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 gear pump drive, part number T0430-38630 — Alpine Equipment T0430-38630 GEAR PUMP DRIVE $173.86 Genuine Kubota bracket(v band,dpf), part number 1J813-18800 — Alpine Equipment 1J813-18800 BRACKET(V BAND,DPF) $204.47 Genuine Kubota SENSOR(THERMO,2), part number 1J801-18520 — Alpine Equipment 1J801-18520 SENSOR(THERMO,2) $271.49 Genuine Kubota sensor,assy(crankang, part number 1J800-59770 — Alpine Equipment 1J800-59770 SENSOR,ASSY(CRANKANG $170.00 Genuine Kubota nut,flange, part number 1J542-92500 — Alpine Equipment 1J542-92500 NUT,FLANGE $1.48 Genuine Kubota SENSOR(THERMO,0), part number 1J500-18500 — Alpine Equipment 1J500-18500 SENSOR(THERMO,0) $237.30 Genuine Kubota float, part number 1G311-43250 — Alpine Equipment 1G311-43250 FLOAT $3.50 Genuine Kubota seal,oil, part number 16691-57980 — Alpine Equipment 16691-57980 SEAL,OIL $6.04 Genuine Kubota bolt,flange, part number 01754-50640 — Alpine Equipment 01754-50640 BOLT,FLANGE $1.92 Genuine Kubota rotor, part number TA044-64040 — Alpine Equipment TA044-64040 ROTOR $206.06 Genuine Kubota frame, part number TA043-64060 — Alpine Equipment TA043-64060 FRAME $134.16 Genuine Kubota frame, drive end, part number TA043-74032 — Alpine Equipment TA043-74032 FRAME, DRIVE END $613.95 Genuine Kubota holder, rectifier, part number TA043-64850 — Alpine Equipment TA043-64850 HOLDER, RECTIFIER $246.83 Genuine Kubota clip, part number T1060-30540 — Alpine Equipment T1060-30540 CLIP $3.12 Genuine Kubota rotor, part number TA043-64040 — Alpine Equipment TA043-64040 ROTOR $395.36 Genuine Kubota assy frame drive, part number T1060-15622 — Alpine Equipment T1060-15622 ASSY FRAME DRIVE $405.35 Genuine Kubota clamp, hose, part number RD809-63100 — Alpine Equipment RD809-63100 CLAMP, HOSE $10.25 Genuine Kubota cup, dust, part number R1401-42260 — Alpine Equipment R1401-42260 CUP, DUST $79.53 Genuine Kubota cover(fuel camshaft), part number EG543-16212 — Alpine Equipment EG543-16212 COVER(FUEL CAMSHAFT) $26.74 Genuine Kubota rotor, part number 6C782-64040 — Alpine Equipment 6C782-64040 ROTOR $354.16 Genuine Kubota sleeve, part number 68271-65920 — Alpine Equipment 68271-65920 SLEEVE $1.58 Genuine Kubota rotor, part number 66436-64040 — Alpine Equipment 66436-64040 ROTOR $329.11 Genuine Kubota terminal 1, part number 68271-65910 — Alpine Equipment 68271-65910 TERMINAL 1 $1.58 Genuine Kubota cap, nipple, part number 58819-25430 — Alpine Equipment 58819-25430 CAP, NIPPLE $13.68 Genuine Kubota ALTERNATOR(60A), part number 3A611-74014 — Alpine Equipment 3A611-74014 ALTERNATOR(60A) $427.36 Genuine Kubota bearing, ball(radial), part number 36920-40030 — Alpine Equipment 36920-40030 BEARING, BALL(RADIAL) $19.38 Genuine Kubota assy regulator, part number 1K531-64602 — Alpine Equipment 1K531-64602 ASSY REGULATOR $352.76 Genuine Kubota bolt, part number 1K976-91012 — Alpine Equipment 1K976-91012 BOLT $6.08 Genuine Kubota cover, part number 31220-14170 — Alpine Equipment 31220-14170 COVER $5.53 Genuine Kubota assy regulator, part number 1K531-64603 — Alpine Equipment 1K531-64603 ASSY REGULATOR $364.24 Genuine Kubota gear, crankshaft, part number 1K321-24110 — Alpine Equipment 1K321-24110 GEAR, CRANKSHAFT $120.43 Genuine Kubota bolt, part number 1J866-64380 — Alpine Equipment 1J866-64380 BOLT $2.26 Genuine Kubota comp.pipe(water, egr), part number 1J860-71010 — Alpine Equipment 1J860-71010 COMP.PIPE(WATER, EGR) $27.12 Genuine Kubota gasket, part number 1J866-57210 — Alpine Equipment 1J866-57210 GASKET $1.16 Genuine Kubota bearing, ball, part number 1J860-51750 — Alpine Equipment 1J860-51750 BEARING, BALL $28.13 Genuine Kubota bolt assy adjusting, part number 1J866-54350 — Alpine Equipment 1J866-54350 BOLT ASSY ADJUSTING $10.54 Genuine Kubota collar, idle gear, part number 1J854-24370 — Alpine Equipment 1J854-24370 COLLAR, IDLE GEAR $43.49 Genuine Kubota bolt(adjusting), part number 1J866-54120 — Alpine Equipment 1J866-54120 BOLT(ADJUSTING) $6.21 Genuine Kubota head, cylinder, comp, part number 1J820-03040 — Alpine Equipment 1J820-03040 HEAD, CYLINDER, COMP $1,467.66 Genuine Kubota head, cylinder, comp, part number 1J820-03043 — Alpine Equipment 1J820-03043 HEAD, CYLINDER, COMP $1,467.66 Genuine Kubota lever, engine stop, part number 1J818-57720 — Alpine Equipment 1J818-57720 LEVER, ENGINE STOP $22.26 Genuine Kubota lever, comp(engine st, part number 1J818-57710 — Alpine Equipment 1J818-57710 LEVER, COMP(ENGINE ST $24.83 Genuine Kubota lever, assy(engine st, part number 1J818-57700 — Alpine Equipment 1J818-57700 LEVER, ASSY(ENGINE ST $97.28 Genuine Kubota gear, comp(idle), part number 1J854-24012 — Alpine Equipment 1J854-24012 GEAR, COMP(IDLE) $322.59 Genuine Kubota seat, valve(inlet), part number 1J812-13620 — Alpine Equipment 1J812-13620 SEAT, VALVE(INLET) $4.49 Genuine Kubota packing(x-ring), part number 1J818-96940 — Alpine Equipment 1J818-96940 PACKING(X-RING) $3.13 Genuine Kubota seat, valve(exhaust), part number 1J812-13610 — Alpine Equipment 1J812-13610 SEAT, VALVE(EXHAUST) $4.49 Genuine Kubota hose, part number 1J804-71460 — Alpine Equipment 1J804-71460 HOSE $58.40

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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