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NPT Plug w/ Internal Hex
When the shifter handle is pulled into low gear
MSD is making Atomic EFI the simple solution for your LS EFI needs
Holley went back to the drawing board and built the ultimate air valve for your LS engine
Hobbs Adjustable Pressure Switch NOS15670 Product:7psi. Normally Closed NPT Plug w/ Internal HexHobbs Adjustable Pressure Switch7psi. Normally Closed NOS15670 S15670 These switches prevent your nitrous system from engaging when the fuel pressure is below a safe level. These easy to install versions for all carburetor and direct port nitrous systems are preset at 4 psi and are adjustable from 4 to 7 psi. For EFI applications, NOS offers safety switches preset at 50 psi that are adjustable from 30 to 70 psi.
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