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Case 87638510 is the 12 volt Denso type planetary gear starter motor with solenoid and 10 tooth pinion. It is used on Case 400 series skid steers. 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.
The same part is also sold as Denso 428000-6030.
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 428000-6030 |
| Voltage | 12 V |
| Power | 3.0 kW |
| Pinion teeth | 10 |
| Rotation | Clockwise |
| Cross references | Case 87638510 |
| Fits | Case 420, 430, 435, 440, 445, 450 and 465 skid steers, TR270, TR320 and TV380, and New Holland L180 to L230 and C185 to C238 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 |
|---|---|
| 428000-6030(SPM-HEP-4434) | Case 420, 430, 435, 440, 445, 450 and 465 skid steers, TR270, TR320 and TV380, and New Holland L180 to L230 and C185 to C238 loaders |
| Brand | Part No. |
|---|---|
| Denso | 428000-6030 |
| Case | 87638510 (this page, SPM-HEP-4434) |
All of these numbers are the same part.
Slow or no cranking
With good batteries and cables, a starter that turns slowly or only clicks is worn.
Grinding on engagement
Worn pinion or flywheel teeth grind on start. Check the ring gear when fitting a new starter.
Intermittent starting
Worn brushes and solenoid contacts make starting hit and miss.
Fleet spares
A spare starter keeps a machine working while the old one is rebuilt or scrapped.
We check what other aftermarket sellers charge for this same part. Their prices on the date we checked:
| Seller | Price | Checked |
|---|---|---|
| eBay (8 aftermarket sellers) | USD 169.00 to 279.50 | 29 Oct 2026 |
| BuyMachineryParts | USD 232.00 | 29 Oct 2026 |
| FridayParts | USD 243.60 | 29 Oct 2026 |
| FarmPartsStore | USD 421.51 | 29 Oct 2026 |
| Spare Part Mart | USD 135.20 | Today |
Our price of USD 135.20 is 20% to 68% 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.
No. It is an aftermarket part made to fit in place of Denso 428000-6030. It is not made by or affiliated with Denso; the Denso part number is used only to show what it replaces.
It fits Case 420, 430, 435, 440, 445, 450 and 465 skid steers, TR270, TR320 and TV380, and New Holland L180 to L230 and C185 to C238 loaders. Machines change parts between serial number ranges, so check the number on your old part or in your parts manual.
It has the same mounting and electrical connector as the original. Check the plug and terminals match your old part, and test it before putting the machine back to work.
Yes, we ship worldwide. Shipping is calculated at checkout, and every order is covered by our 30 day money back guarantee and price beat guarantee.
Prices depend on your ZIP or postcode.
Live rates for the quantity selected, delivered to your door. Confirmed at checkout.
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