Cummins 4366046 is the heavy duty starter motor with a mounted solenoid, a three bolt flange drive housing and an exposed pinion. It is used on Cummins QSZ13 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.
Technical properties & sizes
Specifications
| Part Type |
Starter Motor |
| Replaces |
Cummins 4366046 |
| Engine |
Cummins QSZ13, ISZ13 |
| Fits |
Cummins QSZ13 and ISZ13 engines |
| Condition |
New, aftermarket |
| Stat. HS-Code |
851140 |
| Country of Manufacture |
China |
Compatibility
Cummins machines
Cummins QSZ13 and ISZ13 engines
Check the part number on your old unit before ordering.
Part numbers
| Cummins Part No.(SPM Part No.)
|
Fits |
|
4366046(SPM-HEP-4663)
|
Cummins QSZ13 and ISZ13 engines |
Use cases and applications
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 QSZ13 and ISZ13 engines. The full list is in the tables above.
Price beat guarantee
We check what other aftermarket sellers charge for this same part. Their prices on the date we checked:
| Seller |
Price |
Checked |
| Diselmart |
USD 387.00 |
31 Oct 2026 |
| SINOCMP |
USD 469.00 |
31 Oct 2026 |
| eBay, aftermarket seller |
USD 504.99 |
31 Oct 2026 |
| Spare Part Mart |
USD 375.20 |
Today |
Our price of USD 375.20 is 3% to 26% 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.
Frequently asked questions
Will it fit my Cummins QSZ13?
Yes, it was made for the Cummins QSZ13, and 1 more listed under compatible equipment. Check the old starter motor is marked 4366046 or one of the cross references, because makers change parts between serial ranges.
How often should I replace the starter motor on my Cummins QSZ13?
On the Cummins QSZ13, typically 5,000 to 10,000 hours, depending on how often the machine is started and how well the batteries are kept.
What are the signs the starter motor needs replacing?
Clicking with a good battery, slow cranking, grinding as it engages, or the starter staying engaged after the engine fires.
Should I check the ring gear?
Yes. Look at the flywheel teeth through the starter opening. Chewed teeth will damage the new pinion.
What should I check before fitting it?
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.
Is this a genuine Cummins 4366046?
No. It is an aftermarket starter motor made to replace the Cummins 4366046. It is not made by the original manufacturer; the number only shows what it replaces.