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The lower ports are machined with 10AN ORB threads
20-0572 FEATURES:
Quantity: 12
Head machining required for high lift cams
Nissan Skyline R33 GTR
Radium Adjustable Pressure Switch bov purple The lower ports are machinedThis Adjustable Pressure Switch offers a solution for triggering staged fuel pump(s) based on positive boost pressure. This normally open (N. O.) switch features a 3 15psi adjustable set point to match any application. The stainless steel body features a 1 8" NPT male port. Connector and pins are included (assembly required). This switch ONLY activates with positive pressure. INSTALLATION NOTES: DO NOT route the main power for a fuel pump through this