Premium Replacement Parts for EX200-2 and EX200-3 Excavators
Reliable operation of your Hitachi EX200-2 or EX200-3 excavator depends on precise engine speed control. The 4257164 (also identified as 4257164 without symbols) throttle motor positioner is a critical component that ensures the electronic control unit (ECU) accurately manages the fuel injection and engine RPM.
Whether you are performing a full engine overhaul or routine maintenance, using a high-precision replacement part prevents erratic engine behavior and optimizes fuel efficiency. We provide OEM standard replacements that meet the rigorous demands of construction environments.
| Field | Details |
|---|---|
| Model NO. | Hitachi EX200-2, EX200-3, EX220-2, EX220-3 |
| Product Name | Throttle Motor Positioner / Stepper Motor Sensor |
| Part Number | 4257164 |
| Type | Electrical Control System Component |
| Condition | Brand New, OEM Standard Replacement |
| Payment Terms | T/T, Western Union, MoneyGram |
| Delivery Methods | Express (DHL, Fedex, EMS, UPS), Air Freight, Sea Freight |
| MOQ | 1 Piece |
| Stock Status | In Stock / Fast Dispatch within 24-48 Hours |
| Packaging | Industrial Export Packing (Neutral or Branded) |
| Application | Engine rebuild, maintenance, and electronic system overhaul |
Choosing the right supplier for your 4257164 components can save thousands in downtime. Below is a comparison of our premium replacement vs. generic market options:
| Feature | Our Premium 4257164 Replacement | Generic Market Alternatives |
|---|---|---|
| 1. Signal Accuracy | High-fidelity linear output for stable RPM | Frequent signal drift leading to engine surges |
| 2. Material Quality | Heat-resistant composite housing and internal wiring | Low-grade plastic prone to cracking under heat |
| 3. Fitment | 100% Match for Hitachi EX200-2/3 series | Vague fitment requiring manual adjustment |
| 4. Service Life | Designed for 5,000+ working hours | Failure often occurs within 6 months |
| 5. Response Time | Instant feedback to the governor motor | Laggy response affecting hydraulic power |
| 6. Warranty Support | Comprehensive performance guarantee | No after-sales or limited "as-is" terms |
Our experts are ready to assist with your part number verification and global logistics.
Commonly, this is caused by a faulty 4257164 throttle motor positioner. If the sensor fails to send a correct voltage signal to the controller, the motor will not actuate the fuel pump lever. Check for continuity in the harness and verify the resistance values of the positioner.
Look for error codes on the monitor related to "Throttle Sensor" or "Governor Motor Signal." Physical symptoms include "hunting" (RPM fluctuating wildly) or the engine failing to shut down via the key switch.
OEM-standard tri-metal structure internals ensure durability against vibration. Our parts are Trusted by repair shops & equipment fleets globally for long-term reliability in Hitachi EX series excavators.
Not sure how this issue affects your equipment?
Our team helps operators:
✔ Identify potential risks during maintenance
✔ Recommend suitable replacement parts if needed
✔ Support both inspection advice and parts supply
We specialize in heavy-duty engine solutions and precision components. Our core inventory supports major brands including Cummins, Komatsu, Caterpillar, Isuzu, Kubota, Yanmar, and Weichai. From complete engine assemblies to the smallest seals, we ensure your machinery stays productive.
Cylinder Liner
Piston Kit
Piston Ring Set
Main Bearing
Con Rod Bearing
Thrust Washer
Full Overhaul Gasket Kit
Fuel Injection Pump
Fuel Injector
Crankshaft
Turbocharger
Water Pump
Oil Pump
Cylinder Block
Cylinder Head
Connecting Rod
EX200-3 Engine Overhaul Parts
Hitachi Excavator Electrical Spares
Isuzu 6BD1 Engine Rebuild Kit
Komatsu PC200-7 Engine Components
Caterpillar C7 Fuel System
Kubota V2403 Piston Set
Yanmar 4TNV98 Water Pump Replacement
Weichai WD615 Spare Parts
Excavator Throttle Controller Repair
Hitachi Step Motor Sensor Price
Aftermarket Excavator Parts Supplier
Heavy Equipment Sensor Maintenance
Engine Liner Kit for Isuzu
Crankshaft Grinding Specifications
Turbocharger Failure Diagnosis
Diesel Injector Calibration
Excavator Hydraulic Pump Seals
Main Bearing Clearance Check
Gasket Set for Excavator Overhaul
Hitachi OEM Electrical Parts
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