22274 Denso Oxygen Sensor 234-4142

Genuine Denso Oxygen Sensor 234-4142

Ensure optimal engine performance and emissions control with the Denso Oxygen Sensor 234-4142 (SKU 22-274). This premium OEM-quality 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 Mazda RX8 FE 13BMSP rotary engine applications.

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Key Features & Benefits

• Genuine Denso Quality - OEM-grade component built to exacting standards
• Precise Air-Fuel Monitoring - Ensures optimal combustion and engine efficiency
• Rotary Engine Specific - Designed for Mazda RX8 13BMSP rotary applications
• Improved Fuel Economy - Helps maintain proper fuel mixture for better mileage
• Reduced Emissions - Keeps your vehicle running clean and compliant
• Enhanced Engine Performance - Prevents rough running and power loss
• Durable Construction - Built to withstand extreme temperatures and harsh conditions
• Direct Replacement - Perfect fit for Mazda RX8 FE 13BMSP

Technical Specifications

• Denso Part Number: 234-4142
• Sensor Type: Heated Oxygen Sensor (HO2S)
• Primary Application: Mazda RX8 FE 13BMSP Rotary Engine
• Weight: 0.25 kg

Vehicle Compatibility

This Denso oxygen sensor is designed for Mazda RX8 FE models equipped with the 13BMSP rotary 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:

• N3H318861A (Mazda)
• N3H318861B (Mazda)
• N3H318861B9U (Mazda)
• N3H218861 (Mazda)
• N3H218861A (Mazda)
• N3H218861B (Mazda)
• N3H218861C (Mazda)
• N3H218861C9U (Mazda)
• EGO-274 / EGO274

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

Why Choose Denso Oxygen Sensors?

Denso is a world-leading OEM supplier of oxygen sensors, trusted by Mazda 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—especially critical for rotary engines like the 13BMSP.

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.

Need help with fitment or installation? Contact our expert team for advice specific to your Mazda RX8 FE 13BMSP rotary engine.