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Denso 234-4416 Oxygen Sensor - Downstream Left
| Brand | Denso 234-4416 |
|---|---|
| Position | Downstream Left |
| Connector Gender | Male |
| Mounting Type | Threaded |
| Sensor Type | Heated |
| Thread Diameter | 0.708 |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 4 |
| Wiring Harness Length | 10.04 |
| Product line | OE Style |
| Fits | Toyota and Lexus · 10 vehicles |
OE style replacement. Precision-built for exact replacement and a first-time fit.
Heated sensor. Helps support faster operation and consistent performance.
Aluminum oxide trap layer. Protects the ceramic element for improved longevity.
Cross-references Delphi ES20213, NTK 24677 and Toyota 894650E040 for the same application. See all 6.
Denso OE Style Oxygen Sensor 234-4416
Denso 234-4416 is an OE Style heated oxygen sensor built for exact replacement and first-time fit. It is engineered for downstream left applications on select Toyota Sienna and Lexus RX350 models, with the correct connector, thread size, and harness length for a direct-fit repair.
The Denso OE Style line focuses on factory-style fit and function for emissions control service. This oxygen sensor uses a heated design, a 4-wire layout, a male connector, and a threaded mounting type to match the original application. Denso also uses an aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting stable engine performance and fuel efficiency over time.
- Heated oxygen sensor for emissions control service
- Specific-fit design for direct replacement
- 4-wire configuration with male connector
- Threaded mounting with 0.708 in. thread diameter
- 10.04 in. wiring harness length
- OE Style construction for factory-style fit and function
Fitment Details
- Fits 2015 Toyota Sienna, downstream left, to 09/2014; OE Style
- Fits 2014 Lexus RX350, downstream left, exc. Japan built vehicle (to 03/2014); OE Style
- Fits 2011-2014 Toyota Sienna, downstream left; OE Style
- Fits 2010-2013 Lexus RX350, downstream left, exc. Japan built vehicle; OE Style
This part cross-references Toyota 894650E040 and NTK 24677 for the same application.
Common Repair Symptoms
- Check engine light related to oxygen sensor performance
- Incorrect air-fuel ratio readings
- Reduced fuel economy from a failing downstream sensor
- Emissions test failure caused by sensor response issues
- Rougher engine operation tied to contaminated or aging sensor elements
Installation Notes
Verify the downstream left location, connector style, and vehicle build date before ordering. This Denso 234-4416 oxygen sensor is a specific-fit part, so matching the original harness length, thread diameter, and mounting style is important for proper installation on Toyota Sienna and Lexus RX350 applications.
Quality Assurance
Denso manufactures and tests these oxygen sensors to OE standards for replacement accuracy and consistent performance. The OE Style design is intended to deliver the correct part and fit for the listed applications.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2015 | Toyota | Sienna | Downstream Left | To 09/2014; OE Style |
| 2014 | Lexus | RX350 | Downstream Left | Exc.Japan Built Vehicle (To 03/2014); OE Style |
| 2014 | Toyota | Sienna | Downstream Left | OE Style |
| 2013 | Lexus | RX350 | Downstream Left | Exc.Japan Built Vehicle; OE Style |
| 2013 | Toyota | Sienna | Downstream Left | OE Style |
| 2012 | Lexus | RX350 | Downstream Left | Exc.Japan Built Vehicle; OE Style |
| 2012 | Toyota | Sienna | Downstream Left | OE Style |
| 2011 | Lexus | RX350 | Downstream Left | Exc.Japan Built Vehicle; OE Style |
| 2011 | Toyota | Sienna | Downstream Left | OE Style |
| 2010 | Lexus | RX350 | Downstream Left | Exc.Japan Built Vehicle; OE Style |
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