Products & Range Coverage
A&S MACHINERY CO., LTD. delivers an extensive inventory of specialized display units and precision operator terminals to support diverse heavy-duty equipment (e.g., CAT 770/775/777 mining trucks, 336/349 excavators, 980 loaders, and D6/D8 dozers):
• Machine & Protocol Compatibility: Engineered for a broad range of Caterpillar equipment series—covering early segmented LCD clusters up to modern high-resolution full-color touch monitors (such as Messenger screens and Advisor systems)—our parts ensure exact housing dimensions, mounting hole layouts, and multi-pin aviation plugs to guarantee a 100% perfect match for lossless plug-and-play installation.
• Complete Display Units & Terminals: 1. Multi-Function Color Monitors: Industrial-grade wide-temperature, high-brightness, anti-glare LCD panels displaying real-time engine speed, temperatures, fluid pressures, and diagnostic trouble codes (DTCs); 2. Combined Instrument Clusters: Integrated digital and analog display assemblies featuring status indicator light matrices and clear LCD viewing areas; 3. Protective Bezels & Keypads: Scratch-resistant, UV-blocking protective panels and tactile button rubber pads.
• OEM & Heavy-Duty Aftermarket: We offer certified original equipment manufacturer Caterpillar display terminals alongside rigorously tested heavy-duty aftermarket options verified through severe mining temperature and bench vibration tests, delivering exceptional display performance and extended operational lifespan at a cost-effective price point for global clients.
Supply Chain & Logistics
We maintain a robust operational infrastructure designed to support global machinery high-value sensitive glass and electronic terminal procurement through direct supply channels, delivering reliable stock availability and rapid dispatch to build trust with international buyers.
• Massive Inventory and Firmware Verification: We maintain large-volume stock of thousands of differing specifications of CAT mainstream machinery display monitors and monitor assemblies. Backed by barcode-enabled intelligent warehousing and heavy machinery parts databases, we guarantee precise matching and direct dispatch upon order confirmation to minimize equipment downtime caused by display screen blackouts preventing the monitoring of essential oil pressures and water temperatures.
• Suspension Anti-Shock and Moisture-Proof Packaging: We implement specialized industrial packaging standards for display liquid crystal panels vulnerable to impact cracking and delicate circuit boards vulnerable to electrostatic discharge, utilizing thick-wall anti-static shielding bags, high-density bubble column four-corner suspended wrapping, custom high-density pearl cotton molded inner linings, and thickened double-wall master cartons to ensure parts do not suffer screen breakage, electrostatic damage, or structural crushing deformation during transcontinental ocean or air transit.
• Consolidated Sourcing: We support overseas clients by consolidating instrument displays alongside matching engine overhaul kits, hydraulic pumps, joysticks, sensors, and wire harnesses into precise bundled shipments, maximizing container space utilization and significantly reducing international freight costs for overseas repair facilities.
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.
• Application-Specific Durability Solutions: We address common field issues in extreme working environments, such as open-pit quarry operations involving severe high-frequency bouncing, intense heat, and high humidity, where standard automotive screens experience thermal blackening from direct sunlight exposure and vibration-induced internal solder joint cracking. We also provide professional engineering upgrades, including wide-temperature anti-thermal liquid crystal panels, reinforced anti-vibration internal mainboard support structures, and IP65 waterproof and dustproof front faceplates.
• Troubleshooting and Maintenance Guidelines: We address common user concerns regarding non-responsive screens, boot freezes, or CAN bus communication faults (such as no-communication errors) by providing professional diagnostic and replacement guidance. This includes comprehensive power and network diagnostics helping technicians use multimeters to check constant power, ignition power, and ground voltages alongside twisted-pair CAN bus terminating resistors to isolate power supply faults from display unit failures. Furthermore, we guide technicians through firmware version verification and configuration matching, ensuring that multi-function monitors undergo proper machine parameter validation or script loading via diagnostic tools to restore correct sensor data readings.
• Expert Technical Support and Safety Guidelines: We provide technical documentation covering Caterpillar instrument cluster disassembly diagrams, waterproof plug anti-corrosion grease application specifications, and display self-test setup guides, assisting overseas technical personnel in maintaining standardized installations.
Call to Action & User Experience
Optimize your operator interface clarity and diagnostic tracking 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 Caterpillar machine model (such as CAT 777G, 336D, or 980H units), display monitor types (such as Messenger, Advisor, or LCD monitors), or original equipment manufacturer part numbers to lock onto target products instantly.
• RFQ and Bulk Electrical Quotation: Access our fast-response interactive channels providing one-click bill of materials uploads for fleet cabin instrument and display replacement lists to receive bundled assembly quotations and heavy-duty freight estimates, fulfilling heavy refurbishment and major upgrade procurement requirements for overseas mining sites, fleets, and repair shops.
• Consultation and Support: Utilize our around-the-clock professional technical support channels staffed by senior electrical and display system experts to assist overseas clients in verifying compatibility for legacy machine non-standard instrument upgrades or aftermarket replacements, ensuring cross-border procurement runs error-free.

OEM GENUINEIN STOCK
Display Monitor 307-7542 3077542 3077542 For Caterpillar CAT Engine 3126B 3176B 3176C 3196 3406E 3412 3412E 3508 3508B 3508C 3512 3512B 3512C 3516
A&SModel: 307-7542, 3077542, 3077542|Brand: A&S
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OEM GENUINEIN STOCK
Display Monitor CA2592171 259-2171 2592171 For Caterpillar CAT Engine 3126B 3176B 3176C 3196 3406E 3412 3412E 3508 3508B 3508C 3512 3512B 3512C 3516
A&SModel: CA2592171, 259-2171, 2592171|Brand: A&S
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OEM GENUINEIN STOCK
DX140 Monitor Display Panel 300426-00117 30042600117 For Doosan&Daewoo Excavator
A&SModel: 300426-00117, 30042600117|Brand: A&S
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OEM GENUINEIN STOCK
Engine Controller Module ECM ECU 372-2901 372-2901-00 372290100 For Caterpillar Truck 773F 844H 854K Loader 990H 992K 993K Engine C32 C27 C18
A&SModel: 372-2901, 3722901, 372-2901-00, 372290100|Brand: A&S
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OEM GENUINEIN STOCK
Gauge Monitor YN59E00004F1 LC59S00001F2 for Kobelco Excavator ED190LC SK160LC SK210LC SK250LC SK290LC SK330LC SK480LC
A&SModel: YN59E00017F1,YN17M01139P1,YN59E00004F1,LC59S00001F2|Brand: A&S
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OEM GENUINEIN STOCK
Gauge Panel 300426-00089 30042600089 for Doosan Daewoo Excavator DX225LC-3 DX300LC-3
A&SModel: 300426-00089,30042600089|Brand: A&S
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OEM GENUINEIN STOCK
Gauge Panel 300426-00175 for Doosan Daewoo Excavator DX225LC-3 DX300LC-3
A&SModel: 300426-00175,30042600175|Brand: A&S
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OEM GENUINEIN STOCK
Gauge Panel 539-00076E 53900076E 539-00076 53900076 for Doosan Daewoo Excavator DX255LC DX180LC DX140LC DX225LC DX160LC DX255LC(ERP) DX225NLC
A&SModel: 539-00076E,53900076E|Brand: A&S
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OEM GENUINEIN STOCK
Gauge Panel 539-00076E 53900076E 539-00076 53900076 for Doosan Daewoo Excavator DX220LC DX340LC DX420LC DX480LC DX300LC DX520LC
A&SModel: 539-00076E,53900076E|Brand: A&S
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OEM GENUINEIN STOCK
Gauge Panel LCD Monitor 300426-00154 30042600154 for Doosan DX300LC-V DX140-V
A&SModel: 300426-00154 30042600154|Brand: A&S
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OEM GENUINEIN STOCK
Instrument Panel Monitor 300426-00202 30042600202 300426-00202B 30042600202B For Doosan DX300 DX210
A&SModel: 300426-00202, 30042600202, 300426-00202B, 30042600202B|Brand: A&S
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OEM GENUINEIN STOCK
Membrane Switch Assy 21N6-20500 21N620500 21N6-20501 21N620501 for Hyundai Excavator R110-7
A&SModel: 21N6-20500,21N620500,21N6-20501,21N620501|Brand: A&S
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OEM GENUINEIN STOCK
Membrane Switch Assy 21N8-20502 21N820502 for Hyundai Excavator R210NLC-7 R290LC-7 R360LC-7
A&SModel: 21N8-20505,21N820505,21N8-20504,21N820504,21N8-20503,|Brand: A&S
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OEM GENUINEIN STOCK
Membrane Switch Assy 21N8-20503 21N820503 for Hyundai Excavator R370LC-7 R450LC-7 R500LC-7 R220LC-7 R340LC-7 R510LC-7
A&SModel: 21N8-20505,21N820505,21N8-20504,21N820504,21N8-20503,|Brand: A&S
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OEM GENUINEIN STOCK
Membrane Switch Assy 21N8-20504 21N820504 for Hyundai Excavator R290LC-7A R300LC-7 R305LC-7 R320LC-7 R320LC-7A R360LC-7A
A&SModel: 21N8-20505,21N820505,21N8-20504,21N820504,21N8-20503,|Brand: A&S
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