3089943 Lower Radiator Hose supports ZAX450/ZAX460/ZAX480 cooling repair for B2B excavator parts replacement, stocking, and wholesale sourcing.
The 3089943 Lower Radiator Hose YNF03937 is supplied for compatible ZAX450, ZAX460, and ZAX480 excavator engine cooling systems. It is installed in the lower radiator circuit, where coolant is transferred between the radiator and the corresponding engine-side cooling connection.
On large excavators, cooling hoses are exposed to continuous vibration, high coolant temperatures, pressure changes, and long operating cycles. Aging hoses may become hardened, swollen, cracked, or weakened around the connection areas, increasing the possibility of coolant leakage and unexpected downtime.
For B2B buyers, the 3089943 lower radiator hose should be verified by part number, exact machine model, molded routing shape, overall length, bend positions, connection diameters, and existing-hose photos before quantity purchasing. Correct physical matching is especially important for large molded hoses because visually similar hoses may follow different installation paths. Accurate verification helps reduce wrong inventory, installation delays, customer claims, and repeat freight.
| Parameter | Specification |
|---|---|
| YNF Part Number | YNF03937 |
| Part Number | 3089943 |
| Product Name | Lower Radiator Hose |
| Alternative Name | Lower Coolant Hose / Bottom Radiator Hose / Lower Water Hose |
| Product Type | Engine Cooling System Hose |
| Parts Category | Excavator Cooling System Parts |
| Machine Reference | ZAX450 / ZAX460 / ZAX480 |
| Hose Position | Lower Radiator Circuit |
| Main Function | Transfers Coolant Through the Lower Cooling Circuit |
| Application | Heavy Excavator Engine Cooling System |
| Installation | Radiator-to-Engine Lower Cooling Connection |
| Working Medium | Engine Coolant |
| Fitment Check | Part Number / Machine Model / Hose Shape / Length / Bend Position / End Diameter / Existing Hose Photo |
| Quality Type | Aftermarket Replacement |
| Condition | New |
| Brand | YNF |
| Origin | China |
| MOQ | 1 Piece |
| Shipping Method | Air, Sea, Express |
| Payment Terms | T/T, PayPal, Western Union |
| Application | Description |
|---|---|
| ZAX450 Excavator | Used in compatible lower radiator cooling circuits |
| ZAX460 Excavator | Suitable for the supplied machine reference |
| ZAX480 Excavator | Used in compatible heavy excavator cooling systems |
| Cooling System Overhaul | Suitable when radiator hoses are renewed during major service |
| Radiator Replacement | Can be replaced while the radiator assembly is removed |
| Coolant Leak Repair | Suitable when aging or damaged hose sections are identified |
| Fleet Maintenance | Practical for planned heavy-equipment cooling service |
| B2B Parts Stocking | Suitable for dealers, wholesalers, and repair suppliers |
Q: Which machines are referenced?
A: The supplied references are ZAX450, ZAX460, and ZAX480.
Q: Where is the hose installed?
A: It is installed in the lower section of the compatible radiator cooling circuit.
Q: What should be checked before ordering?
A: Part number, machine model, hose routing, bend positions, overall length, end diameters, and existing-part photos should be verified.
YNF Machinery supplies 3089943 lower radiator hoses and related ZAX450, ZAX460, and ZAX480 cooling-system parts for excavator workshops, mining equipment maintenance businesses, fleet operators, dealers, wholesalers, and international importers.
The YNF03937 lower coolant hose is a fitment-sensitive molded component. For B2B buyers, hose routing, end diameters, bend positions, and overall dimensions should be checked carefully because large excavator radiator hoses can appear similar while fitting different cooling-system layouts.
Professional buyers can provide the 3089943 part number, exact machine model, required quantity, hose-end measurements, routing photos, and clear images of the removed hose for confirmation.
Radiators, upper radiator hoses, coolant tanks, radiator caps, thermostats, water pumps, fans, and other cooling-system components can also be consolidated into the same inquiry to simplify sourcing and reduce fragmented international shipment costs.
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