Wrench & Acre
CHECKLIST + PARTS + FLUIDS

Kubota BX23S 400-hour service

Know the work. Match the parts. Take the list with you.

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K2892-7121-3 operator manual, original BX23S. North American fluid guidance; normal mineral-diesel schedule. Biodiesel and severe conditions need additional or shorter intervals.

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Service checklist

12 checklist groups

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Source: BX23S / LA340 / BT603 operator manual K2892-7121-3 · pp. 113–114
SERVICE BASKET

Your parts & fluids

6 items in this list

Some part numbers come from dealer catalogs. Check the source and fitment notes before ordering.

Service basket with quantities and purchase options
ItemQuantitySpecification / part numberPurchase
Engine oil filter · original catalogue numberCurrent replacement not confirmed1 eachHH150-32430Original BX23S · dealer catalogue; confirm serialDealer lists this original number, but replacement pages form a cycle between HH1J0-32430 and HH1J0-32432. Ask the dealer to resolve the current number.Confirm the fit using the checkbox above
Engine oil3.3 LOriginal manual: API CF or higher, subject to its listed exclusionsApproximate service capacity, not package count.With filter. SAE 10W-30 or 15W-40 appears across the temperature table; SAE 30 above 25°C, SAE 20 at 0–25°C, SAE 10W below 0°C are also listed. Original North American table lists CF / CF-4 / CG-4 / CH-4 / CI-4 for this engine; explicitly excludes CJ-4. Confirm current approved oil with Kubota.Match fluid specification before ordering
Transmission oil filter1 eachHHK20-36990Original BX23S · dealer catalogue; confirm serialConfirm the fit using the checkbox above
Transmission / hydraulic fluid11.3 LKubota SUPER UDT-2Approximate service capacity, not package count.Shared system. Regular UDT is also permitted in the North American manual; Super UDT-2 is preferred. Filter-only service does not automatically require a full 11.3 L fluid change.Match fluid specification before ordering
Front axle oil3.6 LKubota SUPER UDT-2 or SAE 80–90 gear oilApproximate service capacity, not package count.Separate axle fill; check level after filling.Match fluid specification before ordering
Inline fuel filter2 each12581-43012Original BX23S · dealer catalogue; confirm serialTwo filters are listed in the dealer service kit.Confirm the fit using the checkbox above
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Fluids for this checklist

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BX23S fluid capacities and specifications
SystemCapacitySpecified fluidSource
Engine oil3.3 LOriginal manual: API CF or higher, subject to its listed exclusionsWith filter. SAE 10W-30 or 15W-40 appears across the temperature table; SAE 30 above 25°C, SAE 20 at 0–25°C, SAE 10W below 0°C are also listed. Original North American table lists CF / CF-4 / CG-4 / CH-4 / CI-4 for this engine; explicitly excludes CJ-4. Confirm current approved oil with Kubota.Source: BX23S / LA340 / BT603 operator manual K2892-7121-3 · pp. 27, 115–116
Transmission / hydraulic fluid11.3 LKubota SUPER UDT-2Shared system. Regular UDT is also permitted in the North American manual; Super UDT-2 is preferred. Filter-only service does not automatically require a full 11.3 L fluid change.Source: BX23S / LA340 / BT603 operator manual K2892-7121-3 · pp. 115–116
Front axle oil3.6 LKubota SUPER UDT-2 or SAE 80–90 gear oilSeparate axle fill; check level after filling.Source: BX23S / LA340 / BT603 operator manual K2892-7121-3 · p. 115
All fluid capacities and specifications

Only fluids required by the selected replacement tasks appear in the basket. Grease, cleaning materials, seals, top-ups and inspection-based replacements may be additional.