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SKU:
NLT1Z03896
Ships for free in 2–4 business days.
John Deere Hitachi Excavator Throttle Stepper Motor 4257163 4188762
$248.99
In Stock
$248.99
Sale price
$248.99
Regular price
This electronic throttle stepper motor replaces 4257163 and 4188762 on compatible John Deere and Hitachi excavators.
Estimated delivery between
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
- John Deere 190, 450LC, 490E, 550LC, 750, 790ELC, 892, and 992ELC
- Hitachi EX100-2, EX100M-2, EX100WD-2, EX100-3 and EX100-3C
- Hitachi EX120-2 and EX120-3
- Hitachi EX200-2, EX200-3, EX200LC-3 and EX200H-3
- Hitachi EX220-2 and EX220-3
- Hitachi EX300-2, EX300-3, EX300LC-3, EX300H-3, EX300LCH-3 and EX300-3C
Product Overview
When the throttle dial moves but engine speed does not follow, or the machine hunts between speeds, the governor stepper motor may have failed after wiring and linkage are checked. This motor drives the throttle linkage according to the excavator controller.
Connector, arm position, and machine model must match because similar excavators can use different governor motors.
Key Features & Performance
- Electronic throttle-governor control
- Restores commanded engine-speed movement
- Connector and output arm for matching excavators
- Replacement for common 4257163 applications
- Built for heavy-equipment service
Replaces Part Numbers
- 4257163
- 4188762
Common Uses
- Repairing a throttle that will not respond
- Replacing a motor with stripped gears or a failed winding
- Correcting unstable engine speed traced to the governor actuator
Technical Specifications
- Product Type: Throttle stepper / governor motor
- Application: Excavator electronic engine-speed control
- Position: Engine throttle linkage
- Replacement Type: Aftermarket
Installation & Fitment
- Disconnect machine power before unplugging the motor
- Verify linkage moves freely before fitting a new actuator
- Set arm position and calibration to the service manual
- Clear and retest controller faults after installation
Compatibility Notice
Northline Parts does its best to list all known compatible models, but the correct part may fit an application not shown.
Model, production date, serial number, connector, dimensions, installed options, and previous repairs can affect fitment. Compare the original component and reference information before purchase.
Frequently Asked Questions
Q: Can a bad stepper motor cause low engine speed? A: Yes, if it cannot move the throttle arm. Linkage binding, wiring, and controller faults can cause the same symptom.
Q: Does it fit every EX200? A: No. Series and dash number matter; verify 4257163 or 4188762 and compare the connector and arm.
Q: Does it need calibration? A: Many machines require correct setup or learning of the throttle endpoints. Follow the service procedure.
Q: Should the linkage move freely before installing the motor? A: Yes. A binding throttle linkage can overload the new actuator, so correct mechanical resistance and verify the wiring first.
Q: Is this an original-equipment part? A: No. This is an aftermarket item. Brand, model, and part numbers identify fitment only; compare the original part and the listing details before ordering.
Part Summary
keywords: 4257163 throttle motor, 4188762 excavator stepper, Hitachi EX200 governor actuator, John Deere 490E throttle control, excavator engine speed motor
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, dimensions, and application before purchase.