NGK Porsche Panamera 2016-2010 Direct Fit Oxygen Sensor 2017-nissan-gt-r-esi9011238 The internal diameter is a

The internal diameter is a full 5/8

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NGK Porsche Panamera 2016-2010 Direct Fit Oxygen Sensor 2017-nissan-gt-r-esi9011238 The internal diameter is aNTK is the world's largest supplier and manufacturer of OEM oxygen sensors. Oxygen sensors play a critical role as part of the vehicle's on board diagnostic system in maintaining optimal engine performance, maximizing fuel efficiency and reducing harmful emissions. Providing constant closed loop feedback to the ECU, oxygen sensors help to control the air fuel ratio while alerting OBDII systems of possible problems with fuel delivery or catalytic