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 key,feather, part number 05712-00410 — Alpine Equipment 05712-00410 KEY,FEATHER $1.03 Genuine Kubota pin,snap, part number 05515-71000 — Alpine Equipment 05515-71000 PIN,SNAP $1.20 Genuine Kubota pin,spring, part number 05411-00420 — Alpine Equipment 05411-00420 PIN,SPRING $0.54 Genuine Kubota pin,straight, part number 05012-00609 — Alpine Equipment 05012-00609 PIN,STRAIGHT $0.54 Genuine Kubota o ring, part number 04817-50300 — Alpine Equipment 04817-50300 O RING $1.67 Genuine Kubota o ring, part number 04817-00360 — Alpine Equipment 04817-00360 O RING $0.89 Genuine Kubota o ring, part number 04817-00220 — Alpine Equipment 04817-00220 O RING $1.50 Genuine Kubota o ring, part number 04817-00160 — Alpine Equipment 04817-00160 O RING $0.89 Genuine Kubota o ring, part number 04817-00150 — Alpine Equipment 04817-00150 O RING $0.80 Genuine Kubota o ring, part number 04817-00100 — Alpine Equipment 04817-00100 O RING $1.18 Genuine Kubota o ring, part number 04817-00090 — Alpine Equipment 04817-00090 O RING $0.45 Genuine Kubota o ring, part number 04817-00060 — Alpine Equipment 04817-00060 O RING $1.23 Genuine Kubota oring, part number 04816-05150 — Alpine Equipment 04816-05150 ORING $0.80 Genuine Kubota o ring, part number 04814-06310 — Alpine Equipment 04814-06310 O RING $1.54 Genuine Kubota o ring, part number 04814-00090 — Alpine Equipment 04814-00090 O RING $1.09 Genuine Kubota o ring, part number 04811-10850 — Alpine Equipment 04811-10850 O RING $5.80 Genuine Kubota o ring, part number 04811-10460 — Alpine Equipment 04811-10460 O RING $2.03 Genuine Kubota o ring, part number 04811-10300 — Alpine Equipment 04811-10300 O RING $1.67 Genuine Kubota gasket, part number 04724-00140 — Alpine Equipment 04724-00140 GASKET $0.91 Genuine Kubota washer with rubber, part number 04717-01000 — Alpine Equipment 04717-01000 WASHER WITH RUBBER $1.54 Genuine Kubota cir-clip,external, part number 04612-00250 — Alpine Equipment 04612-00250 CIR-CLIP,EXTERNAL $0.68 Genuine Kubota cir-clip,internal, part number 04611-00620 — Alpine Equipment 04611-00620 CIR-CLIP,INTERNAL $3.37 Genuine Kubota cir-clip,internal, part number 04611-00420 — Alpine Equipment 04611-00420 CIR-CLIP,INTERNAL $1.86 Genuine Kubota washer,plain, part number 04013-50080 — Alpine Equipment 04013-50080 WASHER,PLAIN $0.46 Genuine Kubota screw,pan head, part number 03054-50412 — Alpine Equipment 03054-50412 SCREW,PAN HEAD $1.26 Genuine Kubota screw with washer, part number 03024-50520 — Alpine Equipment 03024-50520 SCREW WITH WASHER $0.38 Genuine Kubota screw,with washer, part number 03024-50510 — Alpine Equipment 03024-50510 SCREW,WITH WASHER $0.26 Genuine Kubota nut,flange, part number 02771-50100 — Alpine Equipment 02771-50100 NUT,FLANGE $2.71 Genuine Kubota nut,flange, part number 02761-50040 — Alpine Equipment 02761-50040 NUT,FLANGE $1.65 Genuine Kubota nut,flange, part number 02751-50080 — Alpine Equipment 02751-50080 NUT,FLANGE $2.61 Genuine Kubota nut,flange, part number 02751-50060 — Alpine Equipment 02751-50060 NUT,FLANGE $0.37 Genuine Kubota nut, part number 02156-50080 — Alpine Equipment 02156-50080 NUT $0.60 Genuine Kubota nut, part number 02056-50060 — Alpine Equipment 02056-50060 NUT $0.26 Genuine Kubota bolt,flange, part number 01774-51080 — Alpine Equipment 01774-51080 BOLT,FLANGE $2.89 Genuine Kubota bolt,flange, part number 01774-51070 — Alpine Equipment 01774-51070 BOLT,FLANGE $3.99 Genuine Kubota bolt,flange, part number 01754-51070 — Alpine Equipment 01754-51070 BOLT,FLANGE $3.65 Genuine Kubota bolt,flange, part number 01754-50875 — Alpine Equipment 01754-50875 BOLT,FLANGE $3.43 Genuine Kubota bolt,flange, part number 01754-50865 — Alpine Equipment 01754-50865 BOLT,FLANGE $2.91 Genuine Kubota bolt,flange, part number 01754-50855 — Alpine Equipment 01754-50855 BOLT,FLANGE $3.02 Genuine Kubota bolt,flange, part number 01754-50820 — Alpine Equipment 01754-50820 BOLT,FLANGE $2.88 Genuine Kubota bolt,flange, part number 01754-50816 — Alpine Equipment 01754-50816 BOLT,FLANGE $2.68 Genuine Kubota bolt,flange, part number 01754-50812 — Alpine Equipment 01754-50812 BOLT,FLANGE $2.68 Genuine Kubota bolt,flange, part number 01754-50655 — Alpine Equipment 01754-50655 BOLT,FLANGE $2.30 Genuine Kubota bolt,flange, part number 01754-50625 — Alpine Equipment 01754-50625 BOLT,FLANGE $2.46 Genuine Kubota bolt,flange, part number 01754-50620 — Alpine Equipment 01754-50620 BOLT,FLANGE $2.51 Genuine Kubota bolt,flange, part number 01754-50616 — Alpine Equipment 01754-50616 BOLT,FLANGE $2.97 Genuine Kubota bolt,flange, part number 01754-50612 — Alpine Equipment 01754-50612 BOLT,FLANGE $2.17 Genuine Kubota stud, part number 01518-50822 — Alpine Equipment 01518-50822 STUD $0.82

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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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