6150-21-6710 Engine Breather Cap supports crankcase ventilation for PC400 B2B excavator parts repair, engine maintenance, and wholesale sourcing.
The 6150-21-6710 Engine Breather Cap YNF18757 is supplied for compatible PC400 engine applications. It forms part of the crankcase ventilation arrangement, where blow-by gases generated during combustion are allowed to be vented through the corresponding engine breather path.
A correctly functioning engine breather is important because abnormal crankcase pressure can contribute to oil leakage around seals and gaskets or interfere with normal engine ventilation. A blocked, damaged, deformed, or contaminated breather component should therefore be inspected during engine servicing.
For B2B buyers, the 6150-21-6710 PC400 breather should be verified by part number, machine information, overall shape, mounting arrangement, connection positions, sealing interface, and existing-part photos before quantity purchasing. Accurate identification helps engine repair businesses and wholesalers reduce incorrect inventory, installation rework, customer claims, and unnecessary international freight.
| Parameter | Specification |
|---|---|
| YNF Part Number | YNF18757 |
| Part Number | 6150-21-6710 |
| Product Name | Engine Breather Cap |
| Alternative Name | Crankcase Breather / Breather Cover / Engine Vent Cover |
| Product Type | Crankcase Ventilation Component |
| Parts Category | Excavator Engine Parts |
| Machine Reference | PC400 |
| Main Function | Supports Crankcase Ventilation and Blow-By Gas Routing |
| Application | Diesel Engine Crankcase Ventilation System |
| Installation | Engine Breather / Crankcase Ventilation Area |
| Fitment Check | Part Number / Machine Model / Shape / Mounting / Connections / 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 |
|---|---|
| PC400 Excavator | Used in compatible engine breather configurations |
| Crankcase Ventilation | Supports routing of blow-by gases from the engine crankcase |
| Engine Pressure Management | Helps the crankcase ventilation system operate normally |
| Breather Replacement | Suitable when the existing component is damaged or blocked |
| Engine Overhaul | Can be inspected or replaced during major rebuilding |
| Oil Leak Diagnosis | Breather condition can be checked when abnormal crankcase pressure is suspected |
| Repair Workshop | Practical for professional diesel engine servicing |
| B2B Parts Stocking | Suitable for dealers, wholesalers, and importers |
Q: What is YNF18757?
A: It is an engine breather cap / crankcase breather component with reference number 6150-21-6710.
Q: Which machine is referenced?
A: The supplied machine reference is PC400.
Q: What does an engine breather do?
A: It supports crankcase ventilation by providing a path for blow-by gases generated during engine operation.
YNF Machinery supplies 6150-21-6710 engine breathers and related PC400 engine parts for excavator repair workshops, engine rebuilders, machinery dealers, wholesalers, and international importers.
The YNF18757 crankcase breather cap is a relatively compact engine component, but correct fitment remains important because mounting, sealing, and ventilation connections must correspond with the existing engine configuration.
Professional B2B buyers can provide the 6150-21-6710 part number, PC400 machine information, required quantity, mounting-side photos, connection details, dimensions, and clear images of the removed breather for confirmation.
Breather hoses, valve covers, gaskets, oil seals, filters, oil-system parts, and other excavator engine components can also be included in the same inquiry, helping distributors consolidate repair inventory and reduce fragmented international shipping costs.
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