Holley products have been the undisputed leader in fuel systems for over 100 years. Holley carburetors power every NASCAR Sprint Cup team and every NHRA Pro–Stock champion. Holley's products include performance fuel pumps, fuel injection, intake manifolds, cylinder heads & engine dress–up products for street performance, race and marine applications. As a single solution, or partnered with products from other Holley companies, Hooker Headers, Flowtech Headers, NOS, Weiand, or Earl's, Holley products can give you the edge you need over the competition. .25 in. Orifice Providing Max Flow Easier Installation For Multi Stage Systems Pressure Balanced Design Reduces Power Draw Requires 4-6 Amps During Operation Additional Attributes: GTIN: 00090127688106 Amperage Draw: 4 to 6 Inlet Size: 0.250 in. NPT Maximum PSI: 1200 Orifice Diameter: 1/4 (0.250 in.) Outlet Size: 0.250 in. NPT WARNING CA Proposition 65: No Packaging: Quantity of Each: Package UOM: Dimension: 2.5000 x 4.5000 x 2.0000 inches