Marine diesel fuel filter cross-reference chart (Kubota / WIX / Baldwin / Fleetguard)
Fuel filter cross-reference for Kubota-based marine diesels (Beta, Nanni, Universal) — the Kubota 15221-43170 spin-on and element filters with WIX, Baldwin, Fleetguard and Donaldson equivalents.
The Kubota fuel filter family
The Kubota blocks under most small marine diesels (Beta, Nanni, Universal — see the base-engine guides) share a small number of fuel filters. As with oil filters, buy the Kubota or aftermarket number rather than the marine-branded box.
Spin-on — Kubota 15221-43170 (M20×1.5, ≈72 mm OD)
The common Kubota spin-on fuel filter, fitted across the D722/D902/D1005/D1105/V1505/V2203/V3300 family and their marine derivatives (Beta 10–35 and up, Nanni and Universal Kubota models).
| Maker | Part № |
|---|---|
| Kubota (genuine) | 15221-43170 |
| WIX | 33390 |
| Baldwin | BF940 |
| Fleetguard | FF5226 |
| Beta Marine (OEM) | 211-60210 |
Element type — Kubota 1G311-43380 (V-series / larger)
Some V-series and larger installations use a filter element rather than a spin-on:
| Maker | Part № |
|---|---|
| Kubota (genuine) | 1G311-43380 |
| WIX | WF10035 |
A related Kubota 05-series filter, 15521-43160, crosses to WIX 33507, Fleetguard FF5103 and Donaldson P502161 (note: 15521-43160 and 15221-43170 are distinct, adjacent Kubota numbers — match yours exactly).
Other base engines
- Lombardini LDW FOCS-series (502/702/1003/1404M): Lombardini
ED0021752630-S→ BaldwinBF790,
Fleetguard FF5040, Mann WK712/2, Donaldson P550345, Hifi SN555.
- Ford Lehman / Sabre (Ford 2700-series): Mann
WK940/6, Sierra18-7853— graded unverified,
confirm before ordering.
Notes
- Diesel primary vs secondary/water-separator filters are different parts — the numbers above are
the on-engine fuel filter, not a Racor-style primary separator.
- Kubota fuel filter numbers supersede over time; an old number and its successor are the same filter.
Match thread and body size to your old filter, and don't mix up the spin-on and element types. See our Methodology. See also the oil filter chart.
This is an independent reference guide. Part numbers are compiled from public and third-party sources and may contain errors — always verify against an official source before ordering. See our Methodology. Browse all guides.