Description
Contaminated fuel is the silent killer of high-performance engines—dirt and debris in your fuel system lead to clogged injectors, worn fuel pumps, and erratic engine behavior. The Moroso In-Line Fuel Filter with its 40-micron stainless steel element removes particles before they reach your engine, protecting your investment and maintaining consistent fuel delivery. Built with a reusable, washable design, this filter delivers long-term value without compromising flow or requiring frequent replacements.
Designed for carbureted and low-pressure fuel systems, the 65231 features a lightweight aluminum housing with black anodized protection against corrosion. The removable, O-ringed end caps make cleaning quick and straightforward—simply rinse the stainless steel element and reinstall. With 3/8-inch NPT female fittings, it integrates seamlessly into most fuel lines. At just over 5 inches in length, it fits tight engine bays while delivering the filtration precision your high-performance build demands.
- Filter Micron Rating: 40 microns
- Filter Element: Stainless steel screen
- Housing Material: Aluminum
- Housing Finish: Black anodized
- Inlet/Outlet: 3/8″ NPT female
- Overall Length: 5-1/8″
- Filter Type: Washable, reusable
- Installation: Bolt-on, universal fit
- Not Recommended: High-pressure EFI systems
- Moroso MPN: 65231






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