Kubota WG1903 Engine Parts

Alpine Equipment stocks OEM and aftermarket parts for the Kubota WG1903 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 WG1903 engine or a full rebuild? Call our factory-certified Kubota team at (801) 701-7394.

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Kubota WG1903 gas engine — genuine parts from Alpine Equipment Repair
  • Cylinders3
  • Displacement114.0 cu.in.
  • Bore & Stroke3.465ﾗ4.031 in
  • Rated Output43.6–46.9 HP
  • Max Torque97.4–103 lb-ft
  • AspirationNaturally aspirated
  • Dry Weight364–380 lbs

Specs vary by engine variant/spec code. Confirm fitment by part number or call us.

Kubota WG1903 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

WG1903 Engine Parts (53 parts)

More Kubota Engine Parts

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Need pricing on a Kubota WG1903 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