Perko Garboard Drain & Drain Plug Assy Cast Bronze/Brass MADE IN THE USA

The Perko Garboard Drain & Drain Plug Assembly in cast bronze and brass is the marine industry standard for bilge water management on boats of all sizes. After decades on the water, any experienced boater knows that reliable drainage is non-negotiable—standing water in the bilge corrodes stringers, rots wood, and breeds algae that clogs through-hulls.

This assembly handles the job with the durability and corrosion resistance only cast bronze and brass construction can deliver, making it an essential component for both freshwater and saltwater vessels. Perko engineered this garboard drain assembly to mount at the lowest point of the bilge, where gravity naturally collects water before it becomes a problem. The cast bronze body resists corrosion in saltwater environments far better than plastic or steel alternatives, while the integrated drain plug allows quick manual bilge evacuation when needed.

The compact 3 x 2 x 6 inch footprint fits tight engine compartments without sacrificing flow capacity, and the robust brass plug seals reliably even after years of seasonal expansion and contraction. Made in the USA, this assembly meets the exacting standards Perko has maintained since 1907. Installation is straightforward for any boat owner comfortable with basic through-hull work—the assembly bolts directly into the garboard (the lowest plank of the hull) and requires only a through-hull fitting sized to standard marine specifications.