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 bolt, joint, part number 1J800-95800 — Alpine Equipment 1J800-95800 BOLT, JOINT $59.70 Genuine Kubota stud, part number 1J800-91490 — Alpine Equipment 1J800-91490 STUD $2.38 Genuine Kubota bolt, joint, part number 1J800-95780 — Alpine Equipment 1J800-95780 BOLT, JOINT $9.72 Genuine Kubota gear, supply pump, part number 1J800-51150 — Alpine Equipment 1J800-51150 GEAR, SUPPLY PUMP $116.14 Genuine Kubota cap, part number 1J800-59780 — Alpine Equipment 1J800-59780 CAP $2.14 Genuine Kubota plug, part number 1J800-43410 — Alpine Equipment 1J800-43410 PLUG $22.04 Genuine Kubota stopper, fuel c/shaft, part number 1J800-16320 — Alpine Equipment 1J800-16320 STOPPER, FUEL C/SHAFT $17.20 Genuine Kubota bolt, flange, part number 1J800-91010 — Alpine Equipment 1J800-91010 BOLT, FLANGE $1.93 Genuine Kubota bolt, flange, part number 1J770-91020 — Alpine Equipment 1J770-91020 BOLT, FLANGE $0.41 Genuine Kubota clamp, hose, part number 1J508-05580 — Alpine Equipment 1J508-05580 CLAMP, HOSE $6.81 Genuine Kubota manual, op, part number 1J500-89162 — Alpine Equipment 1J500-89162 MANUAL, OP $46.35 Genuine Kubota manual, op, part number 1J500-89163 — Alpine Equipment 1J500-89163 MANUAL, OP $86.51 Genuine Kubota manual op, part number 1J500-89157 — Alpine Equipment 1J500-89157 MANUAL OP $47.94 Genuine Kubota bag, plastic, part number 1J500-08180 — Alpine Equipment 1J500-08180 BAG, PLASTIC $4.34 Genuine Kubota manifold comp inlet, part number 1J462-11800 — Alpine Equipment 1J462-11800 MANIFOLD COMP INLET $213.30 Genuine Kubota operators manual, part number 1J464-89170 — Alpine Equipment 1J464-89170 OPERATORS MANUAL $46.35 Genuine Kubota manual, instruction, part number 1J464-89169 — Alpine Equipment 1J464-89169 MANUAL, INSTRUCTION $47.94 Genuine Kubota manual instruction, part number 1J464-89165 — Alpine Equipment 1J464-89165 MANUAL INSTRUCTION $47.94 Genuine Kubota air clean, part number 1J454-11570 — Alpine Equipment 1J454-11570 AIR CLEAN $135.89 Genuine Kubota hose inlet, part number 1J453-11640 — Alpine Equipment 1J453-11640 HOSE INLET $139.98 Genuine Kubota nut, cap, assy, part number 1J097-54380 — Alpine Equipment 1J097-54380 NUT, CAP, ASSY $32.67 Genuine Kubota circlip, int, part number 1J094-54280 — Alpine Equipment 1J094-54280 CIRCLIP, INT $0.70 Genuine Kubota manual, inst, part number 1J023-89810 — Alpine Equipment 1J023-89810 MANUAL, INST $23.81 Genuine Kubota manual, inst, part number 1J021-89810 — Alpine Equipment 1J021-89810 MANUAL, INST $3.38 Genuine Kubota manual, inst, part number 1J024-89810 — Alpine Equipment 1J024-89810 MANUAL, INST $23.35 Genuine Kubota manual, inst, part number 1J020-89810 — Alpine Equipment 1J020-89810 MANUAL, INST $22.08 Genuine Kubota manual, inst, part number 1J022-89810 — Alpine Equipment 1J022-89810 MANUAL, INST $21.44 Genuine Kubota manual, inst, part number 1J017-89810 — Alpine Equipment 1J017-89810 MANUAL, INST $22.20 Genuine Kubota manual inst, part number 1J015-89810 — Alpine Equipment 1J015-89810 MANUAL INST $2.52 Genuine Kubota manual, inst, part number 1J019-89810 — Alpine Equipment 1J019-89810 MANUAL, INST $22.20 Genuine Kubota manual, inst, part number 1J018-89810 — Alpine Equipment 1J018-89810 MANUAL, INST $22.20 Genuine Kubota manual inst, part number 1J016-89810 — Alpine Equipment 1J016-89810 MANUAL INST $22.20 Genuine Kubota comp.case gear, part number 1G931-04025 — Alpine Equipment 1G931-04025 COMP.CASE GEAR $649.14 Genuine Kubota cap, part number 1G911-54270 — Alpine Equipment 1G911-54270 CAP $5.95 Genuine Kubota bolt, flywheel, part number 1G916-25160 — Alpine Equipment 1G916-25160 BOLT, FLYWHEEL $16.78 Genuine Kubota shaft, fork lever, part number 1G911-56150 — Alpine Equipment 1G911-56150 SHAFT, FORK LEVER $15.83 Genuine Kubota collar, part number 1G897-37090 — Alpine Equipment 1G897-37090 COLLAR $6.90 Genuine Kubota assy bolt, adjust, part number 1G911-54100 — Alpine Equipment 1G911-54100 ASSY BOLT, ADJUST $6.31 Genuine Kubota nut, part number 1G911-92010 — Alpine Equipment 1G911-92010 NUT $11.42 Genuine Kubota screw, part number 1G896-14230 — Alpine Equipment 1G896-14230 SCREW $2.37 Genuine Kubota case, governor ball, part number 1G896-55690 — Alpine Equipment 1G896-55690 CASE, GOVERNOR BALL $28.64 Genuine Kubota plug, part number 1G896-33610 — Alpine Equipment 1G896-33610 PLUG $1.60 Genuine Kubota sleeve, governor, part number 1G896-55450 — Alpine Equipment 1G896-55450 SLEEVE, GOVERNOR $22.76 Genuine Kubota assy lever, fork, part number 1G866-56052 — Alpine Equipment 1G866-56052 ASSY LEVER, FORK $368.52 Genuine Kubota manifold, exhaust, part number 1G866-12310 — Alpine Equipment 1G866-12310 MANIFOLD, EXHAUST $168.64 Genuine Kubota cover, bearing case, part number 1G851-04813 — Alpine Equipment 1G851-04813 COVER, BEARING CASE $53.34 Genuine Kubota filter, oil, part number 1G850-32110 — Alpine Equipment 1G850-32110 FILTER, OIL $31.00 Genuine Kubota housing, flywheel, part number 1G850-04614 — Alpine Equipment 1G850-04614 HOUSING, FLYWHEEL $1,028.75

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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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