This is a new, genuine Kubota starter motor, part number 17121-63015. It is a 12 V, 2.0 kW unit for Kubota 03 Series engines. It is Kubota’s replacement for starter 17121-63010, which Kubota engine dealers list for some builds of the D1803, V2203 and V2403 diesels.

Replace a starter when it clicks but will not turn, cranks slowly on a good battery, grinds on engagement, or pulls too much current. Rule out the battery, cables, grounds and the start signal first. Kubota built 03 Series engines with more than one starter, and the output and pinion tooth count differ between them, so the engine model alone is not enough to order by.

Specifications

Fits / Applications

• Kubota 03 Series diesel engines built with starter 17121-63015 or 17121-63010
• Some builds of the Kubota D1803 three-cylinder diesel
• Some builds of the Kubota V2203 and V2403 four-cylinder diesels
• Replaces Kubota starter 17121-63010

Disconnect the battery before removal. Before you fit the new starter, count the pinion teeth and compare the mounting flange and terminals with the old one. Clean the mounting face and the ground path, check the flywheel ring gear for worn or chipped teeth, and tighten the mounting bolts to Kubota’s torque spec.

Part Numbers & Cross Reference

Kubota 17121-63015  ·  Kubota (superseded) 17121-63010

Cross-reference numbers can change with engine serial, build year and emissions tier, so treat this list as a starting point. Send us your engine serial number and we will confirm the exact match against your build before anything ships. That check is free and takes a few minutes.

Frequently Asked Questions

Will the 17121-63015 fit my Kubota V2403?

Its older number, 17121-63010, is listed for some V2403 builds, not all of them. Kubota fitted more than one starter to the V2403, including 1K371-63010. Call 530-668-0818 with your engine serial number and the number on your old starter.

What number does the 17121-63015 replace?

It is Kubota’s replacement for starter 17121-63010.

How do I tell this starter from the other Kubota 03 Series starters?

Read the number on the old starter and count the pinion teeth. The 17121-63015 and its older number 17121-63010 are 12 V, 2.0 kW. Starters 1K371-63010 and 17381-63012 are separate part numbers for the same engine family.

Is this starter new or remanufactured?

New, genuine Kubota.

Related Parts

• Kubota V2203 & V2403 (03 Series) Starter Motor, 12V 2.0 kW | Genuine Kubota 1K371-63010
• Kubota D1503, D1703, D1803, V2003, V2203 & V2403 Engine Stop Solenoid | Genuine Kubota 1A021-60017
• Kubota V2203 & V2403 Fuel Injector, Nozzle Holder Kit | Genuine Kubota 16454-53905
• Kubota 03 Series V2203 & D1503 Fuel Stop Solenoid Actuator 12 V | Genuine Kubota 1G939-60012

Why Buy From Valley Fuel Injection

We are an authorized Kubota dealer and a diesel fuel-injection shop in Woodland, CA, working on diesel engines since 1993. When you call, you talk to people who know Kubota engines, and we check the part number against your engine serial or machine model before anything ships, so the right part arrives the first time. See our Kubota engine sales, parts and service.