K-Tuned Oil Pressure Sensor Adapter: K Series Parts
GM Fuel Pressure Sensor Adapter - VaporWorx
1/2NPT to 1/8PT Oil Temperature Sensor Adapter
Amazon.com: Water Temperature Sensor Adapter - 38mm - Black Mishimoto -MMWHS-38-BK : Automotive
2PC Oil Pressure Adapter Fitting M16x1.5 to 1/8 NPT LS Swap Gauge Sensor Adapter | eBay
Amazon.com: GlowShift 16mm 5/8" ID Hose Attachment Adapter for Water Coolant Oil Transmission Temperature Gauge Sensor - Includes Hose Clamps : Automotive
O2 sensor adapter/flange for Toyota applications
Flex fuel sensor adapter with bypass design, with no flow loss