Volkswagen & Audi coolant temp sensor adapter M10x1 & 1/8npt - North Westy
Amazon.com: GlowShift 16mm 5/8" ID Hose Attachment Adapter for Water Coolant Oil Transmission Temperature Gauge Sensor - Includes Hose Clamps : Automotive
Bassani 18mm To 12mm O2 Sensor Bung Adapter For Harley Exhaust - RevZilla