Features: 1.Polished front surfaces enabling perfect tightening 2.Internal and external thread M18 x 1.5 3.Threads made with dedicated tool, perfect accuracy and repeatability 4.Exhaust gas inlet hole 3 mm. In extreme situations narrowing of the inlet hole prevents motor failure (driving at high speed). 5.Simple installation. Just unscrew the lambda oxygen sensor, screw in the emulator in its place and then screw in the oxygen sensor. Specification: Features: _x000D_ Stainless steel material._x000D_ _x000D_ Internal and external thread M18 x 1.5._x000D_ _x000D_ Outer contour: the hexagonal TURN-KEY 27._x000D_ _x000D_ Exhaust gas inlet hole 3 mm. In extreme situations narrowing of the inlet hole prevents motor failure (driving at high speed)._x000D_ _x000D_ Polished front surfaces enabling perfect tightening._x000D_ _x000D_ Threads made with dedicated tool, perfect accuracy and repeatability._x000D_ _x000D_ Made by professional manufacturer, quality assurance._x000D_ _x000D_ Simple installation. Just unscrew the lambda oxygen sensor, screw in the emulator in its place and then screw in the oxygen sensor._x000D_ _x000D_ _x000D_ _x000D_ Specifications: _x000D_ Material: Steel _x000D_ Color: Silver _x000D_ Package Weight: approx. 109g _x000D_ _x000D_ _x000D_ Package Included: _x000D_ 1 x Oxygen Sensor Extender Spacer PackageList: