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 element,outer, part number R1401-42270 — Alpine Equipment R1401-42270 ELEMENT,OUTER $32.97 Genuine Kubota filter(fuel,cartridg, part number HH1J0-43172 — Alpine Equipment HH1J0-43172 FILTER(FUEL,CARTRIDG $37.40 Genuine Kubota cartridge,oil filter, part number HH164-32430 — Alpine Equipment HH164-32430 CARTRIDGE,OIL FILTER $13.58 Genuine Kubota tank, reserve assy, part number EG661-72400 — Alpine Equipment EG661-72400 TANK, RESERVE ASSY $92.34 Genuine Kubota cushion, part number 6C040-58580 — Alpine Equipment 6C040-58580 CUSHION $2.59 Genuine Kubota alternator,assy, part number 5H937-42700 — Alpine Equipment 5H937-42700 ALTERNATOR,ASSY $407.20 Genuine Kubota sensor(revolution), part number 5H911-42622 — Alpine Equipment 5H911-42622 SENSOR(REVOLUTION) $51.40 Genuine Kubota sensor,w/temperature, part number 5H601-41940 — Alpine Equipment 5H601-41940 SENSOR,W/TEMPERATURE $63.02 Genuine Kubota element,outer a/c, part number 59800-26110 — Alpine Equipment 59800-26110 ELEMENT,OUTER A/C $28.91 Genuine Kubota assy tank,reserve, part number 48100-58474 — Alpine Equipment 48100-58474 ASSY TANK,RESERVE $104.59 Genuine Kubota assy cover,a/cleaner, part number 3F750-11160 — Alpine Equipment 3F750-11160 ASSY COVER,A/CLEANER $95.67 Genuine Kubota ALTERNATOR(60A), part number 3A613-74010 — Alpine Equipment 3A613-74010 ALTERNATOR(60A) $450.66 Genuine Kubota element,inner, part number 3A111-19130 — Alpine Equipment 3A111-19130 ELEMENT,INNER $43.20 Genuine Kubota stud, part number 38240-36330 — Alpine Equipment 38240-36330 STUD $1.83 Genuine Kubota stud, part number 36530-24920 — Alpine Equipment 36530-24920 STUD $15.09 Genuine Kubota gear,spur 47, part number 35260-37810 — Alpine Equipment 35260-37810 GEAR,SPUR 47 $145.39 Genuine Kubota radiator, assy, part number 1K583-72062 — Alpine Equipment 1K583-72062 RADIATOR, ASSY $1,343.26 Genuine Kubota assy tank,reserve, part number 1K411-72400 — Alpine Equipment 1K411-72400 ASSY TANK,RESERVE $92.34 Genuine Kubota assy starter, part number 1K371-63010 — Alpine Equipment 1K371-63010 ASSY STARTER $678.52 Genuine Kubota gasket,water pump, part number 1K321-73430 — Alpine Equipment 1K321-73430 GASKET,WATER PUMP $5.46 Genuine Kubota assy pump water, part number 1K321-73037 — Alpine Equipment 1K321-73037 ASSY PUMP WATER $168.40 Genuine Kubota bolt flange, part number 1J897-91020 — Alpine Equipment 1J897-91020 BOLT FLANGE $7.18 Genuine Kubota gasket(egr cooler), part number 1J897-17430 — Alpine Equipment 1J897-17430 GASKET(EGR COOLER) $15.82 Genuine Kubota packing, part number 1J864-53620 — Alpine Equipment 1J864-53620 PACKING $1.29 Genuine Kubota bolt(flywheel), part number 1J864-25160 — Alpine Equipment 1J864-25160 BOLT(FLYWHEEL) $20.75 Genuine Kubota gasket, part number 1J860-96650 — Alpine Equipment 1J860-96650 GASKET $0.72 Genuine Kubota glow plug, part number 1J860-65512 — Alpine Equipment 1J860-65512 GLOW PLUG $25.62 Genuine Kubota plug,oil filter, part number 1J860-33140 — Alpine Equipment 1J860-33140 PLUG,OIL FILTER $5.65 Genuine Kubota bushing(idle gear), part number 1J860-24982 — Alpine Equipment 1J860-24982 BUSHING(IDLE GEAR) $41.60 Genuine Kubota pulley, part number 1J829-64110 — Alpine Equipment 1J829-64110 PULLEY $32.18 Genuine Kubota guide,valve(inlet), part number 1J829-13580 — Alpine Equipment 1J829-13580 GUIDE,VALVE(INLET) $9.12 Genuine Kubota guide,valve(exhaust), part number 1J829-13560 — Alpine Equipment 1J829-13560 GUIDE,VALVE(EXHAUST) $10.50 Genuine Kubota seal,oil, part number 1J826-04140 — Alpine Equipment 1J826-04140 SEAL,OIL $11.46 Genuine Kubota catalyst,kit(doc), part number 1J822-18940 — Alpine Equipment 1J822-18940 CATALYST,KIT(DOC) $2,472.96 Genuine Kubota filter,kit(dpf), part number 1J822-18930 — Alpine Equipment 1J822-18930 FILTER,KIT(DPF) $2,450.51 Genuine Kubota SENSOR(THERMO,2), part number 1J822-18520 — Alpine Equipment 1J822-18520 SENSOR(THERMO,2) $254.10 Genuine Kubota valve,assy(egr), part number 1J820-62703 — Alpine Equipment 1J820-62703 VALVE,ASSY(EGR) $793.27 Genuine Kubota tube,assy(over flow), part number 1J820-42500 — Alpine Equipment 1J820-42500 TUBE,ASSY(OVER FLOW) $181.57 Genuine Kubota hose,assy(fuel), part number 1J813-42072 — Alpine Equipment 1J813-42072 HOSE,ASSY(FUEL) $124.82 Genuine Kubota harness,wire,assy(en, part number 1J807-65066 — Alpine Equipment 1J807-65066 HARNESS,WIRE,ASSY(EN $859.63 Genuine Kubota valve,assy(egr), part number 1J807-62703 — Alpine Equipment 1J807-62703 VALVE,ASSY(EGR) $854.70 Genuine Kubota turbocharger,assy, part number 1J807-17010 — Alpine Equipment 1J807-17010 TURBOCHARGER,ASSY $2,562.94 Genuine Kubota valve,assy(egr), part number 1J805-62705 — Alpine Equipment 1J805-62705 VALVE,ASSY(EGR) $820.31 Genuine Kubota catalyst,kit(doc), part number 1J805-18940 — Alpine Equipment 1J805-18940 CATALYST,KIT(DOC) $2,813.09 Genuine Kubota tube pressure 2, part number 1J805-18650 — Alpine Equipment 1J805-18650 TUBE PRESSURE 2 $14.72 Genuine Kubota assy turbocharger, part number 1J805-17012 — Alpine Equipment 1J805-17012 ASSY TURBOCHARGER $2,562.94 Genuine Kubota hose(inlet), part number 1J805-11640 — Alpine Equipment 1J805-11640 HOSE(INLET) $74.55 Genuine Kubota tube 2 breather, part number 1J805-05860 — Alpine Equipment 1J805-05860 TUBE 2 BREATHER $61.75

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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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