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Denso 234-9144 Air / Fuel Ratio Sensor - Upstream, Upstream Left or Upstream Right
| Brand | Denso 234-9144 |
|---|---|
| Position | Upstream Right |
| Grade Type | Regular |
| Sensor Type | Heated |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 4 |
| Wiring Harness Length | 8.35 |
| Product line | OE Style |
| Fits | Toyota and Lexus · 16 vehicles |
OE style replacement. Precision-built for exact replacement and a first-time fit.
Heated sensor. Delivers fast, consistent air/fuel ratio readings.
Manufactured and tested to strict OE standards.
Cross-references NTK 24828, NTK 24849 and Toyota 894670C050 for the same application. See all 10.
Denso OE Style Air/Fuel Ratio Sensor
Denso 234-9144 is an OE Style heated air/fuel ratio sensor built for specific-fit replacement on select Toyota and Lexus applications. It is precision-built and tested to OE standards for accurate fitment and dependable signal performance.
For drivers searching for a Toyota Tundra upstream right air/fuel ratio sensor or a Lexus GS350, IS250, or IS350 upstream sensor replacement, this Denso part number 234-9144 provides the correct application match.
Key Features
- OE Style replacement for emission control sensor service
- Heated sensor design for faster operating temperature
- Specific fit for direct application matching
- 4-wire configuration
- Wiring harness length: 8.35
- Regular grade type
Detailed Description
Denso 234-9144 is an air/fuel ratio sensor engineered for exact replacement on select Toyota and Lexus vehicles. The OE Style design supports proper sensor placement and connector fit, while the heated construction helps the sensor reach operating temperature quickly for stable feedback to the engine control system. This part cross-references NTK 24828 for the same application.
Compatible With 2016 Toyota Tundra, upstream right; 2012-2015 Toyota Sequoia, upstream right; 2012-2015 Toyota Tundra, upstream right; 2013-2014 Toyota 4Runner, upstream; 2013-2014 Toyota FJ Cruiser, upstream; 2013 Lexus GS350, upstream right; 2013 Lexus IS250, upstream left; and 2013 Lexus IS350, upstream left. If you need a Toyota Tundra upstream right sensor or a Lexus IS250 upstream left replacement, Denso 234-9144 is the direct-fit option.
What It Helps Address
- Check engine light related to air/fuel ratio sensor faults
- Rough idle caused by incorrect sensor feedback
- Fuel trim issues from inaccurate exhaust oxygen readings
- Emissions test failures tied to sensor performance
- Hard starting or drivability concerns linked to a failing upstream sensor
Installation Notes and Tips
Verify the sensor position before ordering, since this part is specific to upstream right, upstream, or upstream left locations depending on the vehicle. Confirm connector style, harness routing, and thread condition before installation. Use the vehicle application data to match the correct Toyota or Lexus fitment, including 2012-2015 Toyota Tundra and 2013 Lexus GS350 applications.
Quality Assurance
Denso manufactures and tests this sensor to OE standards for replacement accuracy and first-time fit. The OE Style product line is focused on direct replacement parts that match original equipment requirements for the listed Toyota and Lexus applications.
| Year | Make | Model | Drive Type | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|
| 2016 | Toyota | Tundra | — | FLEX | Upstream Right | OE; Air / Fuel Ratio Sensor - OE Style |
| 2015 | Toyota | Sequoia | — | FLEX | Upstream Right | OE Style |
| 2015 | Toyota | Tundra | — | FLEX | Upstream Right | OE Style |
| 2014 | Toyota | 4Runner | — | — | Upstream | OE Style |
| 2014 | Toyota | FJ Cruiser | — | — | Upstream | OE Style |
| 2014 | Toyota | Sequoia | — | FLEX | Upstream Right | OE Style |
| 2014 | Toyota | Tundra | — | — | Upstream Right | OE Style |
| 2013 | Lexus | GS350 | RWD | — | Upstream Right | OE Style |
| 2013 | Lexus | IS250 | RWD | — | Upstream Left | OE Style |
| 2013 | Lexus | IS350 | RWD | — | Upstream Left | OE Style |
| 2013 | Toyota | 4Runner | — | — | Upstream | OE Style |
| 2013 | Toyota | FJ Cruiser | — | — | Upstream | OE Style |
| 2013 | Toyota | Sequoia | — | — | Upstream Right | OE Style |
| 2013 | Toyota | Tundra | — | — | Upstream Right | OE Style |
| 2012 | Toyota | Sequoia | — | — | Upstream Right | OE Style |
| 2012 | Toyota | Tundra | — | — | Upstream Right | OE Style |
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