Water Pump SBC Short Adj

The Stewart Water Pump SBC Short Adjustable (Part No. 42200) is a mechanical stage 4 water pump engineered specifically for small block Chevy engines. This adjustable aluminum pump features a short design that maximizes underhood clearance while maintaining the reliability required in high-performance and marine cooling applications. The 3/4-inch pilot accommodates standard small block Chevy engine configurations, making it a direct upgrade path for builders seeking improved cooling capacity with minimal installation complexity.

Cast in natural aluminum, the pump delivers stage 4 performance characteristics—enhanced flow capacity compared to OEM designs—while the adjustable pulley arrangement allows fine-tuning of belt drive ratios to match specific engine displacement, RPM range, and cooling demand. The compact short profile is particularly valued in tight engine bays where traditional long-design pumps interfere with headers, intake manifolds, or custom fabrication. At 7.2 lbs, the pump integrates without adding significant weight penalty, a consideration for street performance and race-weight applications alike.

This pump serves engine builders, hot rod restorers, and marine engine technicians who require precise cooling control beyond factory capabilities. Whether upgrading a carbureted small block, supporting a modern EFI conversion, or managing coolant flow in a turbocharged or supercharged build, the adjustable mechanism and stage 4 displacement make this a versatile component. The aluminum construction resists corrosion in typical automotive and freshwater marine environments, supporting long-term reliability across diverse climates and duty cycles.