Delphi ES20217 Oxygen Sensor - Rear Left

Delphi ES20217 Oxygen Sensor for Nissan Sentra

The Delphi ES20217 is a heated oxygen sensor built for rear left placement on select Nissan Sentra models. It combines OE-based engineering with the fitment and connector details needed for a direct replacement on 2000-2001 Sentra applications without California Emission System coverage.

Key Features

• Heated oxygen sensor for faster operating temperature and stable signal output
• Rear left position for the listed Nissan Sentra applications
• 4-wire design with square connector shape
• 18 x 1.5 mm thread size for proper exhaust bung fitment
• Overall length: 780.0
• Package contents: oxygen sensor and instruction sheet
• OE heritage backed by Delphi’s long history supplying original equipment to major automakers

Detailed Description

Delphi ES20217 is an emission control oxygen sensor engineered for rear left installation on 2000 Nissan Sentra and 2001 Nissan Sentra models listed below. As a heated sensor, it helps the engine management system monitor exhaust oxygen content after the catalyst reaches operating temperature, supporting accurate fuel control and emissions monitoring. Delphi draws on OE experience and supplier knowledge to build aftermarket parts with the correct electrical and mechanical specifications for the application.

This part cross-references Bosch 15967 and DENSO Auto Parts 234-4776 for the same application. It also aligns with Nissan OE references commonly associated with this fitment, including 226A0-5M011 and 226A0-5M012. Search terms such as Delphi ES20217 oxygen sensor for Nissan Sentra rear left and 2001 Nissan Sentra rear left oxygen sensor help identify the correct application quickly.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel mixture readings from a worn rear sensor
• Reduced catalyst monitoring accuracy
• Emission test failures tied to sensor response issues
• Rougher fuel control caused by degraded exhaust feedback

Installation Notes and Tips

Fits 2000 Nissan Sentra, rear left. Fits 2001 Nissan Sentra, rear left, without California Emission System; except mid year emissions. Confirm the square connector, 4-wire layout, and 18 x 1.5 mm thread size before installation. Inspect the exhaust bung threads and wiring routing, and compare the overall length to the original sensor to ensure proper reach and connector placement. Use the included instruction sheet during installation.

Quality Assurance

Delphi builds this oxygen sensor using OE heritage and application knowledge developed through decades of original equipment supply. That background supports consistent fitment and specification matching for the listed Nissan Sentra applications.