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Doosan 300513-00008 is the electric throttle motor (governor actuator) that moves the engine fuel lever to the speed set on the cab dial. It is used on Doosan Daewoo DH -7 series crawler 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 Doosan 523-00008.
Sold as one unit. Check the number on your old part, or in the parts manual for your machine, before ordering.
| Part Type | Throttle Motor |
| Replaces | Doosan 300513-00008 |
| Housing | Square |
| Cable | Long single throttle cable with ball joint end |
| Cross References | Doosan 523-00008 |
| Fits | Doosan DH225-7; Doosan DH300-7; Doosan DH370-7; Doosan DH420-7; Doosan DH500-7 |
| Condition | New, aftermarket |
| Stat. HS-Code | 850110 |
Doosan machines
Check the part number on your old unit before ordering.
| Doosan Part No.(SPM Part No.) | Fits |
|---|---|
| 300513-00008(SPM-HEP-2979) | Doosan DH225-7, Doosan DH300-7, Doosan DH370-7, Doosan DH420-7, Doosan DH500-7 |
| Brand | Part No. |
|---|---|
| Doosan | 300513-00008 (this page, SPM-HEP-2979) |
| Doosan | 523-00008 |
All of these numbers are the same part.
| Brand | Part No. |
|---|---|
| Doosan | 300513-00008 (this page, SPM-HEP-2979) |
| Doosan | 523-00008 |
All of these numbers are the same part.
Engine speed does not follow the dial
When turning the engine speed dial does nothing, or the engine stays at idle or at full speed, the throttle motor or its cable is the usual cause once the dial and controller check out.
Surging or unsteady engine speed
Worn gears or a failing position feedback inside the motor make the engine speed hunt up and down. A new motor brings back a steady speed at every dial setting.
Throttle fault codes
A throttle motor fault on the monitor points to the motor, its plug or the wiring. Check the connector and loom for damage before replacing the motor.
Fitting tips
Note where the cable sits at idle and at full speed before removing the old motor, set the new cable to the same stroke, and run the machine maker's idle or throttle calibration if the machine has one.
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 104.95 to 134.66 | 6 Oct 2026 |
| SINOCMP | USD 159.00 | 6 Oct 2026 |
| Fab Heavy Parts | USD 171.82 | 6 Oct 2026 |
| MyMROmarts | USD 343.24 | 6 Oct 2026 |
| Spare Part Mart | USD 83.96 | Today |
Our price of USD 83.96 is 20% to 76% 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 Doosan 300513-00008. It is not made by or affiliated with Doosan; the Doosan part number is used only to show what it replaces.
It fits Doosan DH225-7; Doosan DH300-7; Doosan DH370-7; Doosan DH420-7; Doosan DH500-7. 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 postcode.
In USD for the quantity selected. The exact cost is confirmed at checkout.
