Kubota Filter Cross-Reference Master Chart (Save 30-60%)

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⚡ Quick Answer:

Every Kubota compact tractor runs at least two, and often three, separate filters: engine oil, HST/transmission, and hydraulic. This chart gives you the verified genuine Kubota part number for each system by series (BX, B, L, M). Engine oil filters share one common aftermarket cross-reference — WIX 51365, NAPA Gold 1365, Baldwin B1400, FRAM PH6607, Donaldson P502067 — verified against Baldwin’s own cross-reference catalog. Hydraulic and HST filters don’t have an established name-brand aftermarket the way oil filters do, so those are listed by genuine Kubota part number.

⚠️ Correction notice: An earlier version of this chart listed several oil and air filter part numbers as hydraulic filter cross-references, and paired filters with mismatched automotive lube-filter brands. This page has been rebuilt with verified Kubota part numbers, correctly separated by system.

The confusing part about Kubota filters isn’t finding a part number — it’s finding the right one. Oil, hydraulic, and HST/transmission filters often have similar-looking part numbers, and many parts listings bundle them together without telling you which is which. Get it wrong and you’re not just wasting money — you risk damaging a system that runs under real pressure. This chart keeps every system clearly separated, by series.

🔧 Three Filter Systems, Always Separate

Engine oil filter — filters engine lubricant only
HST/transmission filter — filters the hydrostatic drive circuit
Hydraulic filter — filters the implement/loader circuit; some models add a suction/inlet strainer, typically cleaned rather than replaced

Kubota HST tractors often share one fluid reservoir between transmission and hydraulics — that does NOT mean they share a filter. These are always separate physical parts.

BX Series

Model	Engine Oil	HST/Transmission	Hydraulic
BX1880, BX2380, BX2680	HH150-32430 (current: HH1J0-32430)	HHK20-36990	K2581-36520 (suction strainer, cleaned/OEM only)

B Series

Model	Engine Oil	HST/Transmission	Hydraulic
B2301, B2601, B2650	HH150-32094	HH6F0-36060 (current: supersedes HH660-36060)	HH6C0-37710 (current: supersedes HH670-37710/37712)

L Series

Model	Engine Oil	HST/Transmission	Hydraulic
L2501, L3301, L3901 HST	HH164-32430	HHK70-14073 (current: supersedes HHK70-14070)	HH3A0-82623 (suction strainer, cleaned/OEM only)
L4701, L4701HST	HH164-32430	Uses a related filter family (TC630-93230, TC630-93220, HHTA0-59900, HHTA0-37710) — exact HST vs. hydraulic role not yet confirmed; verify with your parts book
L5740	HH164-32430	Hydraulic/HST filter not yet confirmed — verify with your parts book

M Series

Model	Engine Oil	Hydraulic
M5040	HH1C0-32430	HHTA0-37710 (spin-on)
M6040	HH1C0-32430	HHTA0-37710 (spin-on); HH3A0-82623 also referenced for this model
M7040	HH1C0-32430	HHTA0-37710 (spin-on) + HH3A0-82623 (suction/inlet) — two-filter system
M5-111	HH1C0-32430	HHTA0-37710
M6060, M7060	HH1C0-32430	HHTA0-37710

M6-141 hydraulic/HST filter not yet confirmed — verify with your parts book.

🛒 Verified Filters — Direct Links

WIX 51365 — Engine Oil Filter

Cross to Kubota HH150-32430/HH150-32094/HH164-32430 family — verified via Baldwin’s cross-reference catalog

View on Amazon

NAPA Gold 1365 — Engine Oil Filter

Manufactured by WIX, identical internals to 51365

View on Amazon

Baldwin B1400 — Engine Oil Filter

OEM-supplier grade, verified cross to the same filter family

View on Amazon

FRAM PH6607 — Engine Oil Filter

Widest availability, verified cross to the same filter family

View on Amazon

Donaldson P502067 — Engine Oil Filter

Industrial-grade, best for high-hour or commercial use

View on Amazon

HHK20-36990 — BX Series HST/Transmission Filter

BX1880, BX2380, BX2680 — genuine Kubota part

View on Amazon

HHK70-14073 — L Series HST/Transmission Filter

L2501 HST, L3301 HST, L3901 HST — genuine Kubota part

View on Amazon

As an Amazon Associate, TractorPartsCentral earns from qualifying purchases. B/L-series HST and hydraulic filters (HH6F0-36060, HH6C0-37710, HH3A0-82623) and M-series hydraulic filters (HHTA0-37710) don’t have a confirmed name-brand Amazon listing yet — order by Kubota part number through a dealer or search the exact part number directly.

Fuel and air filters coming soon

We’re still verifying fuel and air filter part numbers against genuine Kubota parts diagrams before publishing them here — we’d rather leave this section blank a little longer than list unverified numbers. Check back soon, or see our other filter guides below in the meantime.

How to Change a Filter Correctly

Confirm which filter you’re changing and relieve system pressure if it’s hydraulic — cycle loader/3-point controls through full range with the engine off first.

Position a drain pan and remove the old filter counterclockwise with a strap wrench.

Clean the mounting base and confirm the old gasket came off with the filter — double-gasketing is the most common cause of leaks.

Pre-fill the new filter with clean fluid where possible and lightly oil the gasket before installing.

Hand-tighten plus 3/4 turn, top off fluid, run the engine briefly, then check for leaks before putting the tractor back to work.

This chart covers every Kubota compact tractor’s engine oil, HST/transmission, and hydraulic filter systems, verified against genuine Kubota part numbers rather than marketplace guesswork. For a deeper walkthrough on any one system, see our Tractor Oil Filter Cross-Reference Guide or Hydraulic Filter Cross-Reference Guide. For more DIY guides visit TractorPartsCentral.com.

? Frequently Asked Questions

Do my hydraulic and HST filters share the same fluid, so can I use the same filter for both?

No. Many Kubota HST tractors share one fluid reservoir between the transmission and hydraulics, but they always use separate physical filters. Confirm the exact part number for each system before ordering.

Will using aftermarket oil filters void my tractor warranty?

No. Under the Magnuson-Moss Warranty Act, manufacturers cannot void your warranty simply for using a quality aftermarket filter that meets required specifications — they must prove the filter caused the failure before denying coverage.

Why don’t hydraulic filters have Baldwin/WIX/Donaldson cross-references like oil filters do?

Engine oil filters have a mature automotive-derived aftermarket. Kubota’s ag hydraulic and HST filters largely don’t have that same ecosystem — the realistic alternative is a direct-replacement filter sold under the same Kubota part number rather than a name-brand cross. Genuine Kubota parts remain the most reliably verified option for these systems.

My model isn’t listed — what should I do?

Check your operator’s manual or a genuine Kubota parts diagram for your exact model and serial number. Kubota supersedes part numbers over time, and similar-looking models within the same series can use different filters.

Related Kubota Filter & Maintenance Guides

Tractor Oil Filter Cross-Reference Guide →

Verified Baldwin, WIX, FRAM, NAPA equivalents, all brands

Hydraulic Filter Cross-Reference Guide →

Full hydraulic/HST breakdown with install steps

Kubota Hydraulic Fluid Change Guide →

Step-by-step fluid change procedure

Kubota Transmission Fluid Change Guide →

Full drain, filter, and refill procedure

Kubota Oil Change Interval Guide →

Model-specific service intervals

Kubota Loader Drift Troubleshooting →

Diagnose slow loader lift after service

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