Nitrous Outlet Nozzle Adapters are a two piece locking design to prevent the nozzle from working loose and allowing the nozzle adapter to fall into the intake manifold.
00-01669 Nitrous Outlet 1/8 NPT Nozzle Adapter
00-01668 Nitrous Outlet 1/16" NPT Nozzle Adapter
15625 Nitrous Express Nozzle Adapter for 1/16 NPT Nozzles
1/16" NPT Pass-Through Nozzle Adapter Fitting
LT Engine Swap Male M12-1.75 Adapter Female 1/4-18 NPT Oil Pressure Sensor LT1
Nitrous Express 15719 Aluminum EFI Nozzle Adapter Fitting for Shark Nozzle