O2 Oxygen Sensor Upstream for Dodge Durango Dakota Charger Magnum (2005-2006) 3.7L

Precision A/F Ratio Management for Dodge PowerTech & Hemi V8 Platforms

Who It’s For: Engineered for Dodge owners running the 3.7L PowerTech V6 or the 5.7L/6.2L Hemi powerplants who are tired of the sluggish throttle response and plummeting fuel economy caused by aging sensors.

The Symptom: The factory upstream oxygen sensors on these Mopar platforms are the eyes of the ECU, constantly monitoring the exhaust gas to adjust fuel trim. Over time, carbon buildup and heat cycles degrade the sensor’s response time, leading to a "lazy" sensor. This results in the engine running rich, causing a noticeable stumble at idle, fouled spark plugs, and a significant loss in passing power on the highway. If you have a Check Engine light for P0131, P0135, or similar codes, your engine is essentially flying blind.

The Engineering Fix: This 4-wire heated sensor kit replaces the critical upstream units located between the engine and the catalytic converter. By utilizing a high-grade zirconium ceramic element, these sensors provide a high-fidelity voltage signal to the PCM, allowing for near-instantaneous adjustments to the air-fuel mixture. The integrated heater ensures the system reaches "closed loop" operation faster, which is vital for maintaining performance during cold starts and protecting your expensive catalytic converters from unburnt fuel saturation.

Why Mechanics Choose This Kit

• Fuel Trim Calibration: Restores the stoichiometric air-fuel ratio, directly improving MPG and recovering lost torque across the 2,500-4,500 RPM range.
• OEM-Spec Signal: Designed to mimic the factory voltage sweep exactly, preventing "false" codes often triggered by universal, non-specific sensors.
• High-Temp Resilience: Built with a 450mm lead and specialized shielding to withstand the extreme under-hood temperatures generated by the 5.7L Hemi engine bay.

Technical Specifications

Compatibility & OEM Reference

Fits the Following Vehicles:

• 2005-2006 Dodge Durango 3.7L V6
• 2005-2006 Dodge Durango 5.7L V8
• 2005-2006 Dodge Dakota 3.7L V6
• 2005-2006 Dodge Magnum 5.7L V8
• 2006 Dodge Charger 5.7L V8
• 2006 Dodge Charger 6.2L V8

Interchange Part Numbers:

234-4593

The Performance Promise

Our team understands that a Mopar isn’t just a commuter car; it’s a performance machine. This sensor kit is a direct plug-and-play solution designed to get your Durango, Dakota, or Charger back to its factory-rated performance levels. Buy with confidence. Backed by real automotive experts and fast shipping.