Denso 234-4633 Oxygen Sensor

Denso OE Style Oxygen Sensor 234-4633

Denso 234-4633 is an OE Style heated oxygen sensor built for direct replacement on select Mitsubishi and Dodge applications. It is designed for exact fitment, stable signal performance, and reliable exhaust monitoring on downstream and upstream positions where specified.

Key Features

• Heated oxygen sensor with a 4-wire design for faster operating temperature
• Specific-fit replacement for direct installation on listed vehicles
• Threaded mounting with a 0.708 in. thread diameter
• 23.23 in. wiring harness length for proper routing
• Male connector for OE-style electrical connection
• OE Style construction for factory-like fit and function
• Denso aluminum oxide trap layer helps protect the ceramic element from silicone and lead contamination

Detailed Description

This Denso oxygen sensor is engineered to match OE standards for vehicles that rely on accurate exhaust feedback for fuel control and emissions monitoring. The heated sensor design helps it reach operating temperature quickly, while the specific-fit configuration supports a first-time fit on applications such as Mitsubishi Montero, Mitsubishi Diamante, Mitsubishi Mirage, Mitsubishi 3000GT, Mitsubishi Montero Sport, and Dodge Stealth. The Denso 234-4633 is built for direct replacement where the original sensor is threaded and uses a male connector with a 4-wire harness.

Denso’s OE Style product line focuses on factory-like replacement parts that follow original dimensions and electrical requirements. For this oxygen sensor, that means the right connector style, harness length, and mounting thread for the listed downstream and upstream positions. This part cross-references Bosch 13801 and NTK 23516 for the same application.

What It Helps Address

• Check engine light caused by a failing oxygen sensor
• Incorrect air-fuel ratio readings
• Poor fuel economy from inaccurate exhaust feedback
• Rough idle or drivability issues tied to sensor degradation
• Emissions test failures related to sensor performance

Installation Notes and Tips

Verify the exact year, make, model, and sensor position before ordering. This part is listed for specific upstream and downstream locations, including downstream left, downstream right, upstream left, and upstream right on certain Mitsubishi and Dodge applications. Confirm connector style, thread diameter, and harness length against the original sensor before installation. For best results, inspect the exhaust threads and wiring route during replacement.

Quality Assurance

Denso manufactures and tests this oxygen sensor to OE standards for consistent fit and performance. The sensor includes Denso’s aluminum oxide trap layer, which is intended to help protect the sensing element from contamination and support long service life on the listed applications.