Delphi ES20048 Oxygen Sensor - Rear

Delphi ES20048 Rear Oxygen Sensor

The Delphi ES20048 is a heated rear oxygen sensor built for precise exhaust monitoring on select Chrysler, Dodge, and Plymouth minivans and compact cars. With OE heritage behind the design, it brings the sensor type, connector style, and thread specification needed for a direct-fit replacement on listed applications.

Key Features

• Heated oxygen sensor for rear position applications
• 4-wire design for the listed vehicle fitments
• Round connector shape
• 18 x 1.5 mm thread size
• Overall length: 305.0
• Package contents: oxygen sensor and instruction sheet
• Delphi ES20048 replacement part for select rear sensor locations

Detailed Description

Delphi ES20048 is engineered as a rear oxygen sensor for vehicles that require a heated, 4-wire sensor with a round connector and 18 x 1.5 mm thread. Delphi draws on more than a century of OE experience and supplier knowledge, and that background is reflected in the fit, form, and function of this aftermarket sensor. This part cross-references Bosch 13149 for the same application. Compatible With 1996-2000 Chrysler Town & Country, rear; 1996-2000 Chrysler Voyager, rear; 1996-2000 Chrysler Grand Voyager, rear; 1996-2000 Dodge Caravan, rear; 1996-2000 Dodge Grand Caravan, rear; 1996-2000 Plymouth Voyager, rear; 1996-2000 Plymouth Grand Voyager, rear; and 1999 Plymouth Neon, rear, depending on emission package notes listed below.

What It Helps Address

• Check engine light related to rear oxygen sensor performance
• Incorrect exhaust feedback from a worn or slow-responding sensor
• Fuel trim issues caused by degraded sensor output
• Emission test failures tied to rear sensor faults
• Connector or thread mismatch when replacing the original rear sensor

Installation Notes and Tips

• Verify rear position fitment and emission package notes before ordering, especially TLEV exclusions.
• Confirm the connector shape, wire count, and thread size match the original sensor.
• Inspect the exhaust bung threads before installation to ensure proper seating.
• Use the included instruction sheet during installation and follow vehicle-specific service procedures.
• Clear diagnostic trouble codes after installation and verify sensor operation with a scan tool.

Quality Assurance

Delphi builds this sensor using OE-based engineering knowledge developed through long-term supplier experience with major automakers. The ES20048 is specified for the listed rear applications and is backed by Delphi’s aftermarket manufacturing standards.