Fitting 1-1/2 Water Pump Inlet Long

The CVR Performance Fitting 1-1/2 Water Pump Inlet Long is a precision aluminum intake adapter designed for high-flow cooling system upgrades in performance engine builds. Whether you're transitioning from factory cooling architecture to a custom loop or installing an aftermarket water pump with increased displacement, this long-style inlet fitting provides the stepped diameter transition needed to match 1-1/2-inch hose and pump ports seamlessly. Built for engines where every fraction of a degree matters—from street builds to competition platforms—this fitting ensures optimal coolant delivery without flow restriction.

Machined from lightweight aluminum alloy, the fitting features a long inlet design that extends engagement surface for maximum structural integrity under high-pressure cooling applications. The stepped bore geometry promotes laminar coolant flow while the extended length accommodates tight engine bay layouts common in modern street machines and race platforms. At just 0.37 pounds, this component adds negligible weight while maintaining the precise dimensional tolerances necessary for vibration-free operation at sustained RPM. The compact footprint (3.75 × 1.85 × 7.9 inches) allows installation in space-constrained applications without requiring extensive exhaust or accessory relocation.

This adapter is ideal for builders upgrading to performance water pumps from manufacturers like Edelbrock, Holley, or custom fabricators running polished aluminum radiators and cold-corner block passages. The long inlet configuration suits applications where hose routing demands additional clearance or where multiple fittings must coexist on a single pump housing. Installation requires only standard wrenches or hose clamps depending on your cooling system design; ensure proper coolant flow direction and use quality hose barbs or AN adapters at both inlet and engine block connections. Compatible with ethylene glycol-based and aluminum-safe coolants across domestic and import V8, LS-platform, and small-block engine families.