DENSO 234-9022 Air-Fuel Ratio Sensor Heated Direct Fit - 4-Wire

The DENSO 234-9022 is a premium air-fuel ratio sensor engineered to deliver OE-quality performance and emissions control for Lexus and Toyota vehicles. This heated, wide-band sensor monitors the air-to-fuel mixture in the exhaust stream and sends real-time data to the engine management computer to optimize combustion efficiency under all driving conditions.

Key Features:

• Quick-response planar zirconia element detects oxygen concentration with precision
• Measures air/fuel ratios from approximately 12:1 to 19:1 for optimal engine tuning
• Tarnish-proof platinum electrode provides extended sensor life and accuracy
• Double protection cover maintains proper operating temperature for faster response times
• Rugged stainless steel housing with porous PTFE filter resists corrosion and contamination
• Aluminum oxide coating prevents silicone and lead damage to ceramic element
• 4-wire heated design with 13.39-inch wire length and M18 thread size
• Direct-fit connector for hassle-free installation

Performance Benefits:

• Maximizes engine performance and fuel efficiency throughout the RPM range
• Reduces harmful emissions by maintaining optimal air-fuel mixture
• Lowers fuel consumption and extends catalytic converter life
• 100% tested for high-temperature signal output, air tightness, continuity, and heat resistance

DENSO manufactures this sensor to the strictest OE standards, ensuring precision-built quality for exact replacement and a first-time fit. As an OE manufacturer for major automakers, DENSO brings decades of sensor technology innovation to the aftermarket. Cross-references Toyota OEM numbers 8946733180, 8946742090, 894670E040, 8946707040, 894670R020, 8946748130, 8946760050, 8946704070, and 8946742120.