NTK OE Type 5-Wire Wideband Air/Fuel Ratio Sensor

NTK OE Type 5-Wire Wideband Air/Fuel Ratio (A/F) Sensors deliver the same precision engineering trusted by major automakers worldwide — available as direct-fit aftermarket replacements. As part of the Niterra family of products, NTK is the world's largest supplier and manufacturer of original equipment oxygen sensors, backed by decades of advanced ceramics expertise and continuous innovation.

Unlike conventional switching oxygen sensors that toggle between rich and lean states, wideband A/F sensors produce a continuous linear output signal that allows the engine control unit (ECU) to determine exactly how rich or lean the engine is running and make precise, real-time adjustments to the air/fuel mixture. This keeps combustion as close to the ideal stoichiometric ratio as possible, maximizing efficiency and minimizing emissions across the full operating range.

Key Features:

• OE-quality construction — manufactured to meet or exceed original equipment specifications for fit, form, and function
• Advanced ceramic sensor element — 3-stage contaminant-resistant plasma jet and deposit trap overcoat protects against element poisoning
• Dual-coated platinum interface — superior platinum element with thinner ceramic construction delivers faster light-off and response times with maximum durability
• 5-wire wideband design — provides a precise linear output signal for continuous, accurate air/fuel ratio monitoring across a broad operating range
• OE-specified connectors — water-resistant connectors and harness hardware included for straightforward, direct-fit installation
• 100% new construction — built entirely from new components with no remanufactured parts for long-term reliability
• Validated at the factory — every sensor is tested during manufacturing to guarantee OE-level quality and performance straight out of the box

NTK wideband A/F sensors play a critical role in a vehicle's on-board diagnostic system, maintaining optimal engine performance, maximizing fuel efficiency, and reducing harmful emissions. As modern vehicles incorporate increasingly connected and automated systems with more demanding sensor requirements, NTK remains the professional's choice — The Sensor Specialist — for full-line market coverage and OE-grade application technology.