1in - 1-1/4in Adapter

The 1in – 1-1/4in Adapter by MOROSO is a precision straight-thread fitting engineered to connect hydraulic, pneumatic, or fluid transfer systems where hose diameter transitions are necessary. Designed for technicians, mechanics, and equipment builders who require reliable NPT (National Pipe Thread) to hose barb conversion, this adapter eliminates leaks and pressure loss at critical junction points. Whether you're assembling a custom cooling system, air suspension setup, or industrial fluid line, this fitting provides the dependable interface your application demands.

Constructed from lightweight yet corrosion-resistant aluminum, the 1in – 1-1/4in Adapter features a natural finish that resists oxidation in demanding environments. The straight-design geometry minimizes turbulence and maintains flow integrity, while the 1 inch NPT male thread integrates seamlessly into standard industrial port configurations. The 1-1/4 inch hose barb end accepts standard hose sizes and creates a secure, leak-proof seal when coupled with appropriate hose clamps. Aluminum construction keeps total weight to just 0.21 pounds, making it suitable for weight-sensitive applications such as racing, aviation, or mobile hydraulic systems.

This adapter is ideal for custom chassis builders, marine technicians, and OEM engineers working with modular fluid systems that require size step-ups. Installation is straightforward: thread the NPT male end into your manifold, block, or pump port using appropriate pipe sealant or thread tape, then attach your hose to the barb end using stainless steel clamps. The compact 5.45 x 1.55 x 7.1 inch profile fits tight engine bays and equipment frames without sacrificing durability. Stock this MOROSO adapter (SKU MOR63544) for immediate deployment in your workshop or fleet maintenance program.