NGK NTK 21517 Oxygen Sensor O2 Sensor OE Replacement

The NGK (NTK) 21517 oxygen sensor, also called an O2 sensor, is a direct-fit replacement sensor for the exhaust system. It monitors the oxygen content of the exhaust gas and sends voltage signals to the engine control unit. The ECU uses these signals to regulate the air/fuel ratio for efficient combustion, lower emissions and good fuel economy.

Key Features:

• Designed for an OEM application, including wire length, protective sleeve material, grommets, clips and protection tube design
• Thimble-type sensor with a ceramic element that projects into the exhaust stream and becomes electrically conductive at high temperature
• Platinum-coated element for durability, and individually tested for quality
• Factory-fitted OE-style connector for simple plug-in installation
• Flange mount design with electrical signal output
• Helps reduce emissions, support fuel economy and protect the catalytic converter
• UPC 087295215173

NTK is the oxygen sensor brand of NGK Spark Plugs and a leading original equipment supplier of oxygen sensors. The 21517 offers OE-quality construction and reliable performance as a replacement.