Works with All Holley pass. side R4 LS brackets. Has a port for adding high pressure safety switch. Features a 5 inch clutch pulley for safer RPM operation. It has a 8mm weather pin clutch connector. For use with manifold using 5/8 inch x 5/8 inch sealing washer design. Product Features:Works With All Holley Passenger Side R4 LS BracketsPort For Adding [Optional] High Pressure Safety Switch5in. Clutch Pulley For Safer rpm OperationWeatherproof 8 mm Pin Clutch Connector
