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.

D1803 Engine Parts (469 parts)

1G930-05513 TUBE,BREATHER $30.15 1G924-73012 ASSY THERMOSTAT $33.96 1G924-51750 BEARING,BALL $37.97 1G924-33240 TUBE(OIL,4) $8.65 1G924-05430 O RING $4.99 1G923-91010 BOLT $2.99 1G911-91022 BOLT $3.09 1G911-42462 VALVE,FUEL CHECK $61.81 1G911-05203 COMP VALVE,BREATHER $47.54 1G905-32610 BASE,OIL FILTER $74.35 1G897-13124 VALVE,EXHAUST $24.24 1G897-13114 VALVE,INLET $26.21 1G896-96650 GASKET $1.08 1G896-51320 BOLT,EYE(JOINT) $7.21 1G896-42502 TUBE ASSY,FUEL $2.40 1G896-37072 PACKING $15.94 1G896-37012 COOLER,OIL,ASSY $592.20 1G896-35660 GEAR,OIL PUMP DRIVE $33.52 1G896-13280 CAP(VALVE) $2.92 1G896-13240 SPRING,VALVE $12.07 1G896-04140 SEAL,OIL $11.76 1G866-52200 SHIM,INJECTION $4.49 1G861-97300 BEARING,BALL $47.54 1G861-91010 BOLT,FLANGE $2.33 1G861-21112 PISTON $153.85 1G852-65512 GLOW PLUG $26.45 1G852-53002 ASSY HOLDER,NOZZLE $226.28 1G852-13124 VALVE,EXHAUST $25.77 1G852-13114 VALVE,INLET $28.79 1G849-37010 ASSY COOLER,OIL $605.44 1G842-23752 KIT METAL(STD) $318.66 1G826-92032 NUT $4.53 1G801-05120 COVER(BREATHER) $15.96 1G790-57150 LEVER,SPEED CONTROL $35.29 1G790-32302 COLLAR,VALVE SEAT $2.40 1G790-21092 ASSY RING,PISTON 025 $102.68 1G790-21054 ASSY PISTON RING $102.95 1G780-97010 BELT,V $23.07 1G751-88130 GASKET $3.40 1G751-52140 GASKET,FUEL PUMP $2.27 1G750-11820 GASKET,IN/MANIFOLD $12.72 1G750-03622 GASKET,CYL.HEAD $101.75 1G750-03612 GASKET,CYL.HEAD $101.75 1G750-03312 GASKET,CYL.HEAD $101.75 1G740-64010 ALTERNATOR,ASSY $358.51 1G730-37162 HOSE,OIL COOLER $16.29 1G701-04130 GASKET,GEAR CASE $27.50 1G662-52034 ASSY PUMP FUEL $151.03

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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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349 S 100 W, American Fork, UT 84003 · Mon–Fri 7:00 AM – 5:00 PM · Sat by Appt