Delphi ES20220 Oxygen Sensor - Center, Rear, Rear Left or Rear Right

Delphi ES20220 Oxygen Sensor for Nissan and Infiniti

Delphi ES20220 is a heated oxygen sensor built for rear and center exhaust positions on select Nissan and INFINITI vehicles. It uses OE-based engineering from a supplier with decades of original-equipment experience, helping support accurate exhaust feedback on applications such as the Nissan Maxima, Murano, Quest, Altima, Sentra, and INFINITI G35, FX35, FX45, M35, M45, and Q45.

Key Features

• Heated oxygen sensor for faster operating temperature and stable signal response
• 4-wire design with square connector shape
• 18 x 1.5 mm thread size for listed applications
• Overall length: 380.0
• Package contents: oxygen sensor and instruction sheet
• Position-specific coverage for center, rear, rear left, and rear right locations

Detailed Description

The Delphi ES20220 oxygen sensor is engineered for direct replacement in emission control systems that rely on precise exhaust gas monitoring. Its heated design helps the sensor reach operating temperature quickly, which supports consistent feedback to the engine control system during normal driving. This part number, ES20220, is listed for multiple rear and center sensor locations across Nissan and INFINITI platforms, including the Nissan Maxima, Murano, Quest, Altima, and Sentra, as well as INFINITI G35, FX35, FX45, M35, M45, and Q45 applications.

Delphi draws on OE heritage and supplier experience built over many years of original-equipment development. That background is reflected in the sensor’s construction and application coverage, making ES20220 a practical choice when replacing a worn oxygen sensor on compatible Nissan and INFINITI exhaust systems.

This part cross-references Bosch 15523 and DENSO Auto Parts 234-4301 for the same application.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel feedback from a degraded rear or center sensor
• Reduced emissions-system monitoring accuracy
• Rougher engine operation caused by faulty exhaust signal input
• Failed emissions inspection tied to sensor-related faults

Installation Notes and Tips

Verify the exact sensor position on your vehicle before ordering, since ES20220 is listed for center, rear, rear left, and rear right locations depending on application. Confirm the connector shape, wire count, and thread size against the original sensor before installation. For fitment examples, this part fits 2004-2006 Nissan Altima, rear; 2003-2007 Nissan Murano, rear; 2006-2010 INFINITI M45, rear left; and 2003-2006 INFINITI G35, rear left.

Use the vehicle application details to match the correct side and location on Nissan Maxima, Nissan Quest, and other listed models. The included instruction sheet provides installation guidance for the replacement process.

Quality Assurance

Delphi builds this oxygen sensor with OE-focused engineering and application knowledge developed through long-term original-equipment supply experience. That OE heritage supports consistent fitment and function across the listed Nissan and INFINITI applications.