Denso 234-3305 Oxygen Sensor - Upstream Right

OE Style Oxygen Sensor for Nissan and Infiniti

Denso 234-3305 is an OE Style heated oxygen sensor built for specific-fit replacement on select Nissan and INFINITI applications. It is engineered for the upstream right position and uses a threaded mounting design with a male connector and 3-wire configuration for direct replacement service.

For 2001-2003 Nissan Pathfinder and 2002-2003 INFINITI QX4 applications, this Denso oxygen sensor is built to match the original fit and electrical layout. The 18.70-inch wiring harness length supports proper routing, while the heated sensor design helps the engine control system monitor exhaust oxygen content during warm-up and normal operation.

Key Features

• OE Style replacement for specific-fit applications
• Heated oxygen sensor design
• Upstream right position
• 3-wire sensor with male connector
• Threaded mounting type with 0.708-inch thread diameter
• 18.70-inch wiring harness length
• Direct-fit replacement for select Nissan Pathfinder and INFINITI QX4 models

Product Details

Denso 234-3305 is manufactured and tested to OE standards for accurate replacement fitment and consistent sensor performance. The sensor uses Denso’s aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting long service life and stable engine management feedback. This part cross-references Bosch 15343 and NTK 24618 for the same application.

Common Issues This Sensor Can Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel mixture readings
• Reduced fuel economy from a failing upstream sensor
• Slow sensor response during engine warm-up
• Driveability concerns tied to exhaust oxygen monitoring

Installation Notes and Tips

Confirm the upstream right location before ordering, since this part is specific to the listed applications. Match the connector style, wire count, and threaded mounting dimensions to the original sensor on the vehicle. For 2001 Nissan Pathfinder, verify the build date note of from 08/00 before installation. Always inspect the harness routing and exhaust-thread condition during replacement.

Quality Assurance

Denso builds this OE Style oxygen sensor to strict original-equipment standards for exact replacement fit and dependable operation. The design focus on precise dimensions and contamination resistance supports consistent performance in the listed Nissan Pathfinder and INFINITI QX4 applications.