540-7019 Hydraulic Tank Breather provides filtered reservoir ventilation for E320GC B2B excavator parts maintenance, replacement inventory, and wholesale sourcing.
The 540-7019 Hydraulic Tank Breather YNF18634 is used on a compatible E320GC hydraulic oil reservoir to support filtered air exchange as hydraulic fluid level changes during machine operation. It combines the tank breather function with a cap-style installation suitable for the corresponding reservoir configuration.
When hydraulic cylinders extend and retract, oil volume inside the reservoir changes and air movement is required. The breather allows this ventilation to occur while helping reduce the entry of airborne dust and other external contamination. Proper reservoir breathing also helps unnecessary pressure or vacuum conditions be limited within the hydraulic tank.
For B2B buyers, the 540-7019 hydraulic reservoir breather should be verified by part number, E320GC machine reference, cap diameter, mounting structure, sealing configuration, breather design, and existing-part photos. Filtration rating should not be assumed unless confirmed. Accurate matching helps reduce installation problems, incorrect stock, customer returns, and repeated international freight.
| Parameter | Specification |
|---|---|
| YNF Part Number | YNF18634 |
| Part Number | 540-7019 |
| Product Name | Hydraulic Tank Breather Cap |
| Alternative Name | Hydraulic Reservoir Breather / Oil Tank Breather Filter / Tank Vent Cap |
| Product Type | Reservoir Ventilation and Filtration Component |
| Parts Category | Excavator Hydraulic System Parts |
| Machine Reference | E320GC |
| Main Function | Filtered Hydraulic Reservoir Air Exchange |
| Application | Excavator Hydraulic Oil Tank |
| Installation | Hydraulic Reservoir Breather / Cap Position |
| Working System | Hydraulic Oil Reservoir |
| Filtration Rating | To Be Confirmed |
| Fitment Check | Part Number / Cap Diameter / Mounting / Seal / Breather Structure / 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 |
|---|---|
| E320GC Excavator | Used on compatible hydraulic reservoir configurations |
| Hydraulic Tank Ventilation | Allows air movement as reservoir oil volume changes |
| Airborne Contamination Control | Helps reduce dust entering through the ventilation path |
| Reservoir Maintenance | Suitable for inspection during hydraulic tank servicing |
| Breather Replacement | Used when the original cap or breather becomes damaged or contaminated |
| Hydraulic Oil Service | Can be checked during hydraulic fluid replacement |
| Fleet Maintenance | Practical for preventive excavator servicing |
| B2B Parts Stocking | Suitable for dealers, wholesalers, and repair suppliers |
Q: Which machine is referenced?
A: The supplied machine reference is E320GC.
Q: What does a hydraulic tank breather do?
A: It allows controlled air exchange as hydraulic oil level changes while helping airborne contamination be filtered.
Q: Is this the same as a hydraulic return filter?
A: No. A return filter cleans hydraulic oil, while the tank breather filters air entering through the reservoir ventilation path.
YNF Machinery supplies 540-7019 hydraulic tank breathers and related E320GC hydraulic maintenance parts for excavator workshops, fleet operators, dealers, wholesalers, and international importers.
The YNF18634 breather cap is a compact but important hydraulic reservoir service component. For buyers operating in dusty construction or mining environments, reservoir ventilation parts should be inspected regularly because contamination around the breathing path can affect hydraulic oil cleanliness.
Professional B2B buyers can provide the 540-7019 part number, E320GC machine information, required quantity, cap measurements, mounting details, sealing structure, and clear photos of the existing breather for fitment confirmation.
Hydraulic return filters, suction filters, pilot filters, reservoir caps, hydraulic hoses, seal kits, and other maintenance components can also be consolidated into the same inquiry to simplify sourcing and reduce fragmented shipment costs.
