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Cummins 4944703 is the 24 V heavy duty starter motor with a mounted solenoid and relay, a flanged drive end housing and an exposed pinion. It is used on Cummins 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.
The same part is also sold as Cummins 5403868.
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 4944703 |
| Voltage | 24 V |
| Engine | Cummins 6BT 5.9 |
| Cross references | Cummins 5403868 |
| Fits | Cummins 6BT 5.9 diesel 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 |
|---|---|
| 4944703(SPM-HEP-4665) | Cummins 6BT 5.9 diesel engines |
| 5403868(SPM-HEP-4665) | Cummins 6BT 5.9 diesel engines |
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 6BT 5.9 diesel engines.
We check what other aftermarket sellers charge for this same part. Their prices on the date we checked:
| Seller | Price | Checked |
|---|---|---|
| Fab Heavy Parts | USD 298.77 | 2 Nov 2026 |
| eBay, aftermarket seller | USD 307.00 | 31 Oct 2026 |
| Buy Machinery Parts | USD 393.19 | 2 Nov 2026 |
| SINOCMP | USD 439.00 | 31 Oct 2026 |
| Spare Part Mart | USD 214.99 | Today |
Our price of USD 214.99 is 28% to 51% 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 4944703 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.
Yes. Look at the flywheel teeth through the starter opening. Chewed teeth will damage the new pinion.
No. It is an aftermarket starter motor made to replace the Cummins 4944703. 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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