Moeller's inline marine fuel filters serve different hose sizes and filtration needs. Two disposable 10-micron models use fixed hose barbs, while the 20-micron Clear View version includes multiple barb sizes. This reference puts the three exact part numbers side by side so the filter and hose connections can be checked before ordering.
Barb diameter, micron rating and filter type
Verify the fuel hose inside diameter and the fitting barb. The 5/16-inch and 3/8-inch filter bodies are different MPNs.
Choose the 10- or 20-micron format specified for the engine and fuel system; a micron rating alone does not establish compatibility.
Confirm whether the original is a disposable complete filter or a serviceable filter body with separate elements.
Moeller inline fuel filter MPN comparison
The table identifies hose-barb sizes as published by Moeller. Select by the actual fuel-line dimensions and engine manufacturer's filtration requirements, not solely the visual shape of the clear filter.
| MPN | Filter design | Hose-barb sizes | Rating | Included format |
|---|---|---|---|---|
| 033316-10 | Disposable inline fuel filter | 5/16 in | 10 micron | Complete disposable filter |
| 033317-10 | Disposable inline fuel filter | 3/8 in | 10 micron | Complete disposable filter |
| 033319-10 | Clear View universal inline filter kit | 1/4, 5/16, 3/8 in | 20 micron | Filter assembly and multiple barb sizes |
Where these inline filters should not be installed
Moeller explicitly states this restriction for all three filter models in this comparison. Do not install them on an inboard-engine fuel system. Check the boat and engine manufacturer's specified filter type and safety requirements.
Use approved hose and clamps, follow the specified flow direction, and verify fuel-system leak tightness before returning the vessel to service. A clear filter housing can help with inspection but does not replace scheduled maintenance.
Moeller inline fuel filters
Select the matching product card to review current specifications and availability.
Moeller 033316-10
A clear-body inline filter with fixed 5/16-inch hose barbs for a compatible fuel line.
View filter details and availability
Moeller 033317-10
Same stated filtration rating as 033316-10, but with 3/8-inch hose connections.
View filter details and availability
Moeller 033319-10
A 20-micron clear-view filter kit with three listed barb options; confirm the installed hose size.
View filter details and availabilityRelated marine fuel-system references
Sierra inline fuel filter reference · Moeller portable fuel tank guide
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