Quick Answer

• Upstream O2 Oxygen Sensor for Subaru and Honda vehicles
• Replaces part numbers 22641AA140 and 22641AA280
• Heating type Holzer sensor with excellent performance metrics
• Ensures accurate air-fuel ratio measurement for optimal engine performance and emissions control

What is this Upstream O2 Oxygen Sensor?

This is a heating type Holzer sensor designed to measure the upstream air-fuel ratio in compatible Subaru and Honda vehicles.

It offers good sensitivity, resolution, repeatability, and linearity, ensuring precise readings for optimal engine performance and emissions control.

This sensor is a direct replacement for part numbers 22641AA140 and 22641AA280, making installation straightforward for mechanics and car owners alike.

Why Choose This Air Fuel Ratio Sensor?

This sensor is engineered for reliable performance and accurate air-fuel ratio measurement.

Its Holzer sensor type and heating element contribute to its good sensitivity and quick response, essential for modern engine management systems.

By ensuring the correct air-fuel mixture, this sensor helps improve fuel efficiency, reduce harmful emissions, and maintain optimal engine operation.

Specifications

This upstream O2 oxygen sensor is a heating type with a Holzer sensor technology. It provides good sensitivity, resolution, repeatability, and linearity. The part numbers it replaces are 22641AA140 and 22641AA280. The measuring range covers O2 Oxygen Sensor Upstream Air Fuel Ratio.

Specifications:

• Type: Heating Type
• Sensor Type: Holzer
• Sensitivity: Good
• Resolution: Good
• Repeatability: O2 Oxygen Sensor Upstream Air Fuel Ratio
• Part Number: 22641AA140 / 22641AA280
• Hysteresis: 22641AA140 /22641AA280

Frequently Asked Questions:

What vehicles is this O2 oxygen sensor compatible with?

This upstream O2 oxygen sensor is compatible with specific Subaru models like the Forester, Impreza, Legacy, and Outback, as well as the Honda Civic. Please verify part numbers 22641AA140 or 22641AA280 for exact fitment.

What do the part numbers 22641AA140 and 22641AA280 refer to?

These are the specific OEM part numbers that this upstream O2 oxygen sensor is designed to replace. Ensure your vehicle requires one of these numbers for proper compatibility.

What is a Holzer sensor type?

A Holzer sensor, also known as a Hall effect sensor, is a type of transducer that converts a magnetic field into an electrical signal. In O2 sensors, it's part of the technology used to detect oxygen levels.

Why is an upstream O2 sensor important?

The upstream O2 sensor (before the catalytic converter) measures the amount of oxygen in the exhaust gas. This data is crucial for the engine control unit (ECU) to adjust the air-fuel mixture for optimal combustion, performance, and emissions control.