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Denso 234-4773 Oxygen Sensor - Downstream
| Brand | Denso 234-4773 |
|---|---|
| Position | Downstream |
| Wiring Harness Length | 10.55 |
| Sensor Type | Heated |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 4 |
| Connector Gender | Female |
| Thread Diameter | 0.708 |
| Mounting Type | Threaded |
| Product line | OE Style |
| Fits | Chevrolet · 3 vehicles |
OE style replacement. Precision-built for exact replacement and a first-time fit.
Heated sensor. Helps support faster operation and consistent performance.
Threaded mounting. Female connector and specific fit for straightforward installation.
Cross-references GMC 25180901, NTK 21559 and Walker Products 250-24703 for the same application. See all 4.
Denso 234-4773 Oxygen Sensor for OE-Style Replacement
Denso 234-4773 is a specific-fit heated oxygen sensor built for direct replacement in emission control applications. It is engineered for the downstream position on 2013-2015 Chevrolet Spark models and uses a threaded mounting design with a 4-wire female connector for OE-style serviceability.
Key Features
- Specific-fit heated oxygen sensor for direct replacement
- Threaded mounting type with 0.708 thread diameter
- 4-wire design with female connector
- 10.55 wiring harness length
- OE Style construction for exact replacement fit
- Fits 2013-2015 Chevrolet Spark, downstream
OE Style Construction
Denso’s OE Style line is built to match original equipment fit and function for emission control service. The 234-4773 oxygen sensor is precision built for first-time fitment and uses Denso’s aluminum oxide trap layer to help protect the ceramic sensing element from silicone and lead contamination. That design supports stable sensor operation, consistent engine management input, and long service life in downstream exhaust applications. This part cross-references NTK 21559 for the same application.
What This Oxygen Sensor Helps Address
- Check engine light related to downstream oxygen sensor performance
- Incorrect exhaust gas feedback to the engine control system
- Reduced fuel efficiency caused by a worn sensor
- Emissions test failures tied to sensor response issues
- Rough or inconsistent engine operation from faulty sensor data
Installation Notes and Fitment
Fits 2013-2015 Chevrolet Spark, downstream. Confirm connector style, thread diameter, and harness length before installation to match the original sensor location and wiring path. The threaded mounting design supports direct replacement in the exhaust stream, and the specific-fit configuration is intended for OE-style service on the listed Chevrolet Spark applications. The part number 234-4773 is also referenced in OE-style replacement searches for the Chevrolet Spark downstream oxygen sensor.
Quality Assurance
Denso manufactures and tests this oxygen sensor to OE standards for replacement accuracy and consistent performance. The 234-4773 is part of Denso’s OE Style product line, which focuses on exact-fit components for emission control repair.
| Year | Make | Model | Transmission | Position | Notes |
|---|---|---|---|---|---|
| 2015 | Chevrolet | Spark | Automatic CVT | Downstream | OE Style |
| 2014 | Chevrolet | Spark | Automatic CVT | Downstream | OE Style |
| 2013 | Chevrolet | Spark | Automatic | Downstream | OE Style |
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