O2 Oxygen R Test Extension Extender Adapter Spacer M18 X 1.5

these are neeeded when using a hho system or a test . they are also used to lean out your vehicle for better gas mileage.they are very easy to install by unscrewing your O2 r from your exhaust then screw your r into the extender and then screw the two pieces back into your exhaust.the extender has A 7/8 hex head which is the same size as most O2 rs and it makes them easier to install not like the straight sided extenders.fits most rs with a1/2 inch diameter tip. the size of the extenders is M18 X 1.50 and they are 1.253 inches long and drilled out to .5175 inches. if you need more clearance you can stack them and they have a tapered seat no washer needed.Color: SilverMaterial: Model:M18*1.5Universal For Any Thread Size Of 18mmStraight Bolt-On, No Modification NeededVery Easy To InstallPackage Contents:1PCS X oxygen rOnly the above package content, other products are not included.Note: Light shooting 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.

About shipping
Shipping and Packaging All it will be double checked and well packed before sending.It will be dispatched within 2 business days ar buyers pay for the order. It usually takes about 14 to 18 working days for delivering the package to the destination(for remote areas,it may take a little longer). 

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