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 tube 1 separator, part number 1J805-05850 — Alpine Equipment 1J805-05850 TUBE 1 SEPARATOR $64.42 Genuine Kubota harness,wire,assy, part number 1J804-65088 — Alpine Equipment 1J804-65088 HARNESS,WIRE,ASSY $241.28 Genuine Kubota harness,wire,assy, part number 1J804-65078 — Alpine Equipment 1J804-65078 HARNESS,WIRE,ASSY $265.86 Genuine Kubota rail,assy, part number 1J804-50603 — Alpine Equipment 1J804-50603 RAIL,ASSY $1,518.87 Genuine Kubota tube,assy(over flow), part number 1J804-42502 — Alpine Equipment 1J804-42502 TUBE,ASSY(OVER FLOW) $165.30 Genuine Kubota flywheel comp, part number 1J804-25013 — Alpine Equipment 1J804-25013 FLYWHEEL COMP $986.93 Genuine Kubota filter,kit(dpf), part number 1J804-18930 — Alpine Equipment 1J804-18930 FILTER,KIT(DPF) $2,668.52 Genuine Kubota PIPE,COMP(PRESSURE,2, part number 1J804-18630 — Alpine Equipment 1J804-18630 PIPE,COMP(PRESSURE,2 $48.50 Genuine Kubota gasket(ex-manifold), part number 1J804-12350 — Alpine Equipment 1J804-12350 GASKET(EX-MANIFOLD) $11.17 Genuine Kubota gasket(in-manifold), part number 1J804-11820 — Alpine Equipment 1J804-11820 GASKET(IN-MANIFOLD) $12.72 Genuine Kubota tube(oil return), part number 1J804-05830 — Alpine Equipment 1J804-05830 TUBE(OIL RETURN) $10.77 Genuine Kubota hose, part number 1J803-71470 — Alpine Equipment 1J803-71470 HOSE $6.85 Genuine Kubota gasket,egr cooler, part number 1J803-17430 — Alpine Equipment 1J803-17430 GASKET,EGR COOLER $3.09 Genuine Kubota gasket,egr valve, part number 1J803-17410 — Alpine Equipment 1J803-17410 GASKET,EGR VALVE $2.40 Genuine Kubota valve,kit(scv), part number 1J801-97550 — Alpine Equipment 1J801-97550 VALVE,KIT(SCV) $917.34 Genuine Kubota sensor, part number 1J801-59710 — Alpine Equipment 1J801-59710 SENSOR $122.68 Genuine Kubota pipe(injection,a), part number 1J801-53750 — Alpine Equipment 1J801-53750 PIPE(INJECTION,A) $40.34 Genuine Kubota injector,assy, part number 1J801-53052 — Alpine Equipment 1J801-53052 INJECTOR,ASSY $860.16 Genuine Kubota pump,assy(fuel), part number 1J801-52030 — Alpine Equipment 1J801-52030 PUMP,ASSY(FUEL) $208.41 Genuine Kubota valve,assy(scv), part number 1J801-50540 — Alpine Equipment 1J801-50540 VALVE,ASSY(SCV) $1,025.25 Genuine Kubota assy pump(supply), part number 1J801-50500 — Alpine Equipment 1J801-50500 ASSY PUMP(SUPPLY) $3,273.75 Genuine Kubota hose oil cooler, part number 1J801-37160 — Alpine Equipment 1J801-37160 HOSE OIL COOLER $17.63 Genuine Kubota PISTON(05), part number 1J801-21900 — Alpine Equipment 1J801-21900 PISTON(05) $143.37 Genuine Kubota PISTON(05), part number 1J801-21110 — Alpine Equipment 1J801-21110 PISTON(05) $150.60 Genuine Kubota body,kit, part number 1J801-18950 — Alpine Equipment 1J801-18950 BODY,KIT $554.54 Genuine Kubota catalyst,kit(doc), part number 1J801-18940 — Alpine Equipment 1J801-18940 CATALYST,KIT(DOC) $2,813.09 Genuine Kubota filter,kit(dpf), part number 1J801-18930 — Alpine Equipment 1J801-18930 FILTER,KIT(DPF) $2,875.54 Genuine Kubota TUBE(PRESSURE,2), part number 1J801-18650 — Alpine Equipment 1J801-18650 TUBE(PRESSURE,2) $10.09 Genuine Kubota TUBE(PRESSURE,1), part number 1J801-18642 — Alpine Equipment 1J801-18642 TUBE(PRESSURE,1) $12.06 Genuine Kubota PIPE,COMP(PRESSURE,2, part number 1J801-18632 — Alpine Equipment 1J801-18632 PIPE,COMP(PRESSURE,2 $50.38 Genuine Kubota PIPE,COMP(PRESSURE,1, part number 1J801-18620 — Alpine Equipment 1J801-18620 PIPE,COMP(PRESSURE,1 $47.76 Genuine Kubota gasket(dpf), part number 1J801-18412 — Alpine Equipment 1J801-18412 GASKET(DPF) $35.78 Genuine Kubota sensor,assy, part number 1J801-10690 — Alpine Equipment 1J801-10690 SENSOR,ASSY $377.02 Genuine Kubota O-RING(SCV,2), part number 1J800-96790 — Alpine Equipment 1J800-96790 O-RING(SCV,2) $8.01 Genuine Kubota O-RING(SCV,1), part number 1J800-96780 — Alpine Equipment 1J800-96780 O-RING(SCV,1) $11.42 Genuine Kubota bolt,joint, part number 1J800-95820 — Alpine Equipment 1J800-95820 BOLT,JOINT $26.95 Genuine Kubota bolt,joint, part number 1J800-95790 — Alpine Equipment 1J800-95790 BOLT,JOINT $66.04 Genuine Kubota sensor, part number 1J800-59660 — Alpine Equipment 1J800-59660 SENSOR $154.17 Genuine Kubota pipe,injection, part number 1J800-53730 — Alpine Equipment 1J800-53730 PIPE,INJECTION $39.88 Genuine Kubota pipe,injection, part number 1J800-53720 — Alpine Equipment 1J800-53720 PIPE,INJECTION $40.34 Genuine Kubota pipe,injection, part number 1J800-53710 — Alpine Equipment 1J800-53710 PIPE,INJECTION $39.88 Genuine Kubota o ring, part number 1J800-53490 — Alpine Equipment 1J800-53490 O RING $0.68 Genuine Kubota assy bolt, part number 1J800-53200 — Alpine Equipment 1J800-53200 ASSY BOLT $3.45 Genuine Kubota gasket,pump, part number 1J800-52130 — Alpine Equipment 1J800-52130 GASKET,PUMP $3.19 Genuine Kubota gasket, part number 1J800-50520 — Alpine Equipment 1J800-50520 GASKET $2.07 Genuine Kubota gasket, part number 1J800-43650 — Alpine Equipment 1J800-43650 GASKET $3.86 Genuine Kubota base,filter, part number 1J800-43220 — Alpine Equipment 1J800-43220 BASE,FILTER $104.91 Genuine Kubota clamp, part number 1J800-42750 — Alpine Equipment 1J800-42750 CLAMP $4.49

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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