Denso 234-4418 Oxygen Sensor - Upstream

Denso OE Style Oxygen Sensor 234-4418

Denso 234-4418 is an OE Style heated oxygen sensor built for exact replacement and first-time fit. It is engineered for the upstream position on select 2007 Chrysler 300, Dodge Charger, and Dodge Magnum applications, with fitment that matches the original sensor location and connector style.

Denso’s OE Style line focuses on direct-fit replacement parts for Chrysler 300 and Dodge Charger owners who need accurate sensor response, stable engine management, and proper emissions system operation. The 234-4418 part number is also listed as a direct replacement reference for the same application.

Key Features

• Heated oxygen sensor for upstream placement
• Specific-fit design with a threaded mounting type
• 4-wire configuration with female connector
• Wiring harness length: 12.28 in.
• Thread diameter: 0.708 in.
• OE Style replacement built to match original fit and function
• Uses Denso’s aluminum oxide trap layer to help protect the sensing element from silicone and lead contamination

Product Details

Denso 234-4418 is a direct-fit emission control sensor for vehicles that require an upstream heated oxygen sensor. It is designed for 2007 Chrysler 300, 2007 Dodge Charger, and 2007 Dodge Magnum applications, including the Chrysler 300 and Dodge Charger builds noted in the fitment data. The OE Style construction supports accurate installation alignment, while the heated design helps the engine control system reach operating temperature efficiently. This part cross-references Chrysler 68021056AA and NTK 23030 for the same application.

Common Issues This Sensor Can Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel mixture readings from a worn upstream sensor
• Reduced fuel economy caused by slow or inaccurate sensor response
• Emissions test failures tied to sensor degradation
• Driveability concerns from contaminated or aging sensor elements

Installation Notes and Tips

Verify the upstream sensor location before ordering and confirm the connector, wire count, and thread size match the original part. This sensor uses a threaded mounting design and a female connector, so the vehicle harness and exhaust bung must match the OE configuration. For best results, inspect the exhaust threads and wiring routing before installation on 2007 Chrysler 300, Dodge Charger, or Dodge Magnum models.

Quality Assurance

Denso manufactures and tests this oxygen sensor to OE standards for direct replacement use. The sensor’s protective trap layer is part of Denso’s OE Style design approach, helping support long-term sensor performance in demanding exhaust conditions.