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.

☎ Call for Pricing — (801) 701-7394 Request a Quote
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 assy cup,filter, part number 1G311-43100 — Alpine Equipment 1G311-43100 ASSY CUP,FILTER $28.24 Genuine Kubota cir-clip,internal, part number 1G279-21330 — Alpine Equipment 1G279-21330 CIR-CLIP,INTERNAL $3.37 Genuine Kubota shutoff-valve(drain), part number 1G171-73020 — Alpine Equipment 1G171-73020 SHUTOFF-VALVE(DRAIN) $16.95 Genuine Kubota sensor(revolution), part number 1G171-59660 — Alpine Equipment 1G171-59660 SENSOR(REVOLUTION) $50.24 Genuine Kubota seal,oil, part number 1EA12-04460 — Alpine Equipment 1EA12-04460 SEAL,OIL $21.21 Genuine Kubota packing, part number 1E886-53620 — Alpine Equipment 1E886-53620 PACKING $0.98 Genuine Kubota filter assy, part number 1E789-43350 — Alpine Equipment 1E789-43350 FILTER ASSY $454.35 Genuine Kubota filter ws, part number 1E786-43060 — Alpine Equipment 1E786-43060 FILTER WS $73.48 Genuine Kubota switch assy, part number 1E752-43880 — Alpine Equipment 1E752-43880 SWITCH ASSY $198.22 Genuine Kubota harness,wire,assy, part number 1E696-65034 — Alpine Equipment 1E696-65034 HARNESS,WIRE,ASSY $3,700.07 Genuine Kubota harness,wire,assy, part number 1E694-65043 — Alpine Equipment 1E694-65043 HARNESS,WIRE,ASSY $176.25 Genuine Kubota harness,wire,assy, part number 1E694-65034 — Alpine Equipment 1E694-65034 HARNESS,WIRE,ASSY $3,700.07 Genuine Kubota cleaner air assy, part number 1E549-11013 — Alpine Equipment 1E549-11013 CLEANER AIR ASSY $506.87 Genuine Kubota harness,wire,assy(en, part number 1E531-65064 — Alpine Equipment 1E531-65064 HARNESS,WIRE,ASSY(EN $1,321.35 Genuine Kubota heater, part number 1E475-05750 — Alpine Equipment 1E475-05750 HEATER $208.54 Genuine Kubota stay dynamo, part number 1E466-64420 — Alpine Equipment 1E466-64420 STAY DYNAMO $47.50 Genuine Kubota harness,wire,assy(en, part number 1E461-65064 — Alpine Equipment 1E461-65064 HARNESS,WIRE,ASSY(EN $1,586.26 Genuine Kubota flange muffler, part number 1E457-12322 — Alpine Equipment 1E457-12322 FLANGE MUFFLER $208.05 Genuine Kubota bracket, part number 1E441-11250 — Alpine Equipment 1E441-11250 BRACKET $78.03 Genuine Kubota harness,wire,assy, part number 1E426-65076 — Alpine Equipment 1E426-65076 HARNESS,WIRE,ASSY $278.69 Genuine Kubota gasket gear, part number 1E426-04130 — Alpine Equipment 1E426-04130 GASKET GEAR $26.36 Genuine Kubota comp flange water, part number 1E417-72700 — Alpine Equipment 1E417-72700 COMP FLANGE WATER $153.06 Genuine Kubota body,kit, part number 1E417-18950 — Alpine Equipment 1E417-18950 BODY,KIT $554.54 Genuine Kubota thermostat,assy, part number 1E401-73012 — Alpine Equipment 1E401-73012 THERMOSTAT,ASSY $30.87 Genuine Kubota alternator stay, part number 1E309-64350 — Alpine Equipment 1E309-64350 ALTERNATOR STAY $31.17 Genuine Kubota cover thermostat, part number 1E282-73260 — Alpine Equipment 1E282-73260 COVER THERMOSTAT $30.38 Genuine Kubota assy pump,water, part number 1E141-73035 — Alpine Equipment 1E141-73035 ASSY PUMP,WATER $168.60 Genuine Kubota hose,water, part number 1E140-72850 — Alpine Equipment 1E140-72850 HOSE,WATER $33.50 Genuine Kubota assy pump,oil, part number 1E013-35013 — Alpine Equipment 1E013-35013 ASSY PUMP,OIL $120.09 Genuine Kubota assy coupler, part number 1C010-65830 — Alpine Equipment 1C010-65830 ASSY COUPLER $13.35 Genuine Kubota cover, part number 1C010-56750 — Alpine Equipment 1C010-56750 COVER $2.17 Genuine Kubota PIPE,COMP(PRESSURE,2, part number 1A332-18630 — Alpine Equipment 1A332-18630 PIPE,COMP(PRESSURE,2 $19.60 Genuine Kubota harness,wire,assy(en, part number 1A286-65066 — Alpine Equipment 1A286-65066 HARNESS,WIRE,ASSY(EN $932.41 Genuine Kubota metal,side 2, 02, part number 1A091-23970 — Alpine Equipment 1A091-23970 METAL,SIDE 2, 02 $28.17 Genuine Kubota metal,side 1, 02, part number 1A091-23950 — Alpine Equipment 1A091-23950 METAL,SIDE 1, 02 $29.16 Genuine Kubota METAL,2.C/SHAFT.04, part number 1A091-23940 — Alpine Equipment 1A091-23940 METAL,2.C/SHAFT.04 $40.98 Genuine Kubota METAL,2.C/SHAFT.02, part number 1A091-23930 — Alpine Equipment 1A091-23930 METAL,2.C/SHAFT.02 $39.57 Genuine Kubota METAL,1.C/SHAFT.02, part number 1A091-23910 — Alpine Equipment 1A091-23910 METAL,1.C/SHAFT.02 $40.98 Genuine Kubota metal,side 2, part number 1A091-23542 — Alpine Equipment 1A091-23542 METAL,SIDE 2 $25.60 Genuine Kubota metal,side 1, part number 1A091-23532 — Alpine Equipment 1A091-23532 METAL,SIDE 1 $25.60 Genuine Kubota METAL,2.CRANKSHAFT, part number 1A091-23482 — Alpine Equipment 1A091-23482 METAL,2.CRANKSHAFT $36.17 Genuine Kubota METAL,1.CRANKSHAFT, part number 1A091-23472 — Alpine Equipment 1A091-23472 METAL,1.CRANKSHAFT $40.22 Genuine Kubota assy piston ring, part number 1A091-21054 — Alpine Equipment 1A091-21054 ASSY PISTON RING $95.03 Genuine Kubota push rod, part number 1A091-15110 — Alpine Equipment 1A091-15110 PUSH ROD $7.78 Genuine Kubota gasket,case cover na, part number 1A091-04820 — Alpine Equipment 1A091-04820 GASKET,CASE COVER NA $6.45 Genuine Kubota gasket,bearing case, part number 1A091-04362 — Alpine Equipment 1A091-04362 GASKET,BEARING CASE $10.90 Genuine Kubota bracket,accel.cable, part number 1A053-57482 — Alpine Equipment 1A053-57482 BRACKET,ACCEL.CABLE $10.96 Genuine Kubota gasket,water pump, part number 1A051-73430 — Alpine Equipment 1A051-73430 GASKET,WATER PUMP $9.30

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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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