Features: 1.This Oxygen Sensor Adapter is made of premium stainless steel for enhancing its durability and corrosion resistance 2.Best used for modified Off Road racing, testing and performance tuning 3.Universal for any thread size of 18mm, straight bolt-on, no modification is needed 4.Improves gas mileage, enhance the performance of the vehicle 5.Designed for Off Road, competition race or experimental vehicles only, may not be used on highway vehicles Specification: Features:_x000D_ _x000D_ This Oxygen Sensor Adapter is made of premium stainless steel for enhancing its durability and corrosion resistance. _x000D_ Best used for modified Off Road racing, testing and performance tuning. _x000D_ Universal for any thread size of 18mm, straight bolt-on, no modification is needed. _x000D_ Improves gas mileage, enhance the performance of the vehicle _x000D_ Designed for Off Road, competition race or experimental vehicles only, may not be used on highway vehicles. _x000D_ _x000D_ Specifications:_x000D_ Conditions: 100% Brand New_x000D_ Material: Stainless Steel, Chrome_x000D_ Color: Silver_x000D_ Thread: 18mm/ 0.7in_x000D_ Package Weight: Approx.208g_x000D_ Fitment: For Off Road, competition race or experimental vehicles only, may not be used on highway vehicles_x000D_ _x000D_ Package List:_x000D_ 1 * Oxygen Sensor Adapter PackageList: