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Denso 234-4378 Oxygen Sensor - Upstream
| Brand | Denso 234-4378 |
|---|---|
| Position | Upstream |
| Wiring Harness Length | 17.32 |
| 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 | Mitsubishi · 4 vehicles |
OE style replacement. Precision-built for exact replacement and a first-time fit.
Heated sensor. Helps support faster operation and consistent emissions control.
Threaded mounting. Specific-fit design with a female connector and 4-wire harness.
Cross-references ACDelco 213-3043, Bosch 13785 and Bosch 15608 for the same application. See all 9.
Denso OE Style Oxygen Sensor 234-4378
Denso 234-4378 is a specific-fit heated oxygen sensor built for direct replacement on select Mitsubishi applications. It is engineered to match OE-style dimensions and connector layout for a first-time fit on the vehicle.
For drivers searching for a 2003-2006 Mitsubishi Outlander upstream oxygen sensor, this Denso OE Style part delivers the correct fitment and sensor configuration for the listed applications. The 234-4378 is designed for precise signal monitoring and dependable exhaust feedback in the engine management system.
Key Features
- Heated oxygen sensor for faster operating response
- Specific-fit design for direct replacement
- 4-wire configuration with female connector
- Threaded mounting type with 0.708 in. thread diameter
- 17.32 in. wiring harness length
- OE-style construction for accurate replacement fit
OE Style Construction
Denso’s OE Style line focuses on exact replacement dimensions and factory-style fitment. This oxygen sensor uses precision-built components to match the original application, helping maintain proper exhaust monitoring on the Mitsubishi Outlander. Denso also incorporates an aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting long service life and stable engine performance.
This part cross-references NTK 24650 and Standard Ignition SG1468 for the same application.
What This Sensor Helps Address
- Check engine light related to oxygen sensor performance
- Incorrect air-fuel feedback from a worn upstream sensor
- Reduced fuel economy caused by slow sensor response
- Rough engine operation tied to exhaust mixture control
- Failed emissions testing due to sensor degradation
Installation Notes
Fits 2003-2005 Mitsubishi Outlander, upstream. Fits 2006 Mitsubishi Outlander, upstream, to 03/03/06; OE Style. Confirm the connector, thread size, and harness length before installation. Use proper oxygen sensor service tools and follow the vehicle service procedure for removal and torque specifications.
Quality Assurance
Denso manufactures and tests this oxygen sensor to OE standards for exact replacement performance. The 234-4378 is built for the listed Mitsubishi Outlander applications and is backed by Denso’s OE-style engineering approach.
| Year | Make | Model | Drive Type | Position | Notes |
|---|---|---|---|---|---|
| 2006 | Mitsubishi | Outlander | AWD | Upstream | To 03/03/06; OE Style |
| 2005 | Mitsubishi | Outlander | AWD | Upstream | OE Style |
| 2004 | Mitsubishi | Outlander | AWD | Upstream | OE Style |
| 2003 | Mitsubishi | Outlander | AWD | Upstream | OE Style |
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