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Cummins 5286774 is the 24 volt starter motor with solenoid, drive housing and pinion. It is used on Cummins 4B3.9 and ISB5.9 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 | Cummins 5286774 |
| Voltage | 24 V |
| Fits | Cummins 4B3.9, ISB3.9 and ISB5.9 engines |
| Condition | New, aftermarket |
| Stat. HS-Code | 851140 |
| Country of Manufacture | China |
Cummins machines
Check the part number on your old unit before ordering.
| Cummins Part No.(SPM Part No.) | Fits |
|---|---|
| 5286774(SPM-HEP-4424) | Cummins 4B3.9, ISB3.9 and ISB5.9 engines |
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 |
|---|---|---|
| FridayParts | USD 300.29 | 26 Oct 2026 |
| eBay (5 aftermarket sellers) | USD 403.64 to 799.68 | 26 Oct 2026 |
| SINOCMP | USD 419.00 | 30 Oct 2026 |
| WDPart | USD 473.00 | 30 Oct 2026 |
| Spare Part Mart | USD 240.23 | Today |
Our price of USD 240.23 is 20% to 70% 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 Cummins 5286774. It is not made by or affiliated with Cummins; the Cummins part number is used only to show what it replaces.
It fits Cummins 4B3.9, ISB3.9 and ISB5.9 engines. 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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Join Marty Mates and we put 200 points on your account, worth $10 off an order over $75 USD. Then a point for every dollar you spend after that.
No password: you enter your email, we send a code, and that is you in.
