Delphi ES10135 Oxygen Sensor

Delphi ES10135 Oxygen Sensor Overview

The Delphi ES10135 is a heated upstream oxygen sensor built for precise exhaust monitoring on select Ford and Mercury applications. With OE heritage behind the design, it supports accurate air-fuel feedback for drivability and emissions control on vehicles such as the Ford F-150, Ford Bronco, and Mercury Topaz.

• Heated oxygen sensor for faster operating temperature
• 3-wire design with round connector shape
• 18 x 1.5 mm thread size
• 500.0 overall length for listed applications
• Upstream position
• Package contents: oxygen sensor and instruction sheet

OE-Style Sensor Construction

Delphi ES10135 is engineered from the brand’s long OE background and aftermarket knowledge, bringing a direct-fit replacement approach to emission control service. This heated upstream oxygen sensor is specified with a 3-pin round connector, 18 x 1.5 mm thread, and 500.0 overall length, making it a strong match for older Ford truck and car platforms that require stable exhaust-gas feedback. This part cross-references DENSO Auto Parts 234-3007 for the same application.

Vehicle Fitment

• Fits 1988-1992 Ford E-350 Econoline, N/A. Oxygen Sensor with 500mm Overall Length and 3 Pin Connector.
• Fits 1988-1992 Ford E-350 Econoline Club Wagon, N/A. Oxygen Sensor with 500mm Overall Length and 3 Pin Connector.
• Fits 1987-1992 Ford F-250, N/A. Oxygen Sensor with 500mm Overall Length and 3 Pin Connector.
• Fits 1987-1992 Ford F-350, N/A. Oxygen Sensor with 500mm Overall Length and 3 Pin Connector.
• Fits 1989-1992 Ford Ranger, N/A. Oxygen Sensor with 500mm Overall Length and 3 Pin Connector.
• Fits 1988-1991 Ford E-250 Econoline Club Wagon, N/A. Oxygen Sensor with 500mm Overall Length and 3 Pin Connector.
• Fits 1987-1991 Ford Tempo, N/A. Oxygen Sensor with 500mm Overall Length and 3 Pin Connector.
• Fits 1987-1991 Mercury Topaz, N/A. Oxygen Sensor with 500mm Overall Length and 3 Pin Connector.
• Fits 1987-1990 Ford Bronco, N/A. Oxygen Sensor with 500mm Overall Length and 3 Pin Connector.
• Fits 1989-1990 Ford Bronco II, N/A. Oxygen Sensor with 500mm Overall Length and 3 Pin Connector.
• Fits 1987-1990 Ford F-150, N/A. Oxygen Sensor with 500mm Overall Length and 3 Pin Connector.
• Fits 1987-1990 Ford Taurus, N/A. Oxygen Sensor with 500mm Overall Length and 3 Pin Connector.
• Fits 1988-1989 Ford E-250 Econoline, N/A. Oxygen Sensor with 500mm Overall Length and 3 Pin Connector.

What This Sensor Helps Address

• Check engine light related to oxygen sensor performance
• Rough idle or inconsistent fuel control from aging sensor feedback
• Failed emissions inspection tied to upstream sensor response
• Reduced fuel economy caused by inaccurate exhaust oxygen readings
• Slow sensor warm-up on heated sensor applications

Installation Notes

Confirm the connector shape, wire count, thread size, and overall length before installation. This ES10135 oxygen sensor is specified for upstream placement, so verify the sensor location on the vehicle before replacement. Use the included instruction sheet and follow proper exhaust-thread service practices to avoid cross-threading or damage during installation.

Quality Assurance

Delphi builds this replacement sensor using OE experience and supplier knowledge developed through work with major automakers. That background is reflected in the ES10135’s application-specific design and emission-control focus for Ford and Mercury vehicles.