1.75in Hose Water Neck Fitting - Blue

The 1.75in Hose Water Neck Fitting - Blue from Meziere is an essential cooling system component for builders pursuing serious engine modifications and high-performance cooling upgrades. Whether you're upgrading from stock aluminum heads to aftermarket options or installing a custom radiator and water pump combination, this water neck fitting serves as the critical transition point between your engine block and upper radiator hose. Its role is straightforward but non-negotiable: provide a secure, leak-free connection that handles coolant flow and pressure cycles without compromise during street, strip, or track duty.

Engineered by Meziere, a respected manufacturer of cooling system components, this 1.75-inch water neck fitting is designed to mate directly with standard 1.75-inch diameter hoses, a common size in small-block and mid-size engine applications. The blue anodized finish not only provides visual appeal but also offers corrosion resistance superior to cast-iron alternatives, extending service life in high-vibration engine bays. The compact footprint—measuring 4.6 x 2.2 x 5.35 inches and weighing just 0.26 pounds—ensures minimal packaging interference in tight engine compartments where space is at a premium. Quality aluminum construction allows for thermal conductivity that supports efficient heat transfer while remaining light enough to reduce overall vehicle weight.

This fitting is ideal for enthusiasts installing performance water pumps, high-flow radiators, or modern aluminum cylinder heads on classic and late-model engines alike. Installation is straightforward—the 1.75-inch bore accepts standard hose with hose clamps, requiring no special tools or machine work. Verify your hose inner diameter matches 1.75 inches before purchase to ensure proper fit and eliminate the risk of leaks that could compromise engine temperatures during critical performance runs. The blue anodized aluminum construction makes troubleshooting cooling system issues easier, allowing you to spot leaks or corrosion at a glance during routine maintenance.