GROCO ARG-1000 Series 1" Raw Water Strainer w/Monel Basket

The GROCO ARG-1000 Series 1" Raw Water Strainer with Monel Basket is the gold standard for protecting your engine's cooling and hydraulic systems from debris, sediment, and saltwater contaminants. Built for serious anglers and commercial operators who run their boats hard and demand reliability, this strainer intercepts foreign matter before it reaches your pump—preventing costly damage and unplanned downtime on the water. Whether you're running offshore, in coastal waters, or freshwater systems, raw water intake protection is non-negotiable for engine longevity.

GROCO engineered the ARG-1000 with a marine-grade Monel basket—a corrosion-resistant alloy that withstands saltwater exposure far better than stainless steel alone. The 1" port accommodates standard through-hull fittings and accepts a 100-micron straining element to capture particles that would otherwise scar pump impellers or restrict flow. Tool-free removal and replacement design means you can service the basket without special equipment or prolonged deck work, while dual bonding connections on both sides ensure proper electrical grounding throughout your raw water system. O-ring seals at every joining surface eliminate leaks and provide years of leak-free operation.

This strainer suits inboard engines, air conditioning systems, and any raw water cooling application where intake protection matters. The compact footprint (7 x 7 x 12 inches) fits tight engine room installations without requiring extensive plumbing reconfiguration. Installation requires only basic through-hull mounting—no special tools or modifications. Maintenance is straightforward: inspect and rinse the Monel basket monthly in service, replacing the filter element annually or as flow restriction increases. Professional boat builders and retrofit technicians specify GROCO for this exact reason: proven durability, simple serviceability, and the confidence that your cooling system stays clean.