Groco

GROCO Marine Plumbing & Boat Hardware at CritPro

GROCO has been a trusted name in marine plumbing and onboard fluid management for more than a century, manufacturing premium components designed for recreational and commercial vessels. Known for exceptional engineering, rugged construction, and dependable performance, GROCO products are relied upon by boat builders, marine technicians, and boat owners worldwide. CritPro carries a growing selection of genuine GROCO seacocks, strainers, thru-hull fittings, valves, pumps, and marine plumbing accessories built to perform in demanding freshwater and saltwater environments.

Whether you're installing a new plumbing system, replacing aging hardware, or upgrading critical onboard systems, GROCO offers professional-grade solutions engineered for long service life. Their extensive product lineup includes raw water strainers, bronze seacocks, ball valves, thru-hull fittings, intake scoops, hose fittings, engine flushing systems, oil change pumps, fuel system components, manifold systems, and marine plumbing accessories. Manufactured from corrosion-resistant bronze, stainless steel, and other marine-grade materials, GROCO products are designed to withstand harsh marine conditions while providing dependable operation and easy maintenance.

From center consoles and sportfishing boats to cruisers, sailboats, yachts, and commercial vessels, GROCO products help maintain safe, efficient, and reliable onboard plumbing systems. Whether you're servicing an engine cooling system or upgrading your boat's plumbing infrastructure, GROCO delivers marine hardware trusted throughout the boating industry.

Shop related categories: boating, marine electronics, marine safety, anchoring & docking, and panels, switches & circuit breakers.