Reliable Excavator Solutions
High-precision engine speed control for heavy-duty earthmoving equipment. Compatible with 3863439 part numbers.
Are you looking for a durable 386-3439 (3863439) throttle motor? This essential component is engineered for the 300 series excavators to ensure precise fuel delivery and engine responsiveness.
| Field | Product Details |
|---|---|
| Model NO. | 320D2, 312D2, 313D2, 320D2 GC, 320D2 L |
| Product Name | Governor Stepping Throttle Motor |
| Part Number | 386-3439 / 3863439 |
| Type | Engine Speed Control System |
| Condition | Brand New, OEM Standard Replacement |
| MOQ | 1 Piece |
| Stock Status | In Stock / Fast Dispatch |
| Application | Engine rebuild, overhaul, maintenance |
| Payment Terms | T/T, Western Union, MoneyGram |
| Delivery Methods | Express: DHL Fedex EMS UPS or by Air/ Sea |
Choosing the right replacement for your 3863439 governor motor prevents engine stalling and ensures optimal fuel efficiency. Our parts meet or exceed rigorous field testing standards.
| Comparison Factor | Standard Replacement (Our Product) | Common Aftermarket Parts |
|---|---|---|
| 1. Build Quality | OEM-standard tri-metal structure for longevity | Thin-shell plastic or recycled aluminum |
| 2. Signal Accuracy | High-sensitivity feedback for instant throttle response | Lag in response, causing engine surging |
| 3. Durability | Trusted by repair shops & equipment fleets | Short lifespan under high-vibration conditions |
| 4. Installation | Plug-and-play fit for CAT 320D2 series | Modified wiring required for installation |
| 5. Environment Resistance | Heat-resistant seals for extreme engine heat | Prone to internal short circuits |
| 6. Value for Money | Balanced cost with 100% reliability guarantee | Cheap price but high hidden downtime costs |
Direct communication for bulk pricing and fast shipping details.
Contact WhatsApp: +8613532379052 Email Us: [email protected]Not sure how this issue affects your equipment?
Our team helps operators achieve maximum uptime by assisting with:
✔ Identify potential risks during maintenance routines for 312D2/320D2 models.
✔ Recommend suitable replacement parts based on your specific engine serial number.
✔ Support both inspection advice and professional parts supply for global fleets.
Q1: What are the symptoms of a failing 386-3439 motor?
A: Most operators notice erratic engine RPM, failure to reach high idle, or "Limp Mode" errors on the monitor. If your 320D2 does not respond to the throttle dial, the 3863439 stepping motor is likely the culprit.
Q2: Is this motor compatible with 320D2 GC models?
A: Yes, the 386-3439 is the standard part for 320D2 GC and 312D2 series machines equipped with C4.4 or C7.1 engines. It is a direct fit for 3863439.
Q3: Why Choose This Throttle Motor?
A: It features an OEM-standard tri-metal structure and is Trusted by repair shops & equipment fleets worldwide for its precision and resistance to harsh job site conditions.
We specialize in heavy-duty engine assemblies and high-performance components. Our core focus includes leading brands such as Cummins, Komatsu, Caterpillar, Isuzu, Kubota, Yanmar, and Weichai.
Our inventory covers everything from full engine rebuild kits to precision fuel systems. We provide premium Cylinder Liners, Pistons, Piston Rings, Crankshaft Main Bearings, Connecting Rod Bearings, Thrust Washers, Overhaul Gasket Kits, Fuel Injection Pumps, Injectors, Crankshafts, Turbochargers, Water Pumps, Oil Pumps, Cylinder Blocks, Cylinder Heads, and Connecting Rods.
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