7Y-1889 Radiator Cap supports coolant sealing and pressure control for E320C E320D B2B excavator parts replacement and stocking.
The 7Y-1889 Radiator Cap YNF17586, with JG-A004-005 supplied as an additional reference, is used on compatible E320C and E320D excavator cooling systems. The radiator filler neck is sealed by the cap, while cooling-system pressure is managed according to the cap and radiator configuration.
Although a radiator cap is a small component, its condition can affect coolant retention and overall cooling-system operation. A damaged sealing surface, weakened internal mechanism, or incorrect cap specification may contribute to coolant loss or abnormal system behavior.
For B2B buyers, the 7Y-1889 radiator cap should be checked by reference number, machine model, cap dimensions, filler-neck interface, sealing structure, and existing-part photos. The required pressure specification should also be compared with the removed cap before ordering. Accurate verification helps reduce incorrect inventory, installation mismatch, customer claims, and repeat international freight.
| Parameter | Specification |
|---|---|
| YNF Part Number | YNF17586 |
| Reference Number 1 | 7Y-1889 |
| Reference Number 2 | JG-A004-005 |
| Product Name | Radiator Cap |
| Alternative Name | Water Tank Cap / Coolant Cap / Radiator Pressure Cap |
| Product Type | Cooling System Sealing Component |
| Parts Category | Excavator Cooling System Parts |
| Machine Reference | E320C / E320D |
| Main Function | Radiator Sealing and Cooling-System Pressure Management |
| Application | Excavator Engine Cooling System |
| Installation | Radiator Filler Neck |
| Fitment Check | Part Number / Cap Size / Filler Neck / Sealing Structure / Pressure Specification / Existing Part 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 |
|---|---|
| E320C Excavator | Used on compatible radiator filler-neck configurations |
| E320D Excavator | Suitable for compatible engine cooling systems |
| Radiator Sealing | Helps coolant be retained within the cooling circuit |
| Pressure Management | Supports cooling-system pressure control according to cap specification |
| Cooling System Repair | Suitable when the existing cap is damaged or sealing poorly |
| Radiator Service | Can be replaced during radiator maintenance |
| Fleet Maintenance | Practical as a commonly serviced cooling-system spare |
| B2B Parts Stocking | Suitable for dealers, wholesalers, and repair workshops |
Q: What is YNF17586?
A: It is a radiator cap supplied with references 7Y-1889 and JG-A004-005.
Q: Which machines are referenced?
A: The supplied machine references are E320C and E320D.
Q: Does the radiator cap only prevent coolant leakage?
A: No. In addition to sealing the filler neck, cooling-system pressure is managed according to the cap design.
YNF Machinery supplies 7Y-1889 / JG-A004-005 radiator caps and related excavator cooling-system parts for repair workshops, machinery dealers, wholesalers, fleet operators, and international importers.
The YNF17586 radiator cap is a small and economical replacement item that can be conveniently stocked together with radiators, hoses, thermostats, water pumps, and other cooling parts. For distributors, maintaining suitable radiator-cap stock can help meet common workshop replacement demand without occupying significant warehouse space.
Professional buyers can provide the 7Y-1889 or JG-A004-005 reference, E320C/E320D machine information, required quantity, cap dimensions, pressure marking, filler-neck photos, and existing-cap images for confirmation.
Mixed orders of radiator caps and other excavator parts for cooling systems can also be consolidated to simplify B2B purchasing and shipment planning.
