No Products in the Cart
Komatsu 113900-0781 is the compact air conditioning amplifier in a black moulded case with a dark blue end plate, side locking clips and a white multi pin connector. It is used on Komatsu PC200-8M0 to PC220-8M0 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.
Sold as one unit. Check the number on your old part, or in the parts manual for your machine, before ordering.
| Part Type | Air Conditioner Controller |
| Replaces | Komatsu 113900-0781 |
| Machine | Komatsu PC200-8M0, PC210-8M0, PC220-8M0 |
| Function | Cab air conditioner control amplifier |
| Fits | Komatsu PC200-8M0, PC210-8M0 and PC220-8M0 excavators |
| Condition | New, aftermarket |
| Stat. HS-Code | 853710 |
| Country of Manufacture | China |
Komatsu machines
Check the part number on your old unit before ordering.
| Komatsu Part No.(SPM Part No.) | Fits |
|---|---|
| 113900-0781(SPM-HEP-5059) | Komatsu PC200-8M0, PC210-8M0 and PC220-8M0 excavators |
Fault codes and dead functions
When functions stop working together or the display shows controller faults, a failed controller is a common cause once wiring and connectors check out.
Water and impact damage
Controllers take knocks, vibration and water. A cracked or corroded unit fails soon after.
Quicker than repair
A replacement unit is quicker than repairing boards and components one at a time.
Fleet spares
A spare controller turns a breakdown into a swap.
We check what other aftermarket sellers charge for this same part. Their prices on the date we checked:
| Seller | Price | Checked |
|---|---|---|
| eBay (4 aftermarket sellers) | USD 129.99 to 147.66 | 2 Nov 2026 |
| SINOCMP | USD 169.00 | 2 Nov 2026 |
| Spare Part Mart | USD 103.99 | Today |
Our price of USD 103.99 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.
Yes, it was made for the Komatsu PC200-8M0, and 2 more listed under compatible equipment. Check the old controller is marked 113900-0781 or one of the cross references, because makers change parts between serial ranges.
On the Komatsu PC200-8M0, there is no fixed interval. It is changed when it fails, and many fail from water in the plug or chafed wiring rather than wear.
A fault code for this circuit, readings that jump or stay fixed, or a part that does not respond with power at the plug.
Yes. Many machines have 12 V and 24 V versions of the same controller. Check the old part or the machine plate before fitting.
Usually. Clear them after fitting and run the machine, so old codes are not mistaken for a new fault.
No. It is an aftermarket controller made to replace the Komatsu 113900-0781. 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.
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.
