Denso 234-4435 Oxygen Sensor - Downstream Right or Upstream Right

Denso OE Style Oxygen Sensor 234-4435

Denso 234-4435 is an OE Style heated oxygen sensor built for specific-fit replacement on select Hyundai and Kia applications. It is engineered to match factory sensor requirements for accurate exhaust feedback, stable engine operation, and consistent fuel control.

The OE Style line is built to Denso’s original-equipment standards, with precision construction for first-time fit and dependable sensor response. Denso also uses an aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting long-term performance in demanding exhaust environments.

Key Features

• Heated oxygen sensor for faster operating response
• Specific-fit design for direct replacement
• 4-wire configuration with male connector
• Threaded mounting type with 0.708 thread diameter
• Wiring harness length: 10.91
• OE Style construction for factory-style fit and function
• Part number: 234-4435

Detailed Description

This Denso oxygen sensor is designed for vehicles that require precise exhaust oxygen monitoring to help the engine control system adjust air-fuel delivery. It is a direct replacement for select 2001 Hyundai XG300, 2002-2005 Hyundai XG350, and 2004-2006 Kia Amanti applications, including upstream right and downstream right positions as listed. If you are replacing a worn sensor on a Hyundai XG350 or Kia Amanti, Denso 234-4435 provides the OE-style fit and connector layout needed for a clean installation.

This part cross-references Bosch 15050 or NTK 25151 for the same application.

What It Helps Address

• Check engine light caused by oxygen sensor failure
• Rough idle or inconsistent air-fuel readings
• Reduced fuel economy from inaccurate exhaust feedback
• Slow sensor response during closed-loop operation
• Corrosion or contamination-related sensor degradation

Installation Notes and Tips

Verify the sensor position before ordering, since this part is listed for upstream right and downstream right locations depending on application. Confirm the connector style, wire count, and threaded mounting dimensions against the original sensor before installation. For best results, inspect the harness routing and exhaust threads during replacement to ensure proper seating and signal integrity.

Quality Assurance

Denso manufactures and tests this OE Style oxygen sensor to strict original-equipment standards. The design focuses on accurate replacement fit, reliable sensor performance, and contamination resistance for long service life. Part number 234-4435 is built to deliver the correct part and fit for the listed Hyundai and Kia applications.