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Denso 234-4930 Oxygen Sensor - Downstream Left
| Brand | Denso 234-4930 |
|---|---|
| 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 | 44.09 |
| Product line | OE Style |
| Fits | Lexus · 19 vehicles |
OE style replacement. Precision-built for exact replacement and a first-time fit.
Heated sensor. Helps support efficient engine performance and fuel economy.
Threaded mounting. Specific-fit design with a 4-wire male connector.
Cross-references NTK 24566, Toyota 8946530A70 and Toyota 8946553240 for the same application. See all 5.
Denso OE Style Oxygen Sensor 234-4930
Denso 234-4930 is an OE-style heated oxygen sensor built for direct replacement on select Lexus applications. It is engineered for exact fitment and reliable signal feedback, with a threaded, specific-fit design that matches the original sensor location.
Key Features
- Heated oxygen sensor for precise exhaust monitoring
- Specific-fit design for direct replacement
- 4-wire configuration with male connector
- Threaded mounting type with 0.708 thread diameter
- 44.09 wiring harness length for OE-style routing
- OE Style construction for factory-like fit and function
OE Style Design Details
The Denso OE Style line is built to match original equipment dimensions and connection points for a first-time fit. This sensor uses Denso’s aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting stable engine management, improved fuel economy, and longer service life. Part number 234-4930 is a direct replacement choice for drivers servicing Lexus exhaust and emissions systems.
This part cross-references NTK 24566 for the same application.
Vehicle Fitment
- Fits 2018 Lexus IS300, downstream left.
- Fits 2018 Lexus IS350, downstream left.
- Fits 2016-2018 Lexus RC300, downstream left.
- Fits 2018 Lexus RC350, downstream left, to 11/2017.
- Fits 2016-2017 Lexus IS300, downstream left.
- Fits 2014-2017 Lexus IS350, downstream left.
- Fits 2015-2017 Lexus RC350, downstream left.
- Fits 2014-2015 Lexus GS350, downstream left.
- Fits 2014-2015 Lexus IS250, downstream left.
Common Repair Uses
- Restores accurate exhaust oxygen readings for Lexus IS300 and IS350 applications
- Addresses check engine light concerns related to downstream sensor performance
- Helps correct poor fuel control caused by a worn or contaminated oxygen sensor
- Supports emissions system operation on RC300, RC350, GS350, and IS250 models
- Replaces a damaged or aging OE-style downstream left sensor
Installation Notes
Confirm the downstream left position before installation and verify connector style, wire count, and thread size against the original sensor. Use proper oxygen sensor service tools to avoid damaging the threaded bung or harness. For Lexus IS300, IS350, RC300, RC350, GS350, and IS250 fitments, match the vehicle build details and emissions configuration before final installation.
Quality Assurance
Denso manufactures and tests this oxygen sensor to OE standards for fit, signal accuracy, and durability. The OE-style design is intended to provide the correct part and the correct fit for the listed Lexus applications.
| Year | Make | Model | Submodel | Drive Type | Position | Notes |
|---|---|---|---|---|---|---|
| 2018 | Lexus | IS300 | F Sport | — | Downstream Left | OE; Oxygen Sensor - OE Style |
| 2018 | Lexus | IS350 | F Sport | — | Downstream Left | OE; Oxygen Sensor - OE Style |
| 2018 | Lexus | RC300 | — | — | Downstream Left | OE Style |
| 2018 | Lexus | RC350 | — | AWD | Downstream Left | To 11/2017; OE Style |
| 2017 | Lexus | IS300 | — | — | Downstream Left | OE Style |
| 2017 | Lexus | IS350 | — | AWD | Downstream Left | OE Style |
| 2017 | Lexus | RC300 | — | — | Downstream Left | OE Style |
| 2017 | Lexus | RC350 | — | AWD | Downstream Left | OE Style |
| 2016 | Lexus | IS300 | — | — | Downstream Left | OE Style |
| 2016 | Lexus | IS350 | — | AWD | Downstream Left | OE Style |
| 2016 | Lexus | RC300 | — | — | Downstream Left | OE Style |
| 2016 | Lexus | RC350 | — | AWD | Downstream Left | OE Style |
| 2015 | Lexus | GS350 | — | AWD | Downstream Left | OE Style |
| 2015 | Lexus | IS250 | — | AWD | Downstream Left | OE Style |
| 2015 | Lexus | IS350 | — | AWD | Downstream Left | OE Style |
| 2015 | Lexus | RC350 | — | AWD | Downstream Left | OE Style |
| 2014 | Lexus | GS350 | — | AWD | Downstream Left | OE Style |
| 2014 | Lexus | IS250 | — | AWD | Downstream Left | OE Style |
| 2014 | Lexus | IS350 | — | AWD | Downstream Left | OE Style |
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