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 hose(egr-v, 2), part number 1J804-71820 — Alpine Equipment 1J804-71820 HOSE(EGR-V, 2) $69.04 Genuine Kubota bracket connector, part number 1J805-65140 — Alpine Equipment 1J805-65140 BRACKET CONNECTOR $17.53 Genuine Kubota bracket connector, part number 1J804-65110 — Alpine Equipment 1J804-65110 BRACKET CONNECTOR $5.83 Genuine Kubota stay(egr cooler), part number 1J804-71432 — Alpine Equipment 1J804-71432 STAY(EGR COOLER) $5.66 Genuine Kubota comp.cooler(egr), part number 1J804-71410 — Alpine Equipment 1J804-71410 COMP.COOLER(EGR) $710.65 Genuine Kubota valve, assy(egr), part number 1J804-62705 — Alpine Equipment 1J804-62705 VALVE, ASSY(EGR) $706.21 Genuine Kubota pipe, comp(water over, part number 1J804-42852 — Alpine Equipment 1J804-42852 PIPE, COMP(WATER OVER $70.52 Genuine Kubota hose(egr-v, 1), part number 1J804-71810 — Alpine Equipment 1J804-71810 HOSE(EGR-V, 1) $11.15 Genuine Kubota camshaft, assy(fuel), part number 1J804-16020 — Alpine Equipment 1J804-16020 CAMSHAFT, ASSY(FUEL) $725.95 Genuine Kubota cover, head, assy, part number 1J804-14503 — Alpine Equipment 1J804-14503 COVER, HEAD, ASSY $269.60 Genuine Kubota cord(glow plug), part number 1J804-65560 — Alpine Equipment 1J804-65560 CORD(GLOW PLUG) $6.35 Genuine Kubota bracket(wh, 7), part number 1J804-65170 — Alpine Equipment 1J804-65170 BRACKET(WH, 7) $23.36 Genuine Kubota comp.pipe(egr, 1), part number 1J804-17320 — Alpine Equipment 1J804-17320 COMP.PIPE(EGR, 1) $220.34 Genuine Kubota tube(pressure, 2), part number 1J804-18652 — Alpine Equipment 1J804-18652 TUBE(PRESSURE, 2) $9.56 Genuine Kubota tube pipe, part number 1J804-42220 — Alpine Equipment 1J804-42220 TUBE PIPE $18.10 Genuine Kubota manifold(inlet), part number 1J804-11762 — Alpine Equipment 1J804-11762 MANIFOLD(INLET) $205.44 Genuine Kubota tube pipe, part number 1J804-42210 — Alpine Equipment 1J804-42210 TUBE PIPE $27.63 Genuine Kubota manifold exhaust, part number 1J804-12312 — Alpine Equipment 1J804-12312 MANIFOLD EXHAUST $287.24 Genuine Kubota tube separator, part number 1J804-05860 — Alpine Equipment 1J804-05860 TUBE SEPARATOR $42.90 Genuine Kubota tube separator, part number 1J804-05850 — Alpine Equipment 1J804-05850 TUBE SEPARATOR $84.13 Genuine Kubota stud, part number 1J803-91490 — Alpine Equipment 1J803-91490 STUD $15.80 Genuine Kubota hose(water return), part number 1J803-73350 — Alpine Equipment 1J803-73350 HOSE(WATER RETURN) $4.83 Genuine Kubota hose(water return), part number 1J803-73340 — Alpine Equipment 1J803-73340 HOSE(WATER RETURN) $4.34 Genuine Kubota pipe, part number 1J803-71480 — Alpine Equipment 1J803-71480 PIPE $35.28 Genuine Kubota hook engine rear, part number 1J804-01750 — Alpine Equipment 1J804-01750 HOOK ENGINE REAR $24.18 Genuine Kubota spacer, comp(breather, part number 1J802-14680 — Alpine Equipment 1J802-14680 SPACER, COMP(BREATHER $42.04 Genuine Kubota stay(dpf, 1), part number 1J802-18720 — Alpine Equipment 1J802-18720 STAY(DPF, 1) $280.43 Genuine Kubota STUD(M8X25), part number 1J801-91500 — Alpine Equipment 1J801-91500 STUD(M8X25) $15.18 Genuine Kubota bolt, flange, part number 1J801-91010 — Alpine Equipment 1J801-91010 BOLT, FLANGE $2.88 Genuine Kubota clamp, part number 1J801-97280 — Alpine Equipment 1J801-97280 CLAMP $2.18 Genuine Kubota clamp, hose, part number 1J801-71600 — Alpine Equipment 1J801-71600 CLAMP, HOSE $3.70 Genuine Kubota bracket wh 3, part number 1J801-65132 — Alpine Equipment 1J801-65132 BRACKET WH 3 $13.56 Genuine Kubota clamp(injector), part number 1J801-53150 — Alpine Equipment 1J801-53150 CLAMP(INJECTOR) $27.54 Genuine Kubota STUD(M8X55), part number 1J801-91490 — Alpine Equipment 1J801-91490 STUD(M8X55) $12.51 Genuine Kubota clamp hose, part number 1J801-71590 — Alpine Equipment 1J801-71590 CLAMP HOSE $4.70 Genuine Kubota clamp, hose, part number 1J801-18750 — Alpine Equipment 1J801-18750 CLAMP, HOSE $0.60 Genuine Kubota bracket wh 2, part number 1J801-65120 — Alpine Equipment 1J801-65120 BRACKET WH 2 $6.08 Genuine Kubota bracket(sensor), part number 1J801-59740 — Alpine Equipment 1J801-59740 BRACKET(SENSOR) $12.64 Genuine Kubota bracket(dpf, 2), part number 1J801-18710 — Alpine Equipment 1J801-18710 BRACKET(DPF, 2) $100.58 Genuine Kubota clamp, part number 1J801-37390 — Alpine Equipment 1J801-37390 CLAMP $13.99 Genuine Kubota bracket dpf, part number 1J801-18700 — Alpine Equipment 1J801-18700 BRACKET DPF $103.10 Genuine Kubota stay(dpf, 2), part number 1J801-18730 — Alpine Equipment 1J801-18730 STAY(DPF, 2) $87.50 Genuine Kubota wheel, part number 1J801-16910 — Alpine Equipment 1J801-16910 WHEEL $36.58 Genuine Kubota valve, throttle, assy, part number 1J801-10600 — Alpine Equipment 1J801-10600 VALVE, THROTTLE, ASSY $478.73 Genuine Kubota pipe, comp(oil return, part number 1J801-05840 — Alpine Equipment 1J801-05840 PIPE, COMP(OIL RETURN $18.40 Genuine Kubota bolt, joint, part number 1J800-95810 — Alpine Equipment 1J800-95810 BOLT, JOINT $27.11 Genuine Kubota o ring, part number 1J800-43970 — Alpine Equipment 1J800-43970 O RING $16.53 Genuine Kubota bolt(scv), part number 1J800-91430 — Alpine Equipment 1J800-91430 BOLT(SCV) $13.32

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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