Products & Range Coverage
A&S MACHINERY CO., LTD. delivers an extensive inventory of engine oil coolers, hydraulic oil radiators, and transmission oil coolers to support diverse mining truck, crawler bulldozer, wheel loader, and high-horsepower excavator requirements:
• Machine & Powertrain System Compatibility: Engineered for a broad range of Caterpillar heavy equipment—including heavy-duty engines (e.g., CAT C15, C18, 3406, 3512), off-highway haulers (777, 785), and dozers (D8, D9, D10)—our parts ensure exact dimensional and functional alignment with original factory cooler assemblies, heat-exchange cores, flange interfaces, and sealing gaskets to guarantee a perfect match.
• Complete Oil Coolers & Thermal Components: 1. Engine Oil Coolers & Cores: Plate-fin and shell-and-tube high-efficiency heat exchangers and multi-layered stacked radiator cores; 2. Hydraulic & Transmission Coolers: Independent or integrated oil coolers engineered for high-pressure systems and powershift transmissions to maintain optimal fluid temperatures during heavy workloads; 3. Thermal Management Seals & Lines: Cooler overhaul sealing kits, high-temp O-rings, water pipes, and rigid oil line assemblies.
• OEM & Heavy-Duty Aftermarket: We offer certified original equipment manufacturer Caterpillar oil coolers alongside rigorously tested heavy-duty aftermarket options manufactured with high-thermal-conductivity copper alloys or reinforced aluminum plate-fin structures and verified through high-pressure leak testing, delivering exceptional heat-exchange efficiency and extended fatigue life at a cost-effective price point for global clients.
Supply Chain & Logistics
We maintain a robust operational infrastructure designed to support global machinery thermal management component procurement through direct supply channels, delivering reliable stock availability and rapid dispatch to build trust with international buyers.
• Ready-to-Ship Inventory and Part Verification: We maintain large-volume stock of high-demand CAT mining truck, excavator, and bulldozer oil coolers. Backed by professional technical teams and heavy machinery parts databases, we guarantee precise matching and direct dispatch upon order confirmation to minimize equipment downtime caused by cooling system failures leading to engine overheating and scoring.
• Heavy-Duty Anti-Shock Crating and Packaging: We implement specialized industrial packaging standards for precision plate-fin cooler cores and large-volume cooler assemblies, utilizing internal high-density expanded polyethylene foam suspension fixing, moisture-proof vacuum sealing, custom fumigated solid wood crates or thickened honeycomb master cartons, and steel-banded locking reinforcement to ensure parts withstand transcontinental ocean or air transit without mechanical impact distortion or salt-fog corrosion.
• Consolidated Sourcing: We support overseas clients by consolidating heavy oil coolers into precise bundled shipments alongside major overhaul components, such as engine overhaul kits, water pumps, or turbochargers, maximizing container space utilization and significantly reducing international freight costs.
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 high-dust, high-ambient-temperature quarries and mines, where oil cooler internals suffer from oil carbonization blockages leading to sudden drops in cooling efficiency, and high-pressure pulses cause cooler tube bundles to crack and leak coolant into the oil. We also provide professional engineering upgrades, including anti-coking reinforced heat-exchange cores and high-strength impulse-resistant oil cooler assemblies.
• Cooler Troubleshooting and Maintenance Guidelines: We address common user concerns regarding excessive oil temperatures and oil-coolant mixing by providing professional diagnostic and replacement guidance. This includes instructions on how technicians can determine whether oil-coolant mixing stems from internal core cracking or cylinder liner water seal failures to avoid unnecessary replacements, alongside emphasis on professional lubrication system flushing prior to installing new coolers to remove residual emulsified sludge and metal debris and prevent secondary blockages.
• Expert Technical Support and Safety Guidelines: We provide technical documentation covering Caterpillar engine oil cooler mounting pad flatness inspection standards, correct seal positioning, and bolt torque specifications, preventing secondary leaks caused by improper installation.
Call to Action & User Experience
Optimize your engine thermal management and operating temperature control 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 that support fast product filtering by Caterpillar machine or engine model (such as CAT C15 or 3512 units), cooler application type (such as engine oil coolers, hydraulic oil coolers, and transmission oil coolers), or original equipment manufacturer part numbers to lock onto target products instantly.
• RFQ and Freight Quotation: Access our fast-response interactive channels providing one-click access to oil cooler assembly and heavy wooden crate freight bundled quotations, fulfilling centralized 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 engine and thermal management system experts to assist overseas clients in verifying cooler interface styles and line layouts across different model years and serial numbers, ensuring cross-border procurement runs error-free.

OEM GENUINEIN STOCK
Core As-Oil Cooler CA4813477 481-3477 4813477 For Caterpillar Engine C4.4 3054C Caterpillar Excavator 320D2 GC
A&SModel: CA4813477, 481-3477, 4813477|Brand: A&S
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OEM GENUINEIN STOCK
Core As-Oil Cooler CA5086291 508-6291 5086291 For Caterpillar Engine C7.1 C4.4 Caterpillar Excavator 323 320 320 GC
A&SModel: CA5086291, 508-6291, 5086291|Brand: A&S
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OEM GENUINEIN STOCK
Core As-Oil Cooler CA5215202 521-5202 5215202 For Caterpillar Engine C7.1 Caterpillar Excavator 330 GC 330
A&SModel: CA5215202, 521-5202, 5215202|Brand: A&S
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OEM GENUINEIN STOCK
Core As-Oil Cooler CA5411387 541-1387 5411387 5117565 511-7565 CA5117565 For Caterpillar Engine C13 Caterpillar Excavator 349 352
A&SModel: CA5411387, 541-1387, 5411387, 5117565, 511-7565, CA5117565|Brand: A&S
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OEM GENUINEIN STOCK
Core As-Oil Cooler CA7W8801 7W-8801 7W8801 For Caterpillar Engine D4.236 4.236 Caterpillar Backhoe Loader 426 436 438 416
A&SModel: CA7W8801, 7W-8801, 7W8801|Brand: A&S
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OEM GENUINEIN STOCK
Core As-Power Train Oil Cooler 252-6841 2526841 252-6849 2526849 For Caterpillar Engine 3056E C6.6 Caterpillar Wheel Loader 928H 930G
A&SModel: CA2526841, 252-6841, 2526841, CA2526849, 252-6849, 2526849|Brand: A&S
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OEM GENUINEIN STOCK
Core As-Steering Oil Cooler CA1907625 190-7625 1907625 For Caterpillar Engine C32 C27 3508B C18 C-18 Caterpillar Wheel Dozer 844K 854G
A&SModel: CA1907625, 190-7625, 1907625, 1140324, 114-0324, CA1140324|Brand: A&S
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OEM GENUINEIN STOCK
Core Assem 521-6481 5216481 CA5216481 For Caterpillar CAT Engine 3304 3306 Caterpillar Motor Grader 12G 130G 16G
A&SModel: 521-6481, 5216481, CA5216481|Brand: A&S
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OEM GENUINEIN STOCK
Core Assem 6N-8225 CA6N8225 6N8225 For Caterpillar Motor Grader 12G 130G 16G Caterpillar CAT Engine 3304 3306
A&SModel: 6N-8225, CA6N8225, 6N8225|Brand: A&S
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OEM GENUINEIN STOCK
Core Assem CA1W6040 1W-6040 1W6040 For Caterpillar Engine 3304 Caterpillar Wheel Loader 905B
A&SModel: CA1W6040, 1W-6040, 1W6040|Brand: A&S
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OEM GENUINEIN STOCK
Core Assem CA3P0117 3P-0117 3P0117 For Caterpillar Engine 3304 3306 Caterpillar Motor Grader 12G 130G 16G
A&SModel: CA3P0117, 3P-0117, 3P0117|Brand: A&S
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OEM GENUINEIN STOCK
Core Assem CA4N4374 4N-4374 4N4374 For Caterpillar Engine 3306 Caterpillar Track Loader 977K
A&SModel: CA4N4374, 4N-4374, 4N4374, 7N0047, 7N-0047, CA7N0047, 8N4914, 8N-4914, CA8N4914, 1W0225, 1W-0225, CA1W0225, 7N9135, 7N-9135, CA7N9135|Brand: A&S
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OEM GENUINEIN STOCK
Core Assem CA4N5901 4N-5901 4N5901 CA1P6402 1P-6402 1P6402 For Caterpillar Engine 3306 Caterpillar Track-type Tractor D5 D5B
A&SModel: CA4N5901, 4N-5901, 4N5901, CA1P6402, 1P-6402, 1P6402, 7N9134, 7N-9134, CA7N9134, 8N4364, 8N-4364, CA8N4364|Brand: A&S
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OEM GENUINEIN STOCK
Core Assem CA4N5908 4N-5908 4N5908 For Caterpillar Engine 3306 Caterpillar Wheel Loader 966C 966 966R
A&SModel: CA4N5908, 4N-5908, 4N5908, 1W-0219, 1W0219, CA1W0219, 5937650, 593-7650, CA5937650|Brand: A&S
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OEM GENUINEIN STOCK
Core Assem CA4N5915 4N-5915 4N5915 CA9S5986 9S-5986 9S5986 For Caterpillar Engine 3306 Caterpillar Wheel Loader 980B
A&SModel: CA4N5915, 4N-5915, 4N5915, CA9S5986, 9S-5986, 9S5986, CA4N5909, 4N-5909, 4N5909, 1W-0223, 1W0223, CA1W0223, 593-7660, 5937660, CA5937660|Brand: A&S
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