Denso 234-4114 Oxygen Sensor - Downstream

Denso OE Style Oxygen Sensor 234-4114

Denso 234-4114 is an OE-style heated oxygen sensor built for direct replacement on select Mitsubishi applications. It is engineered for downstream use on Mitsubishi Lancer, Outlander, Outlander Sport, and RVR models, with a specific-fit design that supports accurate installation and reliable exhaust monitoring.

Denso’s OE Style line focuses on exact replacement fitment and factory-level sensor construction. This oxygen sensor uses a threaded mounting design, a female connector, 4 wires, and a 35.51-inch wiring harness length for the listed Mitsubishi downstream applications.

Key Features

• OE Style replacement oxygen sensor for downstream placement
• Heated sensor design for faster operating readiness
• Specific fit for listed Mitsubishi applications
• 4-wire configuration with female connector
• Threaded mounting type with 0.708-inch thread diameter
• 35.51-inch wiring harness length
• Built to OE standards for exact replacement fit

Product Details

This Denso oxygen sensor is designed for Mitsubishi vehicles that require a downstream sensor, including 2008-2015 Mitsubishi Lancer, 2008-2013 Mitsubishi Outlander, 2011-2013 Mitsubishi Outlander Sport, and 2011-2015 Mitsubishi RVR. It also covers later Mitsubishi Outlander Sport and RVR applications through 2021, depending on model year and notes. If you are replacing a downstream oxygen sensor on a Mitsubishi Lancer, Outlander Sport, or RVR, part number 234-4114 provides an OE-style service replacement.

The OE Style product line is built around factory-like fit and sensor performance. Denso uses precision manufacturing and testing to help ensure the sensor matches the original application requirements, while the aluminum oxide trap layer helps protect the ceramic element from silicone and lead contamination for stable engine management and fuel control.

This part cross-references Bosch 18074 and NTK 25693 for the same application.

Common Reasons to Replace

• Check engine light related to oxygen sensor performance
• Slow or inaccurate downstream exhaust readings
• Reduced fuel economy caused by faulty sensor feedback
• Emission test failure tied to sensor response issues
• Corrosion, wiring damage, or connector wear at the sensor

Installation Notes

Verify the vehicle’s year, model, and downstream sensor location before ordering. This sensor uses a threaded mount and a specific-fit connector, so the original application should be matched carefully to the listed Mitsubishi fitment. Confirm the harness length, wire count, and connector style against the removed part before installation.

For best results, inspect the exhaust threads and connector condition during replacement. Denso 234-4114 is intended for the listed downstream Mitsubishi applications, including Mitsubishi Lancer, Outlander Sport, and RVR models shown in the fitment data.

Quality Assurance

Denso manufactures and tests this OE Style oxygen sensor to OE-level standards for replacement accuracy and consistent performance. The design emphasizes first-time fitment and long service life through sensor protection features and precision-built construction.