2Pcs Universal O2 Oxygen Sensor Spacer Adapater Extender Isolator, Adapter Bungs Yellow for Exhaust Systems, 45mm M18*1.5

【Heavy Duty Material】: Oxygen sensor adapter made of high quality iron which is high strength and durability to use and never have rust or corrosion. This will enable the spacer to using for a long time. Threads made with dedicated tool, perfect accuracy and repeatability 【Function】: M18*1.5 thread pitch, 45mm length Oxygen Sensor Extender Spacer Bungs Adapter. These are needed when using a HHO System or a test pipe. They are also used to lean out your vehicle for better gas milage. Increases the distance between the O2 sensor and exhaust system 【Universal Fitted】: Universal 18mm threaded socket fitment for most vehicles with the M18*1.5 O2 sensor hole 【Easy Installation】: Most modern vehicles are fitted with M18x1.5mm threaded oxygen sensors, you can easily screw your oxygen sensor into the spacer and then the spacer into your exhaust, direct bolt-on, no modIfication needed 【Service Guarantee】: Money Refund or New Replacement, long Worry-free Guarantee, and Within 24h Online Answer to you. If you have any questions on our O2 Oxygen Sensor Spacer Adapater, please feel free to contact us