Delphi ES10318 Oxygen Sensor - Rear

Delphi ES10318 Oxygen Sensor Overview

The Delphi ES10318 oxygen sensor is a non-heated, OE-style emission control sensor built with Delphi’s century of original equipment experience. It is a direct-fit option for select Toyota and Geo applications, including Toyota Corolla, Celica, Previa, Paseo, Tercel, and Geo Prizm models listed below.

• Non-heated oxygen sensor for emission control service
• 2-wire design with square connector shape
• 18 x 1.5 mm thread size for the specified applications
• 450.0 overall length
• Position coverage includes front, rear, and upstream applications depending on vehicle
• Package contents: oxygen sensor and instruction sheet

Detailed Product Description

Delphi ES10318 is engineered for vehicles that use a non-heated oxygen sensor configuration. Delphi’s OE heritage is reflected in the sensor design, materials, and application coverage, helping restore accurate exhaust feedback for the engine management system. This part number is commonly searched for Toyota Corolla oxygen sensor replacement, Toyota Celica rear oxygen sensor replacement, and Geo Prizm oxygen sensor service.

This part cross-references Bosch 12201 and DENSO Auto Parts 234-2052 for the same application. Delphi ES10318 also matches multiple OE and aftermarket references, making it a practical choice when replacing a worn sensor on select Toyota and Geo vehicles.

Vehicle Fitment

• Fits 1993-1995 Geo Prizm, without California Emission System
• Fits 1994-1995 Toyota Celica, rear
• Fits 1993-1995 Toyota Corolla, without California Emission System
• Fits 1995 Toyota Paseo, without California Emission System
• Fits 1991-1995 Toyota Previa, rear
• Fits 1992-1994 Toyota Paseo
• Fits 1991-1994 Toyota Tercel

What This Oxygen Sensor Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel feedback to the engine control system
• Rough idle or drivability concerns tied to exhaust sensor input
• Failed emissions inspection caused by a worn sensor
• Delayed or inaccurate sensor response on the listed applications

Installation Notes and Tips

Confirm the sensor position on your vehicle before ordering, since this part is listed for front, rear, and upstream locations depending on application. Verify the connector shape, 2-wire configuration, and 18 x 1.5 mm thread size against the original sensor before installation. Use the application tab or vehicle service information to match the exact fitment for your Toyota or Geo model.

Quality Assurance

Delphi builds aftermarket parts using knowledge gained from supplying original equipment to major automakers for more than 100 years. That OE background supports consistent fitment and application-specific design for the Delphi ES10318 oxygen sensor.