• Stage 4 pumps incorporate the all new DRV-series 8 vane CNC machined 6061-T6 billet aluminum impeller that flow up to 41% more water at twice the pressure than traditional designs

• Adjustable Casting for belt tension

• 356-T6 aluminum casting with two 1/2" NPT auxiliary ports

• Equal flow to left and right cylinder heads

• 3/4" bearing with a 3/4" shaft

• Precision ground ½” steel billet fan hub with dual bolt pattern for perfect pulley alignment

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https://www.stewartcomponents.com/tech-tips/