Genuine Denso Oxygen Sensor 234-4613 (Post Cat)

Ensure optimal engine performance and emissions control with the Denso Oxygen Sensor 234-4613 (SKU 22-615). This premium OEM-quality post-catalytic converter oxygen sensor is engineered by Denso to accurately monitor exhaust oxygen levels, enabling the ECU to maintain optimal air-fuel ratios, reduce emissions, and maximize fuel economy for Subaru Impreza GD/GG/G3 and Liberty BL/BP EJ204 applications.

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Key Features & Benefits

• Genuine Denso Quality - OEM-grade component built to exacting standards
• Post-Cat Application - Monitors catalytic converter efficiency
• Improved Fuel Economy - Helps maintain optimal fuel mixture for better mileage
• Reduced Emissions - Keeps your vehicle running clean and compliant
• Enhanced Engine Performance - Prevents rich or lean running conditions
• Durable Construction - Built to withstand extreme temperatures and harsh conditions
• Direct Replacement - Perfect fit for Subaru Impreza and Liberty models

Technical Specifications

• Denso Part Number: 234-4613
• Sensor Type: Heated Oxygen Sensor (HO2S) - Post Catalytic Converter
• Primary Application: Subaru Impreza GD/GG/G3 & Liberty BL/BP EJ204
• Weight: 0.25 kg

Vehicle Compatibility

This Denso oxygen sensor is designed for Subaru Impreza GD, GG, G3 and Liberty BL, BP models equipped with the EJ204 engine. Always verify fitment for your specific vehicle.

CLICK HERE TO CHECK IF THIS FITS YOUR VEHICLE.

OEM Part Number Cross-Reference

This Denso oxygen sensor replaces the following OEM part numbers:

• 22690AA831 (Subaru)
• 22690AA970 (Subaru)
• 22690AA891 (Subaru)
• 22690AA890 (Subaru)
• EGO-615 / EGO615

Common Symptoms of Faulty Oxygen Sensors

• Check engine light illuminated (P0130-P0167 codes)
• Poor fuel economy
• Rough idle or engine hesitation
• Failed emissions test
• Loss of power during acceleration
• Strong fuel odor from exhaust
• Black smoke from exhaust
• Catalytic converter efficiency codes

What Does a Post-Cat Oxygen Sensor Do?

The post-catalytic converter oxygen sensor (also called a downstream O2 sensor) monitors the oxygen content in the exhaust gases after they pass through the catalytic converter. This allows the engine control unit (ECU) to verify that the catalytic converter is working efficiently and to fine-tune the air-fuel mixture for optimal emissions control and fuel economy.

Why Choose Denso Oxygen Sensors?

Denso is a world-leading OEM supplier of oxygen sensors, trusted by Subaru and other major manufacturers worldwide. Their sensors are designed to meet or exceed original equipment specifications, ensuring accurate readings, long-lasting reliability, and optimal engine performance.

Why Choose LM15 Motorsport?

We supply genuine Denso oxygen sensors with fast shipping across Australia. Every part is carefully inspected to ensure you receive the exact component your vehicle needs for reliable performance and emissions compliance.