Stewart Stage 3 Severe Duty Water Pump - 3/4 in Pilot - Short Design - Small Block Chevy 2 Sided Tape it means that these are

it means that these are not suitable for open-top car racing or for karting

steel body)Vehicle Applications: Volkswagen Beetle 2010-1998

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1969-1974 Ford Galaxie 500

Stewart Stage 3 Severe Duty Water Pump - 3/4 in Pilot - Short Design - Small Block Chevy 2 Sided Tape it means that these areStage 3 These pumps are assembled with exclusive EMP Stewart Components 356 T6 heat treated aluminum castings. Designed in our cooling system research and development lab and precision machined on CNC machining centers. The fan hubs are 1 2" thick and machined from billet steel. These hubs are preferred by many top engine builders for lower vibration in higher RPM applications. Recommended for Moderate to heavy racing applications. All Stage 3 pumps