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NTK 21074 Oxygen Sensor - Downstream Left or Downstream Right
| Brand | NTK 21074 |
|---|---|
| Position | Downstream Right and Downstream Left |
| Wiring Harness Length | 10.25 |
| Sensor Type | Heated |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 4 |
| Thread Diameter | 18.000 |
| Mounting Type | Threaded |
| Product line | Direct Fit Oxygen Sensor |
| Fits | Chevrolet · 6 vehicles |
Direct-fit design. Built for specific applications with OE-style fit and form.
Heated sensor. Four-wire construction supports stable oxygen sensor operation.
OE-tested quality. Extensively tested during manufacturing to meet or exceed OE specifications.
Cross-references DENSO Auto Parts 234-4974 and 12655678 for the same application. See all 2.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Direct-Fit Oxygen Sensor
NTK 21074 is a direct-fit heated oxygen sensor built for specific applications and threaded installation. It is engineered for precise fit, stable signal performance, and OE-level form and function in emission control service.
- Direct-fit design for specific applications
- Heated oxygen sensor with 4-wire construction
- Threaded mounting type with 18.000 thread diameter
- 10.25 wiring harness length for application-specific routing
- Part number 21074 for easy identification
Fitment and Application
Fits 2014-2016 Chevrolet Corvette, downstream right. Fits 2014-2016 Chevrolet Corvette, downstream left. This part cross-references DENSO Auto Parts (e.g., 234-4974) for the same application.
For Chevrolet Corvette oxygen sensor replacement, this NTK 21074 unit matches the listed downstream positions and is intended for direct-fit service. It is a practical choice when replacing a worn sensor that affects emissions monitoring, fuel control feedback, or diagnostic trouble codes tied to the oxygen sensor circuit.
Common Issues It May Address
- Check engine light related to oxygen sensor performance
- Incorrect air-fuel ratio feedback to the engine control system
- Slow or unstable sensor response during closed-loop operation
- Emissions test failures caused by a faulty sensor
- Diagnostic codes associated with downstream oxygen sensor faults
Installation Notes and Quality
Use the threaded mounting style and harness length to confirm application match before installation. Verify connector routing and sensor location against the vehicle service information for the Chevrolet Corvette. NTK states these oxygen sensors are extensively tested during manufacturing and built to meet or exceed OE specifications.
NTK is part of the NGK family of products and is recognized as a major OE oxygen sensor supplier. The Direct Fit Oxygen Sensor line is focused on application coverage, OE-style fit, and consistent sensor performance. Part number 21074 is supported by NTK's manufacturing and testing standards for reliable emission control service.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2016 | Chevrolet | Corvette | 6.2L | V8 | Downstream Right | Replacement oxygen sensor for B2S2 location.; Direct Fit Oxygen Sensor |
| 2016 | Chevrolet | Corvette | 6.2L | V8 | Downstream Left | B1S2 oxygen sensor meets OEM standards.; Direct Fit Oxygen Sensor |
| 2015 | Chevrolet | Corvette | 6.2L | V8 | Downstream Right | Replacement oxygen sensor for B2S2 location.; Direct Fit Oxygen Sensor |
| 2015 | Chevrolet | Corvette | 6.2L | V8 | Downstream Left | B1S2 oxygen sensor meets OEM standards.; Direct Fit Oxygen Sensor |
| 2014 | Chevrolet | Corvette | 6.2L | V8 | Downstream Right | Replacement oxygen sensor for B2S2 location.; Direct Fit Oxygen Sensor |
| 2014 | Chevrolet | Corvette | 6.2L | V8 | Downstream Left | B1S2 oxygen sensor meets OEM standards.; Direct Fit Oxygen Sensor |
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