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Denso 428000-2030 is the 12 V, 2.0 kW gear reduction starter motor with an offset solenoid, a two bolt flange and a 9 tooth pinion. It is used on Kubota V2403 engines. This aftermarket version has the same mounting and electrical connector as the original, so it plugs in and bolts on where the old one came off.
Sold as one unit. Check the number on your old part, or in the parts manual for your machine, before ordering.
| Part Type | Starter Motor |
| Replaces | Denso 428000-2030 |
| Voltage | 12 V |
| Power | 2.0 kW |
| Pinion teeth | 9 |
| Engine | Kubota V2403 |
| Fits | Kubota V2403 engines, including Kubota KX121 and KX161 excavators and R510 and R520 wheel loaders |
| Condition | New, aftermarket |
| Stat. HS-Code | 851140 |
| Country of Manufacture | China |
Machines
Check the part number on your old unit before ordering.
| Denso Part No.(SPM Part No.) | Fits |
|---|---|
| 428000-2030(SPM-HEP-4661) | Kubota V2403 engines, including Kubota KX121 and KX161 excavators and R510 and R520 wheel loaders |
| 4280002030(SPM-HEP-4661) | Kubota V2403 engines, including Kubota KX121 and KX161 excavators and R510 and R520 wheel loaders |
What it does
The solenoid throws the pinion into the flywheel ring gear and the motor turns the engine over until it fires.
Where it is used
Made for the Kubota V2403 engines, including Kubota KX121, KX161 excavators, R510 and 1 more. The full list is in the tables above.
We check what other aftermarket sellers charge for this same part. Their prices on the date we checked:
| Seller | Price | Checked |
|---|---|---|
| eBay, aftermarket seller | USD 127.34 | 31 Oct 2026 |
| FridayParts | USD 134.19 | 31 Oct 2026 |
| Amazon (Worldthump) | USD 149.00 | 3 Nov 2026 |
| Amazon (PumpShark) | USD 149.99 | 3 Nov 2026 |
| Amazon (DB Electrical) | USD 151.23 | 3 Nov 2026 |
| SINOCMP | USD 199.00 | 31 Oct 2026 |
| Spare Part Mart | USD 80.59 | Today |
Our price of USD 80.59 is 37% to 60% less than these sellers.
Found this part cheaper somewhere else? Send us the listing and we will beat it by 5% under our Price Beat Guarantee. Every order is also covered by our 30 day money back guarantee.
Yes, it is a direct replacement for the Denso 428000-2030 with the same fitting.
Typically 5,000 to 10,000 hours, depending on how often the machine is started and how well the batteries are kept.
Clicking with a good battery, slow cranking, grinding as it engages, or the starter staying engaged after the engine fires.
Disconnect the battery earth before removing the old unit. The main cable is live at full battery current.
Battery voltage under load, the earth strap and the main cable. A weak supply makes a good starter motor look faulty and will burn out the new one.
No. It is an aftermarket starter motor made to replace the Denso 428000-2030. It is not made by the original manufacturer; the number only shows what it replaces.
Live rates for the quantity selected, delivered to your door. Confirmed at checkout.
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