Complete radiator hose set for PC100-5 / PC120-5, including upper (YNF04777) and lower (YNF04778) hoses.
Complete radiator hose set for PC100-5 and PC120-5 excavators
Includes YNF04777 (upper hose) and YNF04778 (lower hose)
Replaces OEM numbers 203-03-56180 (upper) and 203-978-5340 (lower)
Transfers hot coolant from engine to radiator and returns cooled coolant
High-quality reinforced rubber construction for durability
Resistant to heat, pressure, and vibration
The YNF04777 + YNF04778 Radiator Hose Set is designed for PC100-5 and PC120-5 excavators. The upper hose (YNF04777) transfers hot coolant from the engine to the radiator, while the lower hose (YNF04778) returns cooled coolant from the radiator back to the engine. Together, they ensure proper engine temperature regulation and prevent overheating.
Manufactured from reinforced rubber, both hoses resist heat, pressure, vibration, and long-term coolant exposure. Built to OEM standards, this set guarantees precise fitment, leak-proof sealing, and long service life for heavy-duty construction machinery.
| Parameter | Details |
|---|---|
| YNF Part Numbers | YNF04777 (Upper), YNF04778 (Lower) |
| OEM Reference Numbers | 203-03-56180 (Upper), 203-978-5340 (Lower) |
| Product Name | Radiator Hose Set |
| Machine Models | PC100-5, PC120-5 |
| Hose Type | Coolant / Water Hoses |
| Position | Upper + Lower |
| Material | Reinforced rubber |
| Function | Transfers hot coolant to radiator and returns cooled coolant |
| Installation Type | Direct replacement |
| Condition | New |
| Brand | YNF |
| Origin | China |
| MOQ | 1 Set |
| 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 upper and lower hoses |
| Construction Machinery | Complete radiator coolant circulation |
| Excavator Maintenance | Cooling system replacement |
| Heavy-Duty Equipment | Engine temperature regulation |
FAQs:
Which machines does this hose set fit?
PC100-5 and PC120-5
Which OEM numbers does it replace?
203-03-56180 (upper) and 203-978-5340 (lower)
Does this include both upper and lower hoses?
Yes, it’s a complete set
Is installation direct-fit?
Yes, OEM-standard
Minimum order quantity?
One set
The YNF04777 + YNF04778 Radiator Hose Set provides complete cooling system support for PC100-5 and PC120-5 excavators. Reinforced rubber construction ensures durability, leak-proof sealing, and OEM-standard fitment. This set guarantees stable engine cooling under heavy-duty working conditions, making it ideal for maintenance, repair, and replacement needs.
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