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 pulley, fan, part number 15471-74250 — Alpine Equipment 15471-74250 PULLEY, FAN $50.87 Genuine Kubota collar, part number 15469-83540 — Alpine Equipment 15469-83540 COLLAR $20.62 Genuine Kubota cir clip, internal, part number 15469-95470 — Alpine Equipment 15469-95470 CIR CLIP, INTERNAL $30.33 Genuine Kubota cir-clip, external, part number 15451-95400 — Alpine Equipment 15451-95400 CIR-CLIP, EXTERNAL $5.23 Genuine Kubota shaft, idle gear, part number 15469-83520 — Alpine Equipment 15469-83520 SHAFT, IDLE GEAR $85.63 Genuine Kubota base, o/p pump, part number 15469-83130 — Alpine Equipment 15469-83130 BASE, O/P PUMP $348.18 Genuine Kubota collar, part number 15469-83160 — Alpine Equipment 15469-83160 COLLAR $12.60 Genuine Kubota cover, gear case, part number 15469-04150 — Alpine Equipment 15469-04150 COVER, GEAR CASE $148.26 Genuine Kubota pipe, water return, part number 15321-73340 — Alpine Equipment 15321-73340 PIPE, WATER RETURN $6.84 Genuine Kubota joint, drain cock, part number 15291-73160 — Alpine Equipment 15291-73160 JOINT, DRAIN COCK $13.20 Genuine Kubota clip, pipe, part number 15271-42710 — Alpine Equipment 15271-42710 CLIP, PIPE $1.44 Genuine Kubota bolt, flywheel, part number 15321-25163 — Alpine Equipment 15321-25163 BOLT, FLYWHEEL $18.01 Genuine Kubota cover, fuel camshaft, part number 15225-16214 — Alpine Equipment 15225-16214 COVER, FUEL CAMSHAFT $44.09 Genuine Kubota cover, part number 15223-83340 — Alpine Equipment 15223-83340 COVER $6.57 Genuine Kubota bolt, part number 15221-66410 — Alpine Equipment 15221-66410 BOLT $17.32 Genuine Kubota cir-clip, gov. b.case, part number 15221-55740 — Alpine Equipment 15221-55740 CIR-CLIP, GOV. B.CASE $0.71 Genuine Kubota bracket, rocker arm, part number 15221-14353 — Alpine Equipment 15221-14353 BRACKET, ROCKER ARM $25.10 Genuine Kubota washer, roc/arm.shaft, part number 15221-14430 — Alpine Equipment 15221-14430 WASHER, ROC/ARM.SHAFT $0.25 Genuine Kubota stopper, camshaft, part number 15221-16270 — Alpine Equipment 15221-16270 STOPPER, CAMSHAFT $18.57 Genuine Kubota holder, fork lever, part number 15221-56230 — Alpine Equipment 15221-56230 HOLDER, FORK LEVER $52.32 Genuine Kubota spring, rocker arm, part number 15221-14310 — Alpine Equipment 15221-14310 SPRING, ROCKER ARM $0.93 Genuine Kubota hook, engine, part number 15221-01750 — Alpine Equipment 15221-01750 HOOK, ENGINE $4.70 Genuine Kubota cir-clip, gov. sleeve, part number 15221-55470 — Alpine Equipment 15221-55470 CIR-CLIP, GOV. SLEEVE $0.57 Genuine Kubota plug, drain, part number 15109-33630 — Alpine Equipment 15109-33630 PLUG, DRAIN $8.74 Genuine Kubota nut, part number 15021-14240 — Alpine Equipment 15021-14240 NUT $2.18 Genuine Kubota assy pipe, fuel, part number 14681-42014 — Alpine Equipment 14681-42014 ASSY PIPE, FUEL $6.31 Genuine Kubota pipe, fuel, part number 14681-42174 — Alpine Equipment 14681-42174 PIPE, FUEL $6.75 Genuine Kubota nut, part number 13963-92010 — Alpine Equipment 13963-92010 NUT $3.95 Genuine Kubota joint, pipe, part number 14117-42562 — Alpine Equipment 14117-42562 JOINT, PIPE $6.94 Genuine Kubota spring, part number 11460-63120 — Alpine Equipment 11460-63120 SPRING $5.42 Genuine Kubota bearing, part number 11460-63500 — Alpine Equipment 11460-63500 BEARING $22.26 Genuine Kubota retainer, part number 11460-63110 — Alpine Equipment 11460-63110 RETAINER $7.80 Genuine Kubota GEAR(2), part number 11460-63270 — Alpine Equipment 11460-63270 GEAR(2) $39.10 Genuine Kubota tube, fuel, part number 09661-40300 — Alpine Equipment 09661-40300 TUBE, FUEL $4.34 Genuine Kubota clamp, hose, part number 09318-88130 — Alpine Equipment 09318-88130 CLAMP, HOSE $1.68 Genuine Kubota clamp, hose, part number 09318-88100 — Alpine Equipment 09318-88100 CLAMP, HOSE $1.39 Genuine Kubota clamp, hose, part number 09318-88115 — Alpine Equipment 09318-88115 CLAMP, HOSE $1.68 Genuine Kubota ball, part number 07715-03205 — Alpine Equipment 07715-03205 BALL $0.17 Genuine Kubota ball, part number 07715-00403 — Alpine Equipment 07715-00403 BALL $2.64 Genuine Kubota ball, part number 07715-00401 — Alpine Equipment 07715-00401 BALL $0.17 Genuine Kubota cap, sealing, part number 06311-85018 — Alpine Equipment 06311-85018 CAP, SEALING $2.18 Genuine Kubota key, feather, part number 05712-00730 — Alpine Equipment 05712-00730 KEY, FEATHER $2.01 Genuine Kubota key, feather, part number 05712-00720 — Alpine Equipment 05712-00720 KEY, FEATHER $1.54 Genuine Kubota key, feather, part number 05712-00525 — Alpine Equipment 05712-00525 KEY, FEATHER $1.47 Genuine Kubota key, feather, part number 05712-00535 — Alpine Equipment 05712-00535 KEY, FEATHER $1.80 Genuine Kubota plug, part number 06311-55010 — Alpine Equipment 06311-55010 PLUG $2.01 Genuine Kubota pin, spring, part number 05411-00620 — Alpine Equipment 05411-00620 PIN, SPRING $1.51 Genuine Kubota pin, spring, part number 05411-00414 — Alpine Equipment 05411-00414 PIN, SPRING $0.64

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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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