Lower radiator hose YNF04778 for PC100-5 and PC120-5, replacing OEM 203-978-5340.
Lower radiator hose for PC100-5 and PC120-5 excavators
Replaces OEM number 203-978-5340
Returns cooled coolant from radiator to engine
Maintains stable engine operating temperature
High-quality reinforced rubber construction
The YNF04778 Lower Radiator Hose is designed for PC100-5 and PC120-5 excavators. It returns cooled coolant from the radiator to the engine, ensuring proper coolant circulation, preventing overheating, and maintaining stable engine temperature during operation.
Made from reinforced rubber, this hose offers excellent resistance to high temperatures, internal pressure, vibration, and coolant exposure. Built to OEM specifications, YNF04778 ensures precise fitment, reliable sealing, and long service life in heavy-duty construction machinery.
| Parameter | Details |
|---|---|
| YNF Part Number | YNF04778 |
| OEM Reference Number | 203-978-5340 |
| Product Name | Lower Radiator Hose |
| Machine Models | PC100-5, PC120-5 |
| Hose Type | Coolant / Water Hose |
| Position | Radiator Lower |
| Material | Reinforced rubber |
| Function | Coolant return to engine |
| Installation Type | Direct replacement |
| Condition | New |
| Brand | YNF |
| Origin | China |
| MOQ | 1 Piece |
| Shipping Method | 1. Air 2. Sea 3. Express |
| Payment Terms | 1. T/T 2. PayPal 3. Western Union |
| Application Area | Description |
|---|---|
| PC100-5 / PC120-5 | Engine cooling lower hose |
| Construction Machinery | Radiator outlet coolant line |
| Excavator Maintenance | Cooling system replacement |
| Heavy-Duty Equipment | Engine temperature regulation |
FAQs:
Which machines does this hose fit?
PC100-5 and PC120-5
Which OEM number does it replace?
203-978-5340
Is this upper or lower hose?
Lower radiator hose
Is it direct-fit replacement?
Yes, OEM-standard
Minimum order quantity?
One piece
YNF04778 lower radiator hose ensures reliable coolant return performance for PC100-5 and PC120-5 excavators. Reinforced rubber construction provides durability, leak-proof sealing, and OEM-standard fitment for stable engine cooling under heavy-duty conditions.
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