High volume. Maximum flow. Proflow's new CoolMax water pump for LS Holden/Chev are ideal for street, strip, and high demand applications requiring increased volume. Cast from high-strength A356-T6 aluminium, it features curved, enlarged internal passages that deliver significantly greater flow rates than factory pumps. It also boasts an anti-cavitation impeller, lightweight billet aluminium pulley, leakproof seals and gaskets, and heavy duty roller bearing assemblies. Available in your choice of