x 1.5 Header Mount 304 Stainless Steel Header Straight Thread Connector 45mm Sensor Header Adapter Universal Auto Parts Product description： Material: The mounting plug is made of stainless steel (304 stainless steel for corrosive environments, sturdy and body design), easy to weld on O2 sensor components, exhaust , headers, downpipes, etc. Installation: Install a solder plug to replace or add a sensor port to any OEM or exhaust or exhaust pipe. Drill holes and solder mounting plugs. Size: x 1.5 thread adapter, please the product size before purchasing. 【Parameters】For your custom oxygen sensor installations, exhausts, downpipes, headers, intercoolers and other installations that require brazed or welded metric connections. Included: 1pc adapter x 1.5 Header Mount 304 Stainless Steel Header Straight Thread Connector 45mm Sensor Header Adapter Universal Auto Parts Material: The mounting plug is made of stainless steel (304 stainless steel for corrosive environments, sturdy and body design), easy to weld on O2 sensor components, exhaust , headers, downpipes, etc. Installation: Install a solder plug to replace or add a sensor port to any OEM or exhaust or exhaust pipe. Drill holes and solder mounting plugs. Size: x 1.5 thread adapter, please the product size before purchasing. 【Parameters】For your custom oxygen sensor installations, exhausts, downpipes, headers, intercoolers and other installations that require brazed or welded metric connections.