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 seat, inlet valve, part number 17111-13620 — Alpine Equipment 17111-13620 SEAT, INLET VALVE $14.36 Genuine Kubota assy switch, part number 16830-63020 — Alpine Equipment 16830-63020 ASSY SWITCH $475.28 Genuine Kubota cover, end, part number 16678-64230 — Alpine Equipment 16678-64230 COVER, END $36.60 Genuine Kubota bearing ball, part number 16652-64782 — Alpine Equipment 16652-64782 BEARING BALL $25.21 Genuine Kubota assy coupler, part number 16662-65830 — Alpine Equipment 16662-65830 ASSY COUPLER $13.61 Genuine Kubota bearing, ball(radial), part number 16661-73550 — Alpine Equipment 16661-73550 BEARING, BALL(RADIAL) $51.85 Genuine Kubota bearing, ball, part number 16652-64770 — Alpine Equipment 16652-64770 BEARING, BALL $28.79 Genuine Kubota holder, brush, part number 16652-64310 — Alpine Equipment 16652-64310 HOLDER, BRUSH $52.32 Genuine Kubota assy seal, mechanical, part number 16661-73052 — Alpine Equipment 16661-73052 ASSY SEAL, MECHANICAL $18.10 Genuine Kubota assy regulator, part number 16652-64602 — Alpine Equipment 16652-64602 ASSY REGULATOR $310.75 Genuine Kubota cord, stop solenoid, part number 16611-63660 — Alpine Equipment 16611-63660 CORD, STOP SOLENOID $7.16 Genuine Kubota joint, part number 16541-95790 — Alpine Equipment 16541-95790 JOINT $12.85 Genuine Kubota assy pipe, over flow, part number 16467-42502 — Alpine Equipment 16467-42502 ASSY PIPE, OVER FLOW $39.10 Genuine Kubota bolt, part number 16427-91010 — Alpine Equipment 16427-91010 BOLT $1.74 Genuine Kubota seat, exhaust valve, part number 16415-13612 — Alpine Equipment 16415-13612 SEAT, EXHAUST VALVE $13.56 Genuine Kubota gear, injection pump, part number 16415-51150 — Alpine Equipment 16415-51150 GEAR, INJECTION PUMP $141.26 Genuine Kubota seat, inlet valve, part number 16415-13620 — Alpine Equipment 16415-13620 SEAT, INLET VALVE $13.56 Genuine Kubota nut, part number 16285-92010 — Alpine Equipment 16285-92010 NUT $5.81 Genuine Kubota plug, expansion, part number 16271-96160 — Alpine Equipment 16271-96160 PLUG, EXPANSION $1.94 Genuine Kubota plug, part number 16241-96020 — Alpine Equipment 16241-96020 PLUG $3.12 Genuine Kubota piece, nozzle, part number 16082-53610 — Alpine Equipment 16082-53610 PIECE, NOZZLE $87.80 Genuine Kubota screw, round head, part number 15881-93030 — Alpine Equipment 15881-93030 SCREW, ROUND HEAD $1.23 Genuine Kubota screw, round head, part number 15881-93010 — Alpine Equipment 15881-93010 SCREW, ROUND HEAD $1.99 Genuine Kubota screw, round head, part number 15881-93020 — Alpine Equipment 15881-93020 SCREW, ROUND HEAD $0.55 Genuine Kubota bolt, part number 15881-91040 — Alpine Equipment 15881-91040 BOLT $1.99 Genuine Kubota nut, part number 15881-92020 — Alpine Equipment 15881-92020 NUT $1.99 Genuine Kubota screw, round head, part number 15881-93040 — Alpine Equipment 15881-93040 SCREW, ROUND HEAD $1.23 Genuine Kubota bolt, part number 15881-91050 — Alpine Equipment 15881-91050 BOLT $3.11 Genuine Kubota bush, insulation, part number 15881-64900 — Alpine Equipment 15881-64900 BUSH, INSULATION $14.63 Genuine Kubota cover, bearing, part number 15881-64800 — Alpine Equipment 15881-64800 COVER, BEARING $6.57 Genuine Kubota assy rectifier, part number 15881-64850 — Alpine Equipment 15881-64850 ASSY RECTIFIER $262.90 Genuine Kubota nut, part number 15881-92010 — Alpine Equipment 15881-92010 NUT $5.69 Genuine Kubota spring, brush, part number 15881-64330 — Alpine Equipment 15881-64330 SPRING, BRUSH $2.92 Genuine Kubota plate, retainer, part number 15881-64710 — Alpine Equipment 15881-64710 PLATE, RETAINER $7.78 Genuine Kubota bolt, through, part number 15881-64260 — Alpine Equipment 15881-64260 BOLT, THROUGH $13.14 Genuine Kubota brush, part number 15881-64090 — Alpine Equipment 15881-64090 BRUSH $7.16 Genuine Kubota frame, end, part number 15881-64060 — Alpine Equipment 15881-64060 FRAME, END $131.70 Genuine Kubota washer, thrust, part number 15881-64810 — Alpine Equipment 15881-64810 WASHER, THRUST $4.98 Genuine Kubota collar, part number 15881-64150 — Alpine Equipment 15881-64150 COLLAR $9.39 Genuine Kubota assy rocker arm, part number 15621-14030 — Alpine Equipment 15621-14030 ASSY ROCKER ARM $51.75 Genuine Kubota nut, part number 15601-92012 — Alpine Equipment 15601-92012 NUT $8.86 Genuine Kubota sleeve, governor, part number 15611-55450 — Alpine Equipment 15611-55450 SLEEVE, GOVERNOR $65.99 Genuine Kubota case, governor ball, part number 15611-55690 — Alpine Equipment 15611-55690 CASE, GOVERNOR BALL $42.20 Genuine Kubota plug, part number 15521-96030 — Alpine Equipment 15521-96030 PLUG $2.13 Genuine Kubota flange, water return, part number 15521-73320 — Alpine Equipment 15521-73320 FLANGE, WATER RETURN $35.52 Genuine Kubota screw, follow, part number 15521-51320 — Alpine Equipment 15521-51320 SCREW, FOLLOW $19.34 Genuine Kubota o ring, part number 15511-96660 — Alpine Equipment 15511-96660 O RING $13.51 Genuine Kubota bearing, ball(radial), part number 15478-26730 — Alpine Equipment 15478-26730 BEARING, BALL(RADIAL) $78.56

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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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