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Cummins 5340908 is the starter motor with a mounted solenoid, a flanged drive end housing that encloses the pinion and a through bolted motor body. It is used on Cummins 4BT and 6BT 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 5340908 |
| Engine | Cummins 4BT 3.9, 6BT 5.9 |
| Fits | Cummins B series engines: 4BT 3.9 and 6BT 5.9 |
| 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 |
|---|---|
| 5340908(SPM-HEP-4662) | Cummins B series engines: 4BT 3.9 and 6BT 5.9 |
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 Cummins B series engines: 4BT 3.9 and 6BT 5.9. 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 |
|---|---|---|
| SINOCMP | USD 349.00 | 31 Oct 2026 |
| WDPART | USD 394.00 | 31 Oct 2026 |
| eBay, aftermarket seller | USD 431.88 | 31 Oct 2026 |
| Spare Part Mart | USD 284.78 | Today |
Our price of USD 284.78 is 18% to 34% 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 Cummins 5340908 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 Cummins 5340908. 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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