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Komatsu 600-813-3320 is the 24 V reduction starter: a silver nose housing with a two hole flange, a black field frame and an offset solenoid with its lead. It is used on Komatsu PC120-6 excavators. 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 Komatsu 600-813-4421.
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 | Komatsu 600-813-3320 |
| Voltage | 24 V |
| Engine | Komatsu 4D95 |
| Cross references | Komatsu 600-813-4421 |
| Fits | Komatsu 4D95 engines in PC100-6, PC120-6 and PC200-5 excavators |
| Condition | New, aftermarket |
| Stat. HS-Code | 851140 |
| Country of Manufacture | China |
Komatsu machines
Check the part number on your old unit before ordering.
| Komatsu Part No.(SPM Part No.) | Fits |
|---|---|
| 600-813-3320(SPM-HEP-4593) | Komatsu 4D95 engines in PC100-6, PC120-6 and PC200-5 excavators |
| 600-813-4421(SPM-HEP-4593) | Komatsu 4D95 engines in PC100-6, PC120-6 and PC200-5 excavators |
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 Komatsu 4D95 engines in PC100-6, PC120-6 and PC200-5 excavators. 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 |
|---|---|---|
| BuyMachineryParts | USD 179.99 | 1 Nov 2026 |
| eBay (7 aftermarket sellers) | USD 182.95 to 322.53 | 31 Oct 2026 |
| KuduParts | USD 255.00 | 1 Nov 2026 |
| Yem Parts | USD 262.59 | 1 Nov 2026 |
| FridayParts | USD 308.76 | 1 Nov 2026 |
| SINOCMP | USD 369.00 | 31 Oct 2026 |
| Spare Part Mart | USD 164.76 | Today |
Our price of USD 164.76 is 8% to 55% 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 Komatsu 600-813-3320 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.
Yes. Look at the flywheel teeth through the starter opening. Chewed teeth will damage the new pinion.
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 Komatsu 600-813-3320. It is not made by the original manufacturer; the number only shows what it replaces.
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