Delphi ES10659 Oxygen Sensor - Front or Rear

Delphi ES10659 Oxygen Sensor Overview

The Delphi ES10659 is a heated oxygen sensor built for precise exhaust monitoring and OE-style replacement performance. Backed by Delphi’s century of original equipment experience, it brings factory-informed engineering to applications such as the Hyundai Accent, Elantra, and Tiburon.

With a 4-wire design, square connector, and 18 x 1.5 mm thread size, this oxygen sensor is specified for front and rear positions depending on vehicle application. The Delphi ES10659 is a direct-fit choice for drivers replacing a worn sensor on a 1996-1997 Hyundai Accent or related Hyundai models listed below.

Key Features

• Heated oxygen sensor for faster operating temperature and stable signal output
• 4-wire configuration for application-specific exhaust system integration
• Square connector shape for OE-style electrical connection
• 18 x 1.5 mm thread size for proper exhaust bung fitment
• Overall length: 360.0 mm
• Package includes oxygen sensor and instruction sheet
• Compatible with front and rear positions, depending on vehicle application

Detailed Description

Delphi ES10659 is engineered for vehicles that rely on accurate oxygen sensor feedback to manage air-fuel ratio and emissions performance. Delphi’s OE heritage and supplier experience are reflected in the sensor’s construction, connector design, and fitment-focused specifications. This part cross-references DENSO Auto Parts 234-4692 for the same application.

Compatible With 1997 Hyundai Accent, rear; 1997 Hyundai Accent, front; 1996-1997 Hyundai Accent, front; 1996-1997 Hyundai Elantra, front; 1997 Hyundai Tiburon, front; and 1996 Hyundai Accent, rear. Use the vehicle application details to confirm the correct position before installation. Delphi ES10659 is a practical replacement for Hyundai Accent oxygen sensor service and other listed Hyundai exhaust sensor applications.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel mixture readings from a failing sensor
• Reduced emissions control efficiency
• Rough idle or drivability issues tied to exhaust feedback faults
• Slow sensor response during closed-loop operation

Installation Notes and Tips

Confirm the sensor position, thread size, and connector shape before installation. Because this part is listed for both front and rear positions, match the application tab to your exact vehicle and emission setup. Inspect the harness routing and exhaust bung condition before threading in the new sensor, and follow the included instruction sheet during replacement.

Quality Assurance

Delphi builds aftermarket parts using knowledge developed through long-term OE supply experience with major automakers. That OE background informs the design and application matching of the ES10659 oxygen sensor.