GROCO ARG-1250 Series 1-1/4" Raw Water Strainer w/Non-Metallic Plastic Basket

The GROCO ARG-1250 Series 1-1/4" Raw Water Strainer with Non-Metallic Plastic Basket is a purpose-built intake protection system designed to prevent debris, sediment, and foreign material from reaching your engine's cooling circuit. This strainer is critical infrastructure on any boat relying on raw water cooling, whether you're running inshore or offshore. The non-metallic plastic basket variant resists corrosion in saltwater environments where traditional stainless steel or Monel components can suffer galvanic degradation over extended seasons.

The ARG-1250-P incorporates several engineering advantages that reduce maintenance burden and extend service intervals. Its one-piece molded sight glass design eliminates tie rods and gaskets, lowering the risk of leaks at high pressure cycles common in demanding marine duty. O-ring seals at all joining surfaces provide consistent, reliable closure, while the bonding connections on both inlet and outlet sides ensure electrical continuity—critical in saltwater systems to prevent galvanic corrosion of downstream components. The mounting system allows complete basket removal without tools, making strainer cleaning a five-minute job rather than a deck disassembly event. This tool-free access directly translates to more frequent maintenance, which keeps your cooling water flow unrestricted and your engine running at proper temperature.

This strainer fits 1-1/4" sea-cock installations and works across a range of raw water cooling architectures—from smaller auxiliary engines to mid-range inboard systems. The plastic basket option suits boaters operating consistently in salt water where you need maximum corrosion resistance; the improved drain design promotes complete water evacuation during shutdown, reducing standing water that accelerates oxidation. Serious fishermen and cruising boat operators recognize the ARG-1250 as a proven standard for keeping debris out of the cooling loop, protecting your investment through a long season on the water.