Filters/Breather Filters

Products & Range Coverage
A&S MACHINERY CO., LTD. delivers an extensive inventory of specialized breather filters within our Filters catalog to support diverse heavy-duty equipment:
• Multi-Model & System Compatibility: Engineered for a broad range of Komatsu heavy-duty excavators, loaders, and bulldozers, our parts ensure exact thread profiles, interface dimensions, and valve thresholds for a 100% perfect match, lossless installation, and factory-grade venting performance.
• Complete Breather & Vent Filter Range: 1. Hydraulic Tank Breather Caps & Vent Filters: Integrated with multi-layer metal mesh or high-efficiency filter media to precisely filter air during thermal expansion and contraction cycles of hydraulic oil, preventing mineral dust intrusion into hydraulic circuits; 2. Crankcase Breather Elements & PCV Filters: Designed to effectively separate oil droplets from crankcase blow-by gas, maintain a micro-negative pressure inside the crankcase, and prevent oil leaks or intake pipe pooling; 3. Fuel & Transmission Breather Plugs: Engineered to block rain, moisture, and fine debris during fluid level fluctuations, ensuring absolute purity in fuel and transmission systems.
• OEM & Heavy-Duty Aftermarket: We offer certified original equipment manufacturer Komatsu breather assemblies alongside rigorous bench-tested aftermarket parts, delivering exceptional reliability and extended service lifespan at a cost-effective procurement point for global clients.

Supply Chain & Logistics
We maintain a robust operational infrastructure designed to support global breather filter procurement through direct supply channels, delivering reliable stock availability and rapid dispatch to build trust with international equipment owners and repair facilities.
• Massive Inventory and Thread Verification: We maintain large-volume stock of hundreds of differing specifications of Komatsu mainstream heavy-duty excavator and loader breathers and vent filters. Backed by barcode-enabled intelligent warehousing and Komatsu parts databases, we guarantee precise matching and immediate dispatch upon order confirmation to fulfill routine maintenance and rapid replacement needs for overseas fleet workshops and minimize equipment downtime.
• Moisture-Proofing and Boxed Protection: We implement specialized industrial packaging standards for breather filters featuring compact structures and delicate plastic or thin-walled metal components vulnerable to housing breakage, internal filter medium deformation, or moisture damage under heavy transit pressure, utilizing independent polyethylene moisture-proof sealed bags combined with high-strength individual rigid cardboard supports to completely isolate marine salt spray and humid air and prevent filter crushing, and backing these with thickened heavy-duty export corrugated outer cartons or fumigated solid wood packaging to ensure components do not suffer deformation or damage during ocean or air transit.
• Consolidated Sourcing: We support overseas clients by consolidating breather filters alongside matching hydraulic return filter elements, engine air filters, fuel filters, and fuel tank cap sealing gaskets into precise bundled maintenance kits, achieving a one-stop purchasing model that maximizes container space utilization and significantly reduces comprehensive logistics costs for overseas workshops.

Engineering Solutions & Technical Support
Our technical framework focuses on resolving field-level operational challenges to eliminate equipment downtime, moving beyond simple parts distribution to deliver comprehensive engineering and service capabilities for fluid system protection assets.
• Application-Specific Durability Solutions: We address common field issues in extreme jobsite environments, such as dusty open-pit quarries and high-humidity tropical mines where factory breather internal mesh elements clog completely with fine mineral dust within two weeks, causing hydraulic oil tanks to collapse inward from vacuum formation. We also provide professional engineering upgrades, including large-surface water-repellent dust-resistant filter media and heavy-duty reinforced breathers equipped with built-in umbrella rain caps.
• Troubleshooting and Maintenance Guidelines: We address common user concerns regarding cloudy emulsified hydraulic oil, unexplained heavy oil seepage around engine valve covers and crankshaft seals, or loud vacuum suction sounds upon opening hydraulic tank caps on Komatsu excavators by providing professional diagnostic and maintenance guidance. This includes emphasizing the mandatory execution of a maintenance protocol to inspect breathers every 250 hours during severe dust operations as part of routine servicing, prohibiting filter neglect that triggers chain mechanical failures, while also instructing technicians to observe breather exhaust states to evaluate engine piston ring wear and blow-by conditions and avoid overlooking major engine overhaul requirements.
• Expert Technical Support and Safety Guidelines: We provide technical documentation covering Komatsu breather installation torque specifications to prevent plastic thread stripping alongside dust cap orientation alignment guides, assisting overseas technical personnel in maintaining standardized installations.

Call to Action & User Experience
Optimize your machinery fluid system pressure regulation and routine maintenance reliability today by utilizing our interactive tools placed across strategic positions on our platform.
• Multi-Dimensional Intelligent Search and Specification Filtering: Benefit from advanced search functions supporting fast product filtering by Komatsu machine model (such as PC200-8, PC360-7, WA380, or D85), system types (such as hydraulic tank breathers, engine crankcase breathers, or fuel tank vents), or original equipment manufacturer part numbers to lock onto target products instantly.
• RFQ and Maintenance Kit Quotation: Access our fast-response interactive channels providing one-click bill of materials uploads for fleet Komatsu machinery routine maintenance spare lists, including breathers, filters, and seals, to receive bundled assembly quotations and international logistics freight estimates, fulfilling fleet workshop periodic maintenance and bulk spare parts reserve procurement requirements.
• Consultation and Support: Utilize our around-the-clock professional technical support channels staffed by senior Komatsu machinery parts and fluid system experts to assist overseas clients in verifying compatibility for legacy non-standard breather ports, replacement equivalents, and modification inquiries, ensuring cross-border procurement runs error-free.