Denso 234-4098 Oxygen Sensor - Downstream

Denso 234-4098 Oxygen Sensor for OE-Style Fitment

Denso 234-4098 is a heated, specific-fit oxygen sensor built for direct replacement in select Honda and Acura applications. It is engineered for the downstream position and uses a 4-wire, threaded design with a male connector for a precise OE-style match.

Key Features

• Heated oxygen sensor for downstream exhaust monitoring
• Specific fit design for direct replacement
• 4-wire configuration with male connector
• Threaded mounting type with 0.708 in. thread diameter
• 15.75 in. wiring harness length
• OE Style Denso construction for accurate fit and function

OE-Style Denso Construction

Denso’s OE Style line is built to match factory fit and performance expectations for the application. The sensor uses precision-built components for first-time fitment and includes Denso’s aluminum oxide trap layer, which helps protect the ceramic element from silicone and lead contamination. That design supports stable engine management, fuel control, and long service life in demanding exhaust conditions. This Denso 234-4098 oxygen sensor is a direct replacement choice for drivers servicing emissions and drivability concerns on Honda CR-V, Honda Civic, and Acura EL models.

This part cross-references Bosch 13363 and NTK 24546 for the same application.

What It Helps Address

• Check engine light related to downstream oxygen sensor faults
• Incorrect air-fuel feedback from a worn sensor
• Reduced fuel economy caused by inaccurate exhaust readings
• Emissions test failures tied to sensor performance
• Rough or inconsistent engine operation from aging sensor output

Installation Notes and Tips

Fits 1997-2001 Honda CR-V, downstream. Fits 1999-2000 Acura EL, downstream. Fits 1999-2000 Honda Civic, downstream. Confirm connector style, thread size, and harness length before installation. Use proper oxygen sensor service tools and inspect the exhaust bung threads for damage or contamination before threading in the new sensor.

Quality Assurance

Denso manufactures and tests this oxygen sensor to OE standards for fit, function, and durability. The OE-style design is intended to provide the correct part and the correct fit for the listed applications.