Convert any Donaldson filter part number to a FONHO replacement. We manufacture direct equivalents for Donaldson P-series fuel, oil, air and hydraulic filters, including the P55xxxx service range — 102 cross references from our catalog are listed below, all produced under IATF 16949:2016 certified processes as an OEM and private-label manufacturer.
P + 6 digits — the main Donaldson part number covering all filter families (e.g. P550428 lube, P551422 fuel, P781466 air);
P55-xxxx — older service-part format for the same elements;
DBL / DBF — Donaldson Blue heavy-duty lube and fuel numbers.
The same element usually also carries an OEM engine number, a Fleetguard number and other brand crosses — our table shows the main crosses, and every FONHO product page lists the full set with dimensions and applications. Search any Donaldson number above, or use our full filter cross reference lookup.
Frequently Asked Questions
Are FONHO replacements equal to Donaldson quality?
Our filters meet or exceed original specifications for filtration efficiency, burst pressure and dust-holding capacity. As an IATF 16949:2016 certified factory we supply fleet and distributor customers with test reports on request. FONHO is an independent manufacturer; all Donaldson numbers are shown for cross-reference identification only.
Do you cover Donaldson air and hydraulic filters too?
Yes — Donaldson P-series air filters (radial seal and safety elements), hydraulic and fuel filters are all cross-referenced in our catalog. Send us the P-number for a verified equivalent.
My Donaldson number is not in the table — can you still supply it?
Very likely. This table lists our fastest-moving Donaldson cross references; our full catalog covers many more applications. Send us the number and we will confirm the equivalent within 24 hours.
Can you produce Donaldson-equivalent filters under our own brand?
Yes — private label is our core business. We handle shell printing, custom packaging and barcoding, with flexible MOQ so wholesalers can mix oil, fuel, air and hydraulic filters in one container. Standard bulk orders ship in 25–35 days.
All brand names and part numbers are trademarks of their respective owners and are used for cross-reference identification only.
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