Reliable engine speed control is critical for excavator productivity. We provide premium quality 4257163 and 4188762 throttle motors designed specifically for Hitachi EX200-2 and EX200-3 series. Whether you are performing a routine maintenance or an urgent engine rebuild, our OEM-standard replacement parts ensure your equipment returns to peak performance instantly.
| Detail Field | Specifications Data |
|---|---|
| Part Number | 4257163 / 4188762 (Alt: 4257163, 4188762) |
| Model NO. | Hitachi EX200-2, EX200-3, EX120-2, EX120-3, EX60-2, EX60-3 |
| Product Name | Excavator Throttle Motor / Accelerator Stepper Motor |
| Condition | Brand New, OEM Standard Replacement |
| Application | Engine Speed Control, Maintenance, Overhaul |
| Payment Terms | T/T, Western Union, MoneyGram |
| Delivery Methods | Express (DHL, Fedex, EMS, UPS), Air Freight, Sea Freight |
| Stock Status | In Stock / Fast Dispatch |
| MOQ | 1 Piece |
| Feature | Our Replacement (OEM Std) | Low-Cost Alternatives |
|---|---|---|
| 1. Internal Sensor | High-precision Japanese imported sensors | Generic low-accuracy sensors |
| 2. Core Material | Pure copper coil with high thermal resistance | Aluminum or low-grade copper alloy |
| 3. Housing Durability | Heavy-duty alloy shell, anti-corrosion | Thin recycled plastic or light metal |
| 4. Plug & Play | 100% matched harness connector | May require wiring modification |
| 5. Response Speed | Milliseconds latency for smooth acceleration | Sluggish response, engine surging |
| 6. Service Life | Designed for 10,000+ working hours | Short lifespan, frequent failures |
A failing throttle motor 4257163 can lead to erratic engine RPM, loss of power, or complete failure to start. Our team helps operators:
Identify potential risks during maintenance to prevent costly downtime.
Recommend suitable replacement parts based on your specific machine serial number.
Support both inspection advice and global parts supply for Hitachi fleets.
If your EX200-2 is experiencing throttle linkage issues, replacing the 4188762 motor is often the most cost-effective solution compared to expensive dealer repairs.
Q1: What are the symptoms of a bad 4257163 throttle motor on an EX200-3?
A: The most common signs include the engine stuck at idle, inability to reach full throttle, or the "Learning" process failing on the monitor. If the motor makes a grinding noise, the internal gears are likely stripped.
Q2: Why Choose This Accelerator Motor?
A: Our motors feature an OEM-standard tri-metal structure for the internal gears and are Trusted by repair shops & equipment fleets worldwide for their longevity and stability under high-heat conditions.
Q3: How do I install the 4188762 motor correctly?
A: Ensure the linkage rod is adjusted to the correct length before connecting power. Most Hitachi systems require a throttle calibration (learning) via the control panel after installation to sync the motor stroke with the fuel injection pump.
We specialize in heavy-duty engine assemblies and components for world-leading brands. Beyond throttle motors, we provide a full range of parts for Cummins, Komatsu, Caterpillar, Isuzu, Kubota, Yanmar, and Weichai engines.
Our core inventory includes:
Engine Overhaul Kits, Cylinder Liners, Pistons, Piston Rings
Crankshaft Bearings, Connecting Rod Bearings, Thrust Washers
Fuel Injection Pumps, Injectors, Turbochargers, Water Pumps, Oil Pumps
Cylinder Blocks, Cylinder Heads, Crankshafts, Connecting Rods
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