GROCO ARG-1500 Series 1-1/2" Raw Water Strainer w/Stainless Steel Basket

The GROCO ARG-1500 Series 1-1/2" Raw Water Strainer with Stainless Steel Basket is the go-to intake protection system for serious boaters who demand reliability in salt and freshwater environments. This strainer guards your engine's cooling system by capturing sediment, debris, and biological growth before they reach critical cooling passages—a preventative maintenance component that separates weekend fishermen from those who understand long-term engine protection.

Built around a one-piece molded sight glass that eliminates tie rods and gaskets, the ARG-1500 provides both durability and easy serviceability. The stainless steel basket (#304 SS) resists corrosion in saltwater conditions where standard metallic baskets fail. Bonding connections on both sides ensure electrical continuity through the strainer body—critical in saltwater systems where galvanic protection is non-negotiable. The O-ring seal at all joining surfaces prevents bypass leakage that renders a strainer useless. A tool-free mounting system allows quick removal for basket cleaning or replacement without breaking down additional plumbing, and the improved drain plug design simplifies maintenance between haul-outs.

Offshore anglers running extended operations at sea, cruising sailors who depend on passive cooling, and commercial fishing operations all rely on raw water strainers to prevent catastrophic engine failure. The 1-1/2" port size handles standard through-hull intake fittings on mid-range to larger cruising vessels and fishing boats. GROCO's basket options—including Monel and non-metallic alternatives—accommodate different water chemistry scenarios, from tropical saltwater to brackish estuaries. This strainer is engineered for the boats where cooling system failures aren't minor inconveniences; they're reasons your trip ends with a tow.