No Products in the Cart
SPM-HEP-4239 is the 24 volt starter motor with 11 tooth pinion, solenoid, relay and mounting flange. It is used on Mitsubishi 6D31 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.
It replaces Mitsubishi M2T78381 and Mitsubishi ME087590.
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 | Mitsubishi M2T78381 |
| Voltage | 24 V |
| Rated power | 5.5 kW |
| Pinion | 11 teeth |
| Cross references | Mitsubishi ME087590 |
| Fits | Mitsubishi 6D31 engines, including Kato HD700-5 and Kobelco SK200 excavators |
| Condition | New, aftermarket |
| Stat. HS-Code | 851140 |
| Country of Manufacture | China |
Mitsubishi machines
Check the part number on your old unit before ordering.
| Mitsubishi Part No.(SPM Part No.) | Fits |
|---|---|
| M2T78381(SPM-HEP-4239) | Mitsubishi 6D31 engines, including Kato HD700-5 and Kobelco SK200 excavators |
| Brand | Part No. |
|---|---|
| Mitsubishi | M2T78381 |
| Mitsubishi | ME087590 |
All of these numbers are the same part.
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 |
|---|---|---|
| Buycarparts (AS-PL) | USD 247.23 | 25 Oct 2026 |
| FridayParts | USD 267.68 | 25 Oct 2026 |
| Amazon (Jianshi Ningzhi International Trade Co., Ltd) | USD 283.04 | 25 Oct 2026 |
| Amazon (David-Store) | USD 320.33 | 25 Oct 2026 |
| Spare Part Mart | USD 197.78 | Today |
Our price of USD 197.78 is 20% to 38% 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 Mitsubishi M2T78381. It is not made by or affiliated with Mitsubishi; the Mitsubishi part number is used only to show what it replaces.
It fits Mitsubishi 6D31 engines, including Kato HD700-5 and Kobelco SK200 excavators. 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.
Join 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. Turn points into a discount whenever you like.
Opens the Marty Mates panel. No password: you enter your email, we send a code, and that is you in with your 200 points waiting. Joining signs you up to our emails and you can leave any time from the link in any of them. See our terms and conditions.
Member deals, specials before they go public, and easy ways to stack up points. Plus a nudge when a part you bought is due, so you are not caught out mid job.
You can leave any time from the link in any email we send. See our terms and conditions.
We will only bother you when it is worth it: a member deal, a specials drop, a way to earn points faster, or a heads up that a part you bought is due.
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.
