Radiator hose

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Excavator Radiator Hoses for Cooling System Repairs

Find replacement excavator radiator hoses for a variety of heavy equipment cooling system applications at Fab Heavy Parts. Radiator hoses help carry coolant between cooling system components, making them essential when repairing damaged, leaking, or deteriorated hoses.

Our radiator hose collection includes upper radiator hoses, lower radiator hoses, and other hose assemblies listed for selected excavator and engine applications. Whether you are replacing a worn hose during routine maintenance or addressing a cooling system leak, identifying the correct replacement is an important part of the repair.

Upper and Lower Radiator Hose Options

Different radiator hoses serve different positions within an equipment cooling system. Upper radiator hoses generally carry heated coolant toward the radiator, while lower radiator hoses typically return cooled coolant toward the engine.

Fab Heavy Parts offers replacement hose options with different shapes, connections, and listed applications. Some products are identified by individual replacement part numbers, while others are listed as upper and lower radiator hose combinations.

When comparing options, pay attention to the hose position, routing, connection points, and applicable part number rather than relying on appearance alone.

Radiator Hoses for Komatsu, Caterpillar, Hitachi, and Doosan Excavators

This radiator hose collection includes radiator hoses listed for various excavator models, including selected:

  • Komatsu excavators: PC60, PC120, PC160, PC200, PC210, and PC400 series applications.

  • Caterpillar excavators: 311B, 312B, and selected 324D–329D applications.

  • Hitachi excavators: EX100, EX120, EX300, and selected ZX-series applications.

  • Doosan excavators: DH300-7, DX300LC, and DX350LC applications.

Additional radiator hose listings cover selected engine applications, including Cummins B3.3 and QSB3.3.

Compatibility varies by individual product, machine configuration, and part number. Always review the specific radiator hose listing before selecting a replacement.

Choosing the Right Excavator Coolant Hose

Before ordering, compare the part number of your existing radiator hose with the replacement listing. Check your excavator model, applicable serial number range, hose position, and available connection details.

If the existing hose's part number is unavailable, equipment identification information and clear photographs of the existing hose may help narrow down suitable options.

For related cooling system repairs, explore our radiator core collection and water pump collection to find additional replacement components.

Browse the available excavator radiator hoses at Fab Heavy Parts and review individual product specifications to identify a suitable replacement for your equipment.

Need Help Finding the Right Radiator hose?

Can't find the replacement part you need? Send FAB Heavy Parts your part number, engine model, or equipment details. Our team can help review your requirements and provide a quotation.

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Frequently Asked Questions

How do I find the right radiator hose for my excavator?

Start by checking your excavator's make, model, and original radiator hose part number. You should also identify whether you need an upper or lower radiator hose. Some applications may require additional information, such as the machine serial number or engine configuration. Compare these details with the replacement radiator hose listing before ordering.

What's the difference between an upper and a lower excavator radiator hose?

Upper radiator hoses generally carry hot coolant from the engine toward the radiator, while lower radiator hoses typically carry cooled coolant back toward the engine. Their shapes, connection points, and applications can differ. We recommend checking your original hose and the product details to make sure you select the correct position and replacement.

Can I use the part number on my old radiator hose to find a replacement?

Yes. The original part number is often one of the most useful references for identifying a replacement radiator hose. Search our radiator hose listings using the number and compare any matching results with your equipment details. If the number is worn or unreadable, you can provide your machine model, serial number, and photographs of the existing hose to help with identification.

What should I check before installing my replacement radiator hose?

Before installation, compare the replacement hose with the original part. Check its shape, length, connection diameters, routing, and intended installation position. Inspect the hose for visible damage and follow your equipment manufacturer's service instructions. Always allow the cooling system to cool before opening it, as hot coolant can cause serious burns.

Why is my excavator still leaking coolant after replacing the radiator hose?

A continuing coolant leak does not necessarily mean the replacement hose is defective. Other possible causes include loose or incorrectly positioned clamps, damaged connection surfaces, or leaks elsewhere in the cooling system. With the engine cool, inspect the hose connections and surrounding components according to your equipment's service guidance. If the source remains unclear, have the cooling system inspected by a qualified technician.

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