Perko 1" Thru-Hull Fitting f/ Hose Plastic MADE IN THE USA

The Perko 1" Thru-Hull Fitting for Hose Plastic is a time-tested marine component built for reliable through-hull penetrations on fishing boats, cruisers, and water-going vessels of all types. After years on the water, any experienced angler knows that through-hull fittings are non-negotiable safety components—they handle bilge pump discharge, raw water intake, and drainage lines that keep your boat functioning in demanding saltwater and freshwater environments. This molded white plastic fitting from Perko, a brand trusted across the marine industry for decades, delivers the durability and corrosion resistance required for long service life without the weight penalty of metal alternatives.

Engineered with a broad flange design, the Perko 1" thru-hull fitting accommodates 1-inch hose connections and features a generous 2.25-inch outer diameter flange that distributes load evenly across your hull. The mounting hole diameter is 1-5/16 inches, sized to accept standard fastening hardware, while the fitting handles hull thicknesses up to 1.5 inches—covering most fiberglass, aluminum, and composite hull constructions. Molded from durable white plastic, this fitting resists UV degradation, saltwater corrosion, and the freeze-thaw cycles that can crack inferior materials, ensuring it won't fail or weep at critical moments when you're miles offshore or deep in a remote tributary.

Boaters running livewell systems, bilge pumps, transom drain ports, or any through-hull plumbing application benefit from this straightforward, proven design. Installation is direct: drill the mounting hole, slide the fitting through the hull, and secure with the provided backing flange and fasteners—a 20-minute job that yields years of leak-free performance. Made in the USA, this Perko fitting meets marine standards and works seamlessly with standard 1-inch hose clamps and marine-grade hose, making it a smart replacement or upgrade for aging through-hulls that show signs of weeping or cracking. Stock one aboard for emergency repairs or keep it as a system upgrade to eliminate plastic or bronze fittings prone to fouling and corrosion.