GROCO BM-11 Monel Basket - 3.1" x 15.4"

The GROCO BM-11 Monel Basket is a marine-grade replacement strainer component engineered for raw water intake systems aboard vessels of all sizes. This 3.1" x 15.4" basket serves as the primary filtration element in through-hull strainers, protecting engines, cooling systems, and seawater equipment from debris, sediment, and biological fouling. Whether you operate a sailboat, powerboat, or commercial marine installation, maintaining a clean strainer basket is critical to engine longevity and system reliability.

Constructed from high-strength Monel—a nickel-copper alloy renowned for superior corrosion resistance in saltwater environments—the BM-11 basket withstands years of exposure to harsh marine conditions without degradation or material failure. The improved handle design enables quick removal and cleaning without requiring tools, reducing maintenance downtime and improving operator safety. Monel's exceptional strength-to-weight ratio ensures the basket retains its structural integrity under pressure differential, preventing collapse or bypass that could compromise system protection.

This replacement basket fits a range of standard pipe sizes and integrates seamlessly into existing GROCO through-hull strainer housings. Marine engineers and boat maintenance professionals rely on OEM-specification Monel baskets to ensure filter media performs at rated micron levels and maintains pressure drop within design parameters. Regular basket inspection and cleaning—typically every 50 to 100 operating hours—prevents strainer clogging and maintains steady coolant flow to heat exchangers and auxiliary systems.