GROCO 1-1/2" 90 Degree Hose Thru-Hull Fitting

The GROCO 1-1/2" 90 Degree Hose Thru-Hull Fitting is a marine-grade plumbing essential for any serious boater managing raw water, cooling, or discharge systems. After years on the water, you learn that thru-hull fittings are where reliability cannot be compromised—a single corroded or leaking connection can turn a day of fishing into an emergency repair job. This 90-degree configuration allows you to route hose runs efficiently through tight engine compartments and hull spaces where straight fittings simply won't fit, making it indispensable for modern boat builds and retrofit installations.

Built from #316 stainless steel on the thru-hull side with a bronze hose connection, this fitting delivers the corrosion resistance needed in saltwater and freshwater environments alike. The 90-degree barb design seats securely into marine-grade hose, creating a leak-proof connection that withstands engine vibration and fluctuating water pressure. UL Listed to standard 647B, the fitting meets strict marine safety and performance certifications, ensuring it performs under the demanding conditions of continuous engine operation and coastal exposure.

This 1-1/2" fitting suits mid-sized cruisers, fishing boats, and working vessels where flow volume demands a larger diameter than smaller thru-hulls can provide. Installation requires cutting a matching hole in the hull and securing from both inside and outside; the bronze hose connection accepts standard marine hose clamps for a watertight seal. Whether you're upgrading an aging cooling system or building a new vessel from the keel up, the GROCO thru-hull fitting delivers the durability and corrosion immunity that keeps your boat running and your crew safe.