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Denso 234-4519 Oxygen Sensor - Downstream Left or Downstream Right
| Brand | Denso 234-4519 |
|---|---|
| Position | Downstream Right |
| Connector Gender | Male |
| Mounting Type | Threaded |
| Sensor Type | Heated |
| Thread Diameter | 0.708 |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 4 |
| Wiring Harness Length | 43.50 |
| Product line | OE Style |
| Fits | Lexus · 6 vehicles |
OE style replacement. Precision-built for exact replacement and a first-time fit.
Heated sensor. Helps maintain accurate emissions control and engine performance.
Threaded mounting. Installs with a secure, specific-fit connection.
Cross-references Bosch 15759, Delphi ES20420 and NTK 24566 for the same application. See all 6.
Denso OE Style Oxygen Sensor for Lexus GS350
Denso 234-4519 is an OE Style heated oxygen sensor built for precise replacement and consistent signal performance. It is engineered for specific-fit applications on the Lexus GS350, including downstream left and downstream right positions, with the correct connector and harness length for the listed vehicles.
Key Features
- OE Style replacement oxygen sensor for exact-fit service
- Heated sensor design with 4-wire configuration
- Specific fit for listed Lexus GS350 applications
- 43.50 in. wiring harness length for proper routing
- Threaded mounting with 0.708 in. thread diameter
- Male connector for direct replacement installation
Product Details
This Denso oxygen sensor, part number 234-4519, is manufactured and tested to OE standards for accurate replacement in emission control service. The sensor uses Denso’s aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting stable engine management and fuel economy. For Lexus GS350 owners, 234-4519 is listed for 2013 GS350 downstream right and 2007-2011 GS350 downstream left applications.
This part cross-references Bosch 15759 and Delphi ES20420 for the same application.
Common Issues It May Address
- Check engine light related to oxygen sensor performance
- Incorrect air-fuel ratio readings from a worn downstream sensor
- Reduced fuel economy caused by inaccurate exhaust feedback
- Slow sensor response from contamination or age
- Emission test failures tied to faulty sensor output
Installation Notes and Tips
Verify the sensor position before ordering: this listing covers downstream left and downstream right locations only for the specified Lexus GS350 years. Confirm the connector style, wire count, and threaded mounting dimensions against the original part before installation. Use proper oxygen sensor service tools and inspect the harness routing to avoid strain on the lead.
Quality Assurance
Denso manufactures this OE Style oxygen sensor to strict original-equipment standards and tests each component for replacement accuracy and first-time fit. The design focuses on dependable signal performance and long service life in emission control applications.
| Year | Make | Model | Drive Type | Position | Notes |
|---|---|---|---|---|---|
| 2013 | Lexus | GS350 | AWD | Downstream Right | OE Style |
| 2011 | Lexus | GS350 | AWD | Downstream Left | OE Style |
| 2010 | Lexus | GS350 | AWD | Downstream Left | OE Style |
| 2009 | Lexus | GS350 | AWD | Downstream Left | OE Style |
| 2008 | Lexus | GS350 | AWD | Downstream Left | OE Style |
| 2007 | Lexus | GS350 | AWD | Downstream Left | OE Style |
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