11N7-43100 Lower Radiator Hose supports R290-7/R350-7 cooling maintenance for B2B excavator parts replacement, stocking, and wholesale sourcing.
The 11N7-43100 Lower Radiator Hose YNF19144 is supplied for compatible R290-7 and R350-7 excavator engine cooling systems. It is installed within the lower radiator circuit, where coolant is transferred between the radiator and the corresponding engine-side cooling connection.
During heavy machine operation, the hose is repeatedly exposed to hot coolant, engine vibration, pressure changes, and temperature cycling. Cracking, swelling, hardening, damaged hose ends, or leakage around clamped connections can indicate that replacement is required.
For B2B buyers, the 11N7-43100 Lower Radiator Hose should be verified by part number, exact machine model, molded routing, overall length, bend positions, inlet and outlet diameters, and existing-hose photos. Similar lower coolant hoses may use different routing geometry even when their appearance is close. Accurate checking before bulk purchasing helps reduce incorrect inventory, installation delays, customer claims, and repeated international freight.
| Parameter | Specification |
|---|---|
| YNF Part Number | YNF19144 |
| Part Number | 11N7-43100 |
| Product Name | Lower Radiator Hose |
| Alternative Name | Lower Coolant Hose / Bottom Radiator Hose / Lower Water Hose |
| Product Type | Molded Engine Cooling Hose |
| Parts Category | Excavator Cooling System Parts |
| Machine Reference | R290-7 / R350-7 |
| Hose Position | Lower Radiator Circuit |
| Main Function | Transfers Coolant Through the Lower Cooling Circuit |
| Application | Excavator Engine Cooling System |
| Installation | Lower Radiator-to-Engine Cooling Connection |
| Working Medium | Engine Coolant |
| Fitment Check | Part Number / Machine Model / Shape / Length / Bends / End Diameters / 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 |
|---|---|
| R290-7 Excavator | Used in compatible lower cooling circuits |
| R350-7 Excavator | Suitable for the corresponding supplied machine reference |
| Radiator Lower Circuit | Transfers coolant through the lower radiator connection |
| Cooling System Repair | Suitable when the original hose becomes cracked or deteriorated |
| Radiator Service | Can be renewed when the cooling package is serviced |
| Coolant Leak Repair | Used when leakage is found around hose or clamp areas |
| Fleet Maintenance | Practical for planned excavator cooling maintenance |
| B2B Parts Stocking | Suitable for dealers, wholesalers, and repair suppliers |
Q: What is YNF19144?
A: It is a lower radiator hose with reference number 11N7-43100.
Q: Which machines are referenced?
A: The supplied references are R290-7 and R350-7.
Q: Where is this hose installed?
A: It is installed in the lower section of the compatible engine cooling circuit.
YNF Machinery supplies 11N7-43100 lower radiator hoses and related R290-7 / R350-7 cooling-system parts for excavator workshops, fleet operators, machinery dealers, wholesalers, and international importers.
The YNF19144 lower coolant hose is a molded and fitment-sensitive maintenance component. For professional B2B buyers, the part number should be checked together with hose routing, bend orientation, connection diameters, and overall dimensions before quantity purchasing.
Buyers can provide the 11N7-43100 reference, exact machine model, required quantity, hose-end measurements, installation photos, and clear images of the removed hose for fitment confirmation.
Upper radiator hoses, radiators, coolant reservoirs, radiator caps, thermostats, water pumps, cooling fans, and related cooling-system parts can also be consolidated into the same inquiry to simplify procurement and reduce fragmented international shipping costs.
