DENSO 234-5157 Air/Fuel Ratio Sensor Direct Fit Heated Wire - 5-Wire 24.49

The DENSO 234-5157 is a direct-fit, heated air/fuel ratio sensor featuring a 5-wire design and a 24.49-inch wire length. Engineered as an OE-quality replacement, this wide-band sensor delivers accurate exhaust oxygen readings to help your engine maintain an optimal air-fuel mixture for peak performance and emissions compliance.

Air/fuel ratio sensors — also known as A/F sensors, wideband oxygen sensors, or lambda sensors — continuously monitor exhaust gas composition and relay precise data to the engine control unit (ECU). This allows the ECU to fine-tune fuel delivery in real time, maximizing fuel efficiency, protecting catalytic converter longevity, and minimizing harmful emissions.

Key Features:

• 5-Wire heated design — reaches operating temperature quickly for accurate readings from cold start
• Wide-band technology — maps air/fuel ratios across the full RPM range for precise engine management
• Direct fit replacement — engineered for exact OE fitment with no modifications required
• 24.49-inch wire length — provides proper harness reach for correct routing and connection
• M18 thread size with 22mm hex — screw-in installation for a secure, leak-free exhaust mount
• Male terminal connector — plugs directly into the factory wiring harness
• Manufactured and tested to OE standards — built in ISO9000 / QS9000 certified DENSO facilities
• 1-Year limited warranty — backed by DENSO's commitment to quality and reliability

As one of the world's largest OE automotive suppliers, DENSO applies the same precision manufacturing expertise used in original equipment production to its aftermarket line. The 234-5157 sensor is sold individually and is a reliable, cost-effective solution for restoring proper air/fuel ratio management to your vehicle.