Denso 234-4829 Oxygen Sensor - Downstream, Downstream Left or Upstream

Overview of the Denso OE Style Oxygen Sensor 234-4829

The Denso OE Style Oxygen Sensor 234-4829 is designed specifically for select Audi, Bentley, and Volkswagen models. This heated oxygen sensor features a threaded mounting type and a 50.28-inch wiring harness, ensuring precise fitment and reliable performance in emission control systems.

• Heated oxygen sensor for accurate emissions monitoring
• Specific fit for Audi, Bentley, and Volkswagen vehicles
• Threaded mounting type with 0.708-inch thread diameter
• 50.28-inch wiring harness length with 4 wires
• Male connector for secure electrical connection

Detailed Product Description

The Denso 234-4829 oxygen sensor is engineered to meet the exact specifications of the original equipment for improved compatibility and performance. Its heated sensor type allows for faster warm-up times, which helps the engine control unit (ECU) maintain optimal air-fuel mixture and reduce emissions. The 4-wire design supports both the sensor signal and heater circuit, while the male connector ensures a secure and reliable electrical connection. With a 0.708-inch threaded diameter and threaded mounting type, installation is straightforward and compatible with the designated vehicle models.

This sensor is part of Denso's OE Style product line, which focuses on delivering parts that closely replicate the original equipment in form, fit, and function. The OE Style line is ideal for customers seeking direct replacements that maintain factory performance standards without modification.

Compatible Vehicles and Applications

• Audi A3, A3 Quattro, A4, A4 Quattro, R8, TT, TT Quattro, TTS Quattro
• Bentley Continental
• Volkswagen Beetle, CC, Eos, Golf, Golf R, GTI, Jetta, Passat, Touareg

Common Issues Addressed by This Oxygen Sensor

• Check engine light triggered by faulty oxygen sensor readings
• Poor fuel economy due to incorrect air-fuel mixture
• Increased emissions and failed emissions tests
• Engine performance problems such as rough idling or hesitation
• Heater circuit failure causing delayed sensor response

Installation Notes and Tips

• Ensure the vehicle is cool before removing the old sensor to avoid burns
• Use appropriate oxygen sensor socket or wrench for removal and installation
• Apply anti-seize compound to the sensor threads if not pre-coated
• Verify connector polarity and secure connection to prevent electrical issues
• Clear any diagnostic trouble codes after installation to reset the ECU

Quality Assurance and Warranty

Denso OE Style oxygen sensors are manufactured to meet strict quality standards and are tested for durability and performance. While specific warranty details may vary, Denso typically offers coverage against defects in materials and workmanship. Using a genuine OE Style sensor like the 234-4829 helps maintain vehicle emission compliance and engine efficiency.