Universal O2 Oxygen Sensor Adapter Stainless Steel Stepped Mounting Plug M18x15 Thread w/Copper Washer for Exhaust System Fit Universal O2 Oxygen Sensor Adapter Stainless Steel Stepped Mounting Plug M18x1.5 Thread w/Copper Washer for Exhaust System Fit Specifications Thread Standards : Dual Metric Threads (M18x1.5) Material : 304 Stainless Steel Body + C110 Copper Washer (Anti-Seize Coated) Dimensions : M18 Plug: 27mm Hex Head, 42mm Total Length Temperature Resistance : -50°C to +650°C (Continuous) / +900°C (Short-Term) Pressure Rating : 45 PSI Working / 150 PSI Burst Applications Exhaust Systems : Fixes O2 sensor mounting mismatch in catalytic converters/resonators Vehicle Compatibility : Universal fit for Ford/BMW/Toyota aftermarket exhaust upgrades Critical Functions : Seals exhaust leaks between mismatched sensor/pipe threads Prevents false air-fuel ratio readings (Anti-vibration stepped design) Warranty Support 12 -Month Quality Warranty : Free replacement for thread rust or deformation ️ Exclusions : Physical damage from improper installation tools Pro Tips Pre-Installation : Clean exhaust threads with wire brush & apply high-temp nickel anti-seize Torque Sequence : Hand-tighten adapter → ½ turn with wrench → Final 15° torque (15-18 Nm) Leak Test : Start engine cold & check for exhaust hissing at 2,500 RPM Washer Care : Replace copper washer if flattened beyond 1.2mm thickness Package Includes 1x M18x1.5 Adapter Plug 1x Copper Washers (Pre-installed) _x000D_