Denso 234-4849 Oxygen Sensor - Downstream or Downstream Right

Overview of Denso OE Style Oxygen Sensor 234-4849

The Denso OE Style Oxygen Sensor 234-4849 is designed specifically for select Audi and Volkswagen models, including the A3 Quattro, Passat, RS4, and S6. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data to the vehicle's engine management system.

• Heated sensor type for faster warm-up and improved efficiency
• Specific fit for Audi and Volkswagen models: A3 Quattro, Passat, RS4, S6
• Threaded mounting type with 0.708 inch thread diameter
• 27.20-inch wiring harness length with 4 wires and male connector
• Part number 234-4849 for exact replacement and compatibility

Details on the Denso OE Style Product Line

The OE Style product line by Denso focuses on delivering parts that meet original equipment specifications. This oxygen sensor is engineered to match the fit, form, and function of the factory-installed sensor, ensuring reliable performance and straightforward installation. The OE Style line is ideal for maintaining vehicle emissions compliance and engine efficiency without modification.

Technical Description and Attributes

This oxygen sensor features a heated sensor element that allows it to reach operating temperature quickly, reducing emissions during cold starts. The 27.20-inch wiring harness provides sufficient length for proper routing in the engine bay. With a 4-wire configuration and a male connector, it integrates seamlessly with the vehicle’s existing wiring harness. The threaded mounting type with a 0.708-inch diameter ensures secure installation in the exhaust system.

Common Applications and Issues Addressed

• Restores accurate air-fuel ratio readings for engine control units
• Helps resolve check engine light triggers related to oxygen sensor faults
• Improves fuel efficiency by providing precise emissions data
• Reduces harmful exhaust emissions by maintaining proper combustion
• Prevents drivability issues such as rough idling or hesitation

Installation Notes and Tips

When installing the Denso 234-4849 oxygen sensor, ensure the engine and exhaust system are cool to avoid burns. Use appropriate tools to avoid damaging the sensor or threads. Verify the connector type matches the vehicle harness before installation. It is recommended to apply anti-seize compound on the threads if not pre-applied to facilitate future removal.

Quality Assurance and Warranty

Denso OE Style oxygen sensors are manufactured to meet strict quality standards and original equipment specifications. While specific warranty details may vary, Denso typically offers coverage against defects in materials and workmanship. Using this sensor helps maintain emissions compliance and engine performance consistent with factory requirements.