Kubota D1803 Engine Parts

Alpine Equipment stocks OEM and aftermarket parts for the Kubota D1803 engine — filters, gaskets, seals, pumps, water pumps, injectors, and complete rebuild components. Same-day shop pickup in Utah County; nationwide shipping.

Need pricing on a complete D1803 engine or a full rebuild? Call our factory-certified Kubota team at (801) 701-7394.

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Kubota D1803 diesel engine — genuine parts from Alpine Equipment Repair
  • Cylinders3
  • Displacement111.4 cu.in.
  • Bore & Stroke3.43 x 4.031 in
  • Rated Output37.4–56.3 HP
  • Max Torque85.3–134.8 lb-ft
  • AspirationNaturally aspirated / Turbocharged / Turbocharged + Turbo After Cooler
  • Dry Weight333–469 lbs

Specs vary by engine variant/spec code. Confirm fitment by part number or call us.

Kubota D1803 Manuals & Parts Diagrams

Official Kubota parts lists and service-data reference for this model. Use them to find the exact part number or spec, then search or call to order. Or browse the full Kubota manual library.

Illustrated Parts Lists

Service Data

D1803 Engine Parts (878 parts)

Genuine Kubota gasket(inlet flange), part number 1J800-05700 — Alpine Equipment 1J800-05700 GASKET(INLET FLANGE) $3.18 Genuine Kubota SENSOR(THERMO,2), part number 1J770-18520 — Alpine Equipment 1J770-18520 SENSOR(THERMO,2) $271.49 Genuine Kubota element,kit, part number 1J770-05810 — Alpine Equipment 1J770-05810 ELEMENT,KIT $88.61 Genuine Kubota o-ring, part number 1J770-05130 — Alpine Equipment 1J770-05130 O-RING $9.98 Genuine Kubota separator,assy, part number 1J770-05030 — Alpine Equipment 1J770-05030 SEPARATOR,ASSY $278.39 Genuine Kubota clamp,hose, part number 1J700-71593 — Alpine Equipment 1J700-71593 CLAMP,HOSE $9.86 Genuine Kubota bolt,connecting rod, part number 1J700-22140 — Alpine Equipment 1J700-22140 BOLT,CONNECTING ROD $2.67 Genuine Kubota bolt,stud, part number 1J530-91530 — Alpine Equipment 1J530-91530 BOLT,STUD $18.30 Genuine Kubota sensor, part number 1J520-18600 — Alpine Equipment 1J520-18600 SENSOR $255.55 Genuine Kubota sensor, part number 1J520-10700 — Alpine Equipment 1J520-10700 SENSOR $351.37 Genuine Kubota SENSOR(THERMO,1), part number 1J500-18510 — Alpine Equipment 1J500-18510 SENSOR(THERMO,1) $237.30 Genuine Kubota muffler assy doc, part number 1J497-18102 — Alpine Equipment 1J497-18102 MUFFLER ASSY DOC $6,480.03 Genuine Kubota cleaner air assy, part number 1J497-11012 — Alpine Equipment 1J497-11012 CLEANER AIR ASSY $469.45 Genuine Kubota band air cleaner, part number 1J461-11250 — Alpine Equipment 1J461-11250 BAND AIR CLEANER $141.24 Genuine Kubota cleaner air assy, part number 1J461-11012 — Alpine Equipment 1J461-11012 CLEANER AIR ASSY $429.92 Genuine Kubota filter,assy(fuel), part number 1J456-43012 — Alpine Equipment 1J456-43012 FILTER,ASSY(FUEL) $139.68 Genuine Kubota assy,air cleaner, part number 1J456-11013 — Alpine Equipment 1J456-11013 ASSY,AIR CLEANER $469.45 Genuine Kubota o-ring, part number 1J451-35460 — Alpine Equipment 1J451-35460 O-RING $2.18 Genuine Kubota switch,assy, part number 1J430-43880 — Alpine Equipment 1J430-43880 SWITCH,ASSY $174.57 Genuine Kubota filter,assy(w,separa, part number 1J430-43350 — Alpine Equipment 1J430-43350 FILTER,ASSY(W,SEPARA $464.91 Genuine Kubota filter, part number 1J430-43060 — Alpine Equipment 1J430-43060 FILTER $37.55 Genuine Kubota pump,assy(fuel), part number 1J351-52030 — Alpine Equipment 1J351-52030 PUMP,ASSY(FUEL) $145.91 Genuine Kubota ECU,SUB-ASSY(03-OEM), part number 1H030-59092 — Alpine Equipment 1H030-59092 ECU,SUB-ASSY(03-OEM) $3,311.05 Genuine Kubota assy pump,fuel, part number 1G938-52034 — Alpine Equipment 1G938-52034 ASSY PUMP,FUEL $151.03 Genuine Kubota rubber, part number 1G932-72180 — Alpine Equipment 1G932-72180 RUBBER $2.32 Genuine Kubota tube,breather, part number 1G930-05513 — Alpine Equipment 1G930-05513 TUBE,BREATHER $30.15 Genuine Kubota assy thermostat, part number 1G924-73012 — Alpine Equipment 1G924-73012 ASSY THERMOSTAT $33.96 Genuine Kubota bearing,ball, part number 1G924-51750 — Alpine Equipment 1G924-51750 BEARING,BALL $37.97 Genuine Kubota TUBE(OIL,4), part number 1G924-33240 — Alpine Equipment 1G924-33240 TUBE(OIL,4) $8.65 Genuine Kubota o ring, part number 1G924-05430 — Alpine Equipment 1G924-05430 O RING $4.99 Genuine Kubota bolt, part number 1G923-91010 — Alpine Equipment 1G923-91010 BOLT $2.99 Genuine Kubota bolt, part number 1G911-91022 — Alpine Equipment 1G911-91022 BOLT $3.09 Genuine Kubota valve,fuel check, part number 1G911-42462 — Alpine Equipment 1G911-42462 VALVE,FUEL CHECK $61.81 Genuine Kubota comp valve,breather, part number 1G911-05203 — Alpine Equipment 1G911-05203 COMP VALVE,BREATHER $47.54 Genuine Kubota base,oil filter, part number 1G905-32610 — Alpine Equipment 1G905-32610 BASE,OIL FILTER $74.35 Genuine Kubota valve,exhaust, part number 1G897-13124 — Alpine Equipment 1G897-13124 VALVE,EXHAUST $24.24 Genuine Kubota valve,inlet, part number 1G897-13114 — Alpine Equipment 1G897-13114 VALVE,INLET $26.21 Genuine Kubota gasket, part number 1G896-96650 — Alpine Equipment 1G896-96650 GASKET $1.08 Genuine Kubota bolt,eye(joint), part number 1G896-51320 — Alpine Equipment 1G896-51320 BOLT,EYE(JOINT) $7.21 Genuine Kubota tube assy,fuel, part number 1G896-42502 — Alpine Equipment 1G896-42502 TUBE ASSY,FUEL $2.40 Genuine Kubota packing, part number 1G896-37072 — Alpine Equipment 1G896-37072 PACKING $15.94 Genuine Kubota cooler,oil,assy, part number 1G896-37012 — Alpine Equipment 1G896-37012 COOLER,OIL,ASSY $592.20 Genuine Kubota gear,oil pump drive, part number 1G896-35660 — Alpine Equipment 1G896-35660 GEAR,OIL PUMP DRIVE $33.52 Genuine Kubota cap(valve), part number 1G896-13280 — Alpine Equipment 1G896-13280 CAP(VALVE) $2.92 Genuine Kubota spring,valve, part number 1G896-13240 — Alpine Equipment 1G896-13240 SPRING,VALVE $12.07 Genuine Kubota seal,oil, part number 1G896-04140 — Alpine Equipment 1G896-04140 SEAL,OIL $11.76 Genuine Kubota shim,injection, part number 1G866-52200 — Alpine Equipment 1G866-52200 SHIM,INJECTION $4.49 Genuine Kubota bearing,ball, part number 1G861-97300 — Alpine Equipment 1G861-97300 BEARING,BALL $47.54

More Kubota Engine Parts

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Need pricing on a Kubota D1803 engine or a rebuild?

We sell, exchange, and rebuild Kubota engines — and stock the parts to keep yours running. Call or send a quote request.

(801) 701-7394

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