Sealing, wide clamping range, dustproof and waterproof, easy to install, easy to start, check with special tools, high precision and reusable threads .Function: Check engine light fix x 1.5 sensor vulnerabilityDon't take a chance on using an extension only as often they do not work, this is a real mini Catalytic Converter built into it.This O2 cel fix with miniature will trick your ECU into thinking the stock catalytic converter is still installed.When you remove your catalytic converter, your post O2 sensor will see higher temperatures and greater flow of unburnt fuel.Type: Non Heating Typecolour:BlackMaterial:Iron + electro-galvanizedsize:Internal and external thread x 1.5, length 43mmPackage Contents:5 x Sensor connectorOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.