Denso 234-3098 Oxygen Sensor - Upstream, Upstream Left or Upstream Right

Denso OE Style Oxygen Sensor 234-3098

Denso 234-3098 is an OE Style heated oxygen sensor built for direct replacement on select Nissan and INFINITI applications. It is engineered for a specific fit and precise sensor response, helping maintain accurate air-fuel feedback in upstream positions.

Key Features

• Heated oxygen sensor with a threaded mounting design
• Specific fit for direct replacement applications
• 3-wire configuration with male connector
• 35.04 in. wiring harness length
• 0.708 in. thread diameter
• OE Style construction for factory-style fit and function
• Aluminum oxide trap layer helps protect the ceramic element from silicone and lead contamination

Product Details

This Denso oxygen sensor is manufactured and tested to OE standards for accurate replacement performance. The OE Style design supports a first-time fit on applications such as the Nissan Frontier upstream left, Nissan Xterra upstream left, Nissan Maxima upstream, and INFINITI I30 upstream positions. The Denso 234-3098 is also cross-referenced with Bosch 13242 for the same application.

As part of Denso’s OE Style line, this sensor is built to match factory-style dimensions and connector layout for straightforward service on upstream oxygen sensor locations. It is a direct-fit choice for Nissan Maxima oxygen sensor replacement, Frontier upstream left service, and Xterra upstream left repair work.

Common Issues This Sensor Can Help Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel ratio feedback from a worn upstream sensor
• Reduced fuel economy caused by slow sensor response
• Rough idle or drivability concerns tied to sensor contamination
• Failed emissions testing due to a faulty oxygen sensor

Installation Notes and Tips

• Verify the vehicle year, engine application, and sensor position before ordering.
• Confirm upstream left, upstream right, or upstream placement against the vehicle listing.
• Inspect the connector and harness routing before installation.
• Use proper oxygen sensor service tools to avoid damaging the threaded mount.
• Clear diagnostic trouble codes after installation and verify closed-loop operation.

Quality Assurance

Denso manufactures this sensor to strict OE standards and tests each component for replacement accuracy and fit. The design includes an aluminum oxide trap layer to help protect the sensing element from silicone and lead contamination, supporting long-term sensor stability in demanding exhaust conditions.