If your heavy machinery is experiencing irregular engine speed or failing to respond to throttle commands, the culprit is often a worn-out stepper motor. As a specialist in heavy equipment components, we provide the precision-engineered 409-451000006 (also known as 409451000006) throttle motor specifically for KATO excavator systems. This "Long Line" version ensures stable voltage transmission and accurate RPM control for demanding construction environments.
| Detail Property | Specifications |
|---|---|
| Model NO. | KATO HD820-3, HD820V, HD1023-3, HD512-3 |
| Product Name | Throttle Stepper Motor (Long Cable Version) |
| Part Number | 409-451000006 / 409451000006 |
| Type | Electric Governor Actuator |
| Condition | Brand New, OEM Standard Replacement |
| Application | Engine RPM Control, Overhaul, Maintenance |
| Payment Terms | T/T, Western Union, MoneyGram |
| Delivery Methods | Express (DHL, Fedex, EMS, UPS), Air or Sea Freight |
| Stock Status | In Stock / Fast Dispatch |
| Core Purchase Points | Our OEM Standard Replacement | Generic Aftermarket Parts |
|---|---|---|
| Internal Core | High-precision copper coils & Japanese chips | Standard aluminum or low-grade copper |
| Cable Quality | High-temperature resistant "Long Line" wiring | Short or thin insulation prone to melting |
| Response Time | Millisecond response to ECU signals | Delayed or stuttering throttle adjustment |
| Seal Integrity | IP67 rated dust and water protection | Basic plastic housing with poor sealing |
| Installation | 100 percent plug-and-play fitment | Requires modification or bracket adjustment |
| Service Life | Tested for 50,000+ cycle durability | High failure rate after 3-6 months |
Is your KATO HD820-3 showing error codes related to the governor actuator? Common symptoms of a failing 409-451000006 motor include:
Engine stuck at idle despite throttle dial adjustment.
Unusual grinding noise from the motor housing area.
Sudden engine shutdown during heavy lifting.
Our team helps operators Identify potential risks during maintenance and Recommend suitable replacement parts if needed. We support both inspection advice and parts supply to keep your fleet moving.
Our version features an OEM-standard tri-metal structure and is trusted by repair shops & equipment fleets worldwide. It offers the perfect balance between original performance and cost-efficiency.
Yes, our assembly is designed to match the factory geometry of KATO HD series excavators, ensuring the throttle cable pulls at the correct tension immediately after installation.
Check the serial plate on your motor. If it reads 409-451000006 or the machine is a KATO HD820-3, this is the exact match. If unsure, Send Your Part Number to our experts for verification.
Immediate assistance available via WhatsApp and Email:
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We are a leading provider of engine components for Cummins, Komatsu, Caterpillar, Isuzu, Kubota, Yanmar, and Weichai. Our expertise covers complete engine assemblies and precision overhaul parts.
Not sure how this issue affects your equipment? Our team is ready to help.
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