GROCO ARG-750 Series 3/4" Raw Water Strainer w/Monel Basket

The GROCO ARG-750 Series 3/4" Raw Water Strainer with Monel Basket is essential protection for any serious cruiser or fishing vessel relying on raw water cooling systems. After years running marine engines through saltwater and brackish environments, you know that debris—sand, kelp, small shells, and sediment—can devastate your cooling system in minutes. This strainer sits between your through-hull and engine intake, capturing contaminants before they reach your raw water pump and heat exchanger, preventing costly repairs and unexpected breakdowns on the water.

Built from corrosion-resistant materials, the ARG-750 features a Monel basket that withstands prolonged exposure to saltwater without degrading—Monel's superior corrosion resistance far exceeds standard stainless steel in marine environments. The strainer body incorporates bonding connections on both inlet and outlet sides, ensuring proper electrical continuity and cathodic protection integration in your system. An O-ring seal at all joining surfaces prevents weeping and maintains watertight integrity under operating pressures, while the tool-free removal mounting system allows you to service or replace the basket without breaking out wrenches—critical when you're underway and need fast maintenance access.

This strainer is ideal for retrofit installations and new builds using 3/4" through-hull fittings common on mid-sized cruisers, fishing boats, and auxiliary power systems. The compact 5 x 5 x 10-inch footprint fits easily in tight engine compartments without requiring extensive plumbing reconfiguration. Whether you're running extended offshore passages or day-tripping in coastal inlets, the ARG-750 delivers the reliability and low-maintenance operation you expect from GROCO's marine engineering—backed by decades of field-proven performance in commercial and recreational fleets.