40-Micron Inline Filter Canister w/12an Ports

The 40-micron inline filter canister with 12AN ports from Waterman Racing Comp. is a precision fuel system component designed for serious performance builders and high-horsepower applications. Whether you're running a naturally aspirated stroker or a turbo-charged race engine, this canister protects your fuel injectors and pump from particulate contamination that can degrade fuel atomization and increase maintenance intervals. Built for enthusiasts who demand reliability at the track or on the street, this filter addresses a critical gap in fuel system design—the need for effective filtration without sacrificing flow rate or introducing parasitic restrictions.

The 40-micron filtration standard sits at the sweet spot for fuel system protection, trapping rust, scale, and manufacturing debris while allowing sufficient flow for fuel-injected engines operating at fuel rail pressures from 43 to 60+ PSI. The 12AN SAE ports provide a standard aerospace-grade connection point, compatible with braided stainless steel hose and quick-disconnect fittings commonly found in custom fuel systems and aftermarket fuel surge tanks. The compact cylindrical design measures 6.3 × 4.4 × 8.8 inches, weighing just 3.15 pounds, making installation flexible in tight engine bays without compromising structural integrity or requiring complex mounting brackets.

This filter excels in custom fuel system applications where OEM stock filtration is insufficient—particularly in EFI conversions, supercharged builds, and standalone ECU setups where fuel purity directly impacts tune quality and injector longevity. Installation typically occurs downstream of the fuel pump or surge tank but upstream of the fuel rail, using standard 12AN hose clamps and bulkhead fittings. Regular inspection of the cartridge element during seasonal maintenance ensures peak system performance and prevents fuel starvation issues that can occur with heavily contaminated filters in high-demand racing scenarios.