 2018 | Hyundai | Ioniq | — | 1.6L | L4 | Upstream | OE Quality Oxygen Sensor |
| 2018 | Kia | Niro | — | 1.6L | L4 | Upstream | OE Quality Oxygen Sensor |
| 2018 | Kia | Rio | — | 1.6L | L4 | Upstream | Bosch Validated Oxygen Sensor |
| 2018 | Kia | Soul | — | 1.6L | L4 | Upstream | Bosch Validated Oxygen Sensor |
| 2017 | Hyundai | Ioniq | — | 1.6L | L4 | Upstream | OE Quality Oxygen Sensor |
| 2017 | Kia | Niro | — | 1.6L | L4 | Downstream | OE Quality Oxygen Sensor |
| 2017 | Kia | Soul | — | 1.6L | L4 | Upstream | Bosch Validated Oxygen Sensor |
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