NOS/Nitrous Oxide System - Adjustable Pressure Switch, 50 PSI Adjustable Pressure, Normally Open Mechanical Cooling Fan - 18

Mechanical Cooling Fan - 18 in Fan - 4 Blade - 1

Intake Manifold - Performer - Spread / Square Bore - Dual Plane - Aluminum - Natural - Small Block Chevy - Each

Fitting - Adapter - 90 Degree - 6 AN Male to 3/8 in NPT Male Swivel - Aluminum - Black Anodized - Each

Wire Crimping Tool - Pro - Ratcheting Mechanism - Cushion Grip - Steel - Black Oxide - Each

Introducing the Holley EFI sensor block

NOS/Nitrous Oxide System - Adjustable Pressure Switch, 50 PSI Adjustable Pressure, Normally Open Mechanical Cooling Fan - 1850 PSI Adjustable Pressure Switch (Normally Open) You don't want to be blasting nitrous into the engine if fuel pressure is below what is required to supply the required extra fuel.