Delphi ES20023 Oxygen Sensor - Center, Front or Rear

Delphi ES20023 Oxygen Sensor for OE Fitment

The Delphi ES20023 is a heated oxygen sensor built for direct-fit replacement in select Isuzu, Honda, and Acura applications. It uses a 4-wire design with a flat connector and 18 x 1.5 mm thread size, making it a practical choice for restoring accurate exhaust feedback on vehicles such as the Isuzu Rodeo, Honda Passport, and Acura SLX.

Delphi draws on OE heritage and decades of supplier experience, so this oxygen sensor reflects the same engineering focus used in original equipment development. The 405.0 overall length and position-specific fitment help match the factory layout on front, rear, and center locations where specified.

Key Features

• Heated oxygen sensor for faster operating response
• 4-wire configuration with flat connector shape
• 18 x 1.5 mm thread size for direct-thread installation
• 405.0 overall length for listed applications
• Fits center, front, and rear positions depending on vehicle application
• Package contents include the oxygen sensor and instruction sheet
• Cross-references Bosch 13026 and DENSO Auto Parts 234-4012 for the same application

Detailed Description

Delphi ES20023 is an emission control oxygen sensor engineered for vehicles that require a heated, 4-wire sensor with a flat connector and 18 x 1.5 mm thread. It is listed for 1995-2003 Isuzu Rodeo, 2001-2003 Isuzu Rodeo Sport, 1999-2001 Isuzu VehiCROSS, 1996-2000 Honda Passport, 1998-2000 Isuzu Amigo, 1996-2000 Isuzu Hombre, 1996-1999 Acura SLX, 1996-1999 Isuzu Trooper, and 1997-1998 Isuzu Hombre in the specified positions. This part number, ES20023, is built to match the application details needed for accurate exhaust monitoring and replacement service.

What This Sensor Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel feedback from a worn sensor
• Slow sensor response during closed-loop operation
• Emissions test failures tied to sensor degradation
• Rough idle or drivability issues caused by faulty exhaust readings

Installation Notes and Tips

Verify the vehicle position before ordering, since this sensor is listed for front, rear, and center locations depending on the application. Confirm the connector style, thread size, and 405.0 overall length against the original sensor before installation. Use the included instruction sheet and follow proper exhaust service procedures to avoid thread damage or wiring strain.

Quality Assurance

Delphi builds aftermarket parts with OE experience and supplier knowledge developed over many years of original equipment production. That background is reflected in the ES20023 oxygen sensor’s application-specific design and fitment-focused construction.