5/16" 8mm PUSH BARB HOSE TAIL T-PIECE INLINE 1/8 NPT Fuel Pressure Gauge Sensor

5/16" straight push barb union with 1/8 NPT thread inline take off, fit inline of your fuel/oil hose and plumb a 1/8 npt sensor into inline port. 5/16" (8MM) T-PIECE WITH INLINE 1/8 NPT TAKE OFF ADAPTER.

eBay