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 bolt,flange, part number 1G861-91010 — Alpine Equipment 1G861-91010 BOLT,FLANGE $2.33 Genuine Kubota piston, part number 1G861-21112 — Alpine Equipment 1G861-21112 PISTON $153.85 Genuine Kubota glow plug, part number 1G852-65512 — Alpine Equipment 1G852-65512 GLOW PLUG $26.45 Genuine Kubota assy holder,nozzle, part number 1G852-53002 — Alpine Equipment 1G852-53002 ASSY HOLDER,NOZZLE $226.28 Genuine Kubota valve,exhaust, part number 1G852-13124 — Alpine Equipment 1G852-13124 VALVE,EXHAUST $25.77 Genuine Kubota valve,inlet, part number 1G852-13114 — Alpine Equipment 1G852-13114 VALVE,INLET $28.79 Genuine Kubota assy cooler,oil, part number 1G849-37010 — Alpine Equipment 1G849-37010 ASSY COOLER,OIL $605.44 Genuine Kubota kit metal(std), part number 1G842-23752 — Alpine Equipment 1G842-23752 KIT METAL(STD) $318.66 Genuine Kubota nut, part number 1G826-92032 — Alpine Equipment 1G826-92032 NUT $4.53 Genuine Kubota cover(breather), part number 1G801-05120 — Alpine Equipment 1G801-05120 COVER(BREATHER) $15.96 Genuine Kubota lever,speed control, part number 1G790-57150 — Alpine Equipment 1G790-57150 LEVER,SPEED CONTROL $35.29 Genuine Kubota collar,valve seat, part number 1G790-32302 — Alpine Equipment 1G790-32302 COLLAR,VALVE SEAT $2.40 Genuine Kubota assy ring,piston 025, part number 1G790-21092 — Alpine Equipment 1G790-21092 ASSY RING,PISTON 025 $102.68 Genuine Kubota assy piston ring, part number 1G790-21054 — Alpine Equipment 1G790-21054 ASSY PISTON RING $102.95 Genuine Kubota belt,v, part number 1G780-97010 — Alpine Equipment 1G780-97010 BELT,V $23.07 Genuine Kubota gasket, part number 1G751-88130 — Alpine Equipment 1G751-88130 GASKET $3.40 Genuine Kubota gasket,fuel pump, part number 1G751-52140 — Alpine Equipment 1G751-52140 GASKET,FUEL PUMP $2.27 Genuine Kubota gasket,in/manifold, part number 1G750-11820 — Alpine Equipment 1G750-11820 GASKET,IN/MANIFOLD $12.72 Genuine Kubota gasket,cyl.head, part number 1G750-03622 — Alpine Equipment 1G750-03622 GASKET,CYL.HEAD $101.75 Genuine Kubota gasket,cyl.head, part number 1G750-03612 — Alpine Equipment 1G750-03612 GASKET,CYL.HEAD $101.75 Genuine Kubota gasket,cyl.head, part number 1G750-03312 — Alpine Equipment 1G750-03312 GASKET,CYL.HEAD $101.75 Genuine Kubota alternator,assy, part number 1G740-64010 — Alpine Equipment 1G740-64010 ALTERNATOR,ASSY $358.51 Genuine Kubota hose,oil cooler, part number 1G730-37162 — Alpine Equipment 1G730-37162 HOSE,OIL COOLER $16.29 Genuine Kubota gasket,gear case, part number 1G701-04130 — Alpine Equipment 1G701-04130 GASKET,GEAR CASE $27.50 Genuine Kubota assy pump fuel, part number 1G662-52034 — Alpine Equipment 1G662-52034 ASSY PUMP FUEL $151.03 Genuine Kubota valve, part number 1G657-11472 — Alpine Equipment 1G657-11472 VALVE $9.27 Genuine Kubota assy pump,fuel, part number 1G639-52035 — Alpine Equipment 1G639-52035 ASSY PUMP,FUEL $151.03 Genuine Kubota cover, part number 1G608-74120 — Alpine Equipment 1G608-74120 COVER $98.60 Genuine Kubota gauge oil, part number 1G608-36410 — Alpine Equipment 1G608-36410 GAUGE OIL $30.74 Genuine Kubota gear, idle, part number 1G607-83510 — Alpine Equipment 1G607-83510 GEAR, IDLE $432.42 Genuine Kubota shaft, part number 1G607-83180 — Alpine Equipment 1G607-83180 SHAFT $322.65 Genuine Kubota plug,oil gauge, part number 1G513-36550 — Alpine Equipment 1G513-36550 PLUG,OIL GAUGE $2.86 Genuine Kubota sensor(coolant temp., part number 1G498-83040 — Alpine Equipment 1G498-83040 SENSOR(COOLANT TEMP. $31.33 Genuine Kubota gasket, part number 1G492-16220 — Alpine Equipment 1G492-16220 GASKET $3.81 Genuine Kubota assy pump water, part number 1G489-73035 — Alpine Equipment 1G489-73035 ASSY PUMP WATER $169.80 Genuine Kubota adapter,oilfilter, part number 1G489-32610 — Alpine Equipment 1G489-32610 ADAPTER,OILFILTER $34.32 Genuine Kubota plug,oil filter, part number 1G489-32370 — Alpine Equipment 1G489-32370 PLUG,OIL FILTER $32.12 Genuine Kubota cover,alternator, part number 1G465-13860 — Alpine Equipment 1G465-13860 COVER,ALTERNATOR $32.97 Genuine Kubota kit gasket U,D1703/1803,M E2B, part number 1G462-99350 — Alpine Equipment 1G462-99350 KIT GASKET U,D1703/1803,M E2B $183.46 Genuine Kubota belt V,40.5A cogged, part number 1G382-97010 — Alpine Equipment 1G382-97010 BELT V,40.5A COGGED $24.67 Genuine Kubota cock(drain), part number 1G377-73100 — Alpine Equipment 1G377-73100 COCK(DRAIN) $21.55 Genuine Kubota pump,assy(fuel), part number 1G377-52030 — Alpine Equipment 1G377-52030 PUMP,ASSY(FUEL) $145.91 Genuine Kubota pipe, water, part number 1G364-72940 — Alpine Equipment 1G364-72940 PIPE, WATER $40.68 Genuine Kubota assy alternator, part number 1G362-64010 — Alpine Equipment 1G362-64010 ASSY ALTERNATOR $429.99 Genuine Kubota belt,v, part number 1G355-97010 — Alpine Equipment 1G355-97010 BELT,V $25.93 Genuine Kubota o-ring, part number 1G311-43570 — Alpine Equipment 1G311-43570 O-RING $4.27 Genuine Kubota element, part number 1G311-43380 — Alpine Equipment 1G311-43380 ELEMENT $32.92 Genuine Kubota separator, part number 1G311-43350 — Alpine Equipment 1G311-43350 SEPARATOR $286.77

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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