GROCO 1-1/4" Bronze Combo Scoop Thru-Hull w/Nut

The GROCO 1-1/4" Bronze Combo Scoop Thru-Hull with Nut is a marine through-hull fitting engineered for high-flow intake applications on vessels requiring reliable seawater circulation. Machined from C83600 bronze, this thru-hull combines corrosion resistance with the structural integrity needed for demanding saltwater environments. The scoop design captures water efficiently, making it ideal for engine cooling systems, live wells, and washdown applications where flow rate exceeds standard through-hull capacity.

The 1-1/4" diameter opening delivers increased flow compared to conventional through-hulls, a critical advantage for larger vessels or systems requiring sustained high-volume water delivery. This fitting features NPSM/NPT combination threading, accommodating both straight pipe and tapered pipe connections for flexible installation options. C83600 bronze is the marine standard for through-hull fittings—it resists dezincification and corrosion from saltwater exposure far better than lesser alloys, ensuring decades of reliable service without degradation. The included nut simplifies installation by providing a secure, integrated fastening point at the hull interface.

This through-hull suits both cruising sailboats and working fishing vessels where engine cooling, raw water intake, or emergency washdown systems demand proven, no-compromise hardware. Skippers maintaining their own systems appreciate GROCO's straightforward design—no complex internals to corrode, no moving parts to fail. Whether upgrading an aging thru-hull or equipping a new build, the 1-1/4" scoop model provides the flow capacity and material integrity that keeps vessels operating reliably offshore and in coastal waters.