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Radiators and Coolers for Excavators, Construction Equipment, and Heavy Machinery:  OEM Quality, Worldwide Supply

Radiators and coolers are the thermal foundation of every excavator, dozer, wheel loader, and piece of heavy construction equipment on your site. Without a fully functioning heavy equipment cooling system, engine temperatures rise unchecked, hydraulic fluid degrades, transmission components wear prematurely, and what starts as a minor cooling fault becomes a major, costly breakdown. Every part in our heavy machinery cooling parts range is precision-matched to your machine's make, model, and serial number, so you get the right part on the first order. Imara Engineering holds a long-standing reputation for supplying OEM-specification cooling parts that perform to the same standard as the original, at a significantly lower cost than dealership pricing.

At Imara Engineering, we supply a complete range of OEM-quality radiators and coolers built for the machines your operation depends on daily, covering everything from excavator radiators and engine oil coolers to hydraulic oil coolers, transmission oil coolers, intercoolers, cooling fans, and radiator caps and hoses. Our construction equipment radiators and cooling components are manufactured using quality-grade aluminium, copper, brass, and industrial rubber, covering the major brands that run the world's job sites: Caterpillar, Komatsu, and Hitachi. Aftermarket does not mean inferior here; it means the same cooling performance, the same fit, and the same service life as the original manufacturer part. We ship to Australia, the United States, Canada, and internationally, and we move quickly because your machine's downtime is your operation's lost revenue. Send us your machine details, and we will get your cooling parts confirmed and dispatched without delay.

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651 products

RADIATOR 4152861 for Hitachi UH083

RADIATOR 4152861 for Hitachi UH083

Regular price $1,950.00
Sale price $1,950.00 Regular price
Radiator VOE14566613 14566613 for Volvo ECR235C – Excavator

Excavators

Radiator VOE14566613 14566613 for Volvo ECR235C – Excavator

Regular price $2,700.00
Sale price $2,700.00 Regular price
Radiator Replacement Panel 2W-7933 for CAT 16G Graders

Radiator 2W-7933 2W7933 for Caterpillar 16G Motor Graders

Regular price $1,800.00
Sale price $1,800.00 Regular price
Radiator 206-6774 CA1807002 180-7002 For Cat Engine 3054E
Radiator 8N-4078 8N4078 - CAT Engine 3204, D3B, D3C Dozers

Radiator 8N-4078 8N4078 for CAT 3204, D3B, D3C, D4C Dozers

Regular price $3,800.00
Sale price $3,800.00 Regular price
Water Tank Radiator 225‑3318 for Caterpillar 966G, 972G II

Caterpillar

Water Tank Radiator 225‑3318 / 2253318 / 334‑7679 for Caterpillar 966G, 966G II & 972G II Wheel Loaders

Regular price $3,650.00
Sale price $3,650.00 Regular price $0.00
Radiator 4P0893 4P0894 4P0897 for 950F Caterpillar Loaders

Radiator 4P0893 / 4P0894 / 4P0897 for Caterpillar 950F, 960F Wheel Loaders

Regular price $1,250.00
Sale price $1,250.00 Regular price $0.00
Radiator 16Y-03A-03000 for Shantui SD16 / SD22 / SD32 dozers

Radiator 16Y-03A-03000 for Shantui SD16 / SD22 / SD32 Bulldozers

Regular price $4,500.00
Sale price $4,500.00 Regular price $0.00
Radiator 66-4778 / 113-3636 for Caterpillar 928G Loader

Radiator 166-4778 664778 / 113-3636 1133636 for Caterpillar 928G Loader

Regular price $5,600.00
Sale price $5,600.00 Regular price $0.00
Oil Cooler 119-6254 1196254 for CAT 428B Backhoe Loader

Oil Cooler 119-6254 1196254 for CAT 428B Backhoe Loader

Regular price $2,200.00
Sale price $2,200.00 Regular price
Oil Cooler 124-1763 / 151-6458 for CAT E330B Excavator

Oil Cooler 124-1763 1241763 / 151-6458 1516458 for CAT E330B, E330B L, 330B, 330B L Excavator

Regular price $2,989.00
Sale price $2,989.00 Regular price
Oil Cooler Radiator 253-1218 2531218 for CAT D3K, D4K Dozers

Oil Cooler Radiator 253-1218 2531218 for CAT D3K, D4K Track-Type Dozers

Regular price $3,650.00
Sale price $3,650.00 Regular price
Aftercooler 260-0354 260-0354 for CAT 966H Wheel Loader

Aftercooler 260-0354 2600354 for CAT 966H Wheel Loader

Regular price $2,200.00
Sale price $2,200.00 Regular price
Hydraulic Oil Cooler 3174354 317-4354 for CAT D3G & D4G

Hydraulic Oil Cooler 3174354 317-4354 for CAT D3G XL, D3G LGP, D4G Track-Type Tractors / Dozers

Regular price $3,250.00
Sale price $3,250.00 Regular price
Radiator 20Y-03-42451 Komatsu PC200LC-8 / PC200-8 Excavator

Radiator 20Y-03-42451 20Y0342451 for Komatsu PC200LC-8, PC200-8 Excavators

Regular price $1,390.00
Sale price $1,390.00 Regular price
Aftercooler Core 2W-6587 2W6587 for Caterpillar 3408 Engine Machines

Aftercooler Core 2W-6587 2W6587 for Caterpillar 3408 Engine Machines

Regular price $3,560.00
Sale price $3,560.00 Regular price
Piston 2W-6593 2W6593 for CAT 990 992C 3412 Engines

Oil Cooler 2W-6593 2W6593 for CAT 990 992C 3412 Engines

Regular price $0.00
Sale price $0.00 Regular price
Piston 7W-5455 7W5455 for CAT 784B 785 785B Trucks

Aftercooler 7W-5455 7W5455 for CAT 784B 785 785B Trucks

Regular price $0.00
Sale price $0.00 Regular price
Radiator VOE17264508 17264508 for Volvo EC350DL Excavator

Radiator VOE17264508 17264508 for Volvo EC350DL Excavator

Regular price $1,800.00
Sale price $1,800.00 Regular price

Collection: Radiators & Coolers

Our Complete Radiators and Coolers Range

Imara Engineering's cooling system catalogue covers every major thermal management component in your machine. Each category below has its own dedicated page with full machine compatibility listings, OEM part number cross-references, and direct-fit replacement parts. Select the component your machine needs or contact our team for a complete cooling system quote.

Radiators

The excavator radiator is the primary heat exchanger in your machine's cooling circuit. When a radiator fails, coolant loss is rapid, and engine damage follows within minutes if the machine continues operating. Imara Engineering stocks full radiator assemblies and excavator radiator cores for Caterpillar, Komatsu, and Hitachi machines, from compact mini excavators through to large dozers and wheel loaders. All units are built to OEM specification for a direct bolt-on replacement with no modification required.

What we supply:

  • Full radiator assemblies and excavator radiator core replacements
  • CAT 302.5, 320D and D6; Komatsu PC200-8 and D65; Hitachi ZX-series fitments
  • Aluminium-core and brass-copper construction options
  • Loader, dozer, bulldozer, and mini excavator radiator fitments

Engine Oil Coolers

Engine oil coolers regulate oil temperature inside your diesel engine. When one fails, coolant enters the oil circuit and internal engine damage follows within hours of continued operation. Imara Engineering's engine oil cooler range is the deepest catalogue in our Radiators and Coolers family, covering 26 verified CAT engine platforms, including the C7, C13, C15, 3208, 3306, 3406, 3406B, and 3406E series, alongside Komatsu and Hitachi engine platforms.

What we supply:

  • Caterpillar engine oil coolers across all major engine families
  • Komatsu oil cooler units, including the PC200-8 platform
  • Heavy-duty oil cooler assemblies for high-output engine applications
  • OEM part number cross-referencing, including the 0R9056 reference

Hydraulic Oil Coolers

Every working cycle an excavator completes generates heat inside its hydraulic system. Without an effective hydraulic oil cooler, fluid degrades, seals fail, and pump damage accelerates into expensive unplanned repairs. Our excavator hydraulic oil cooler range covers full cooler assemblies, hydraulic cooler cores, and heat exchanger units for Caterpillar, Komatsu, and Hitachi machines, all built for direct-fit installation.

What we supply:

  • Full hydraulic oil cooler assemblies and core replacements
  • Caterpillar, Komatsu, and Hitachi excavator fitments
  • Hydraulic fluid cooler and heat exchanger units
  • Units rated for high-cycle construction and mining applications

Transmission Oil Coolers

Dozers, wheel loaders, and large excavators place extreme thermal demands on their transmissions, particularly during continuous high-cycle earthmoving operations. A failing transmission oil cooler accelerates gearbox wear and risks complete transmission failure. Imara Engineering stocks transmission and gearbox oil cooler assemblies for Caterpillar, Komatsu, and Hitachi machines, including final drive cooler units for dozer and loader applications.

What we supply:

  • Transmission and gearbox oil cooler assemblies
  • CAT and Komatsu transmission cooler fitments
  • Final drive cooler units for dozers and wheel loaders
  • Dozer and bulldozer transmission cooler options in stock

Intercoolers and Aftercoolers

Diesel intercoolers and aftercoolers reduce the temperature of turbocharged charge air before it enters the combustion chamber. Cooler, denser charge air improves combustion efficiency, increases power output, and reduces thermal stress on internal engine components. This is particularly important for machines operating in the high-ambient-temperature conditions common across Australian, African, and Middle Eastern job sites. Our range covers Caterpillar C13 and C15, Cummins 6BT, and other heavy machinery diesel platforms.

What we supply:

  • Air-to-air and liquid-cooled diesel aftercooler units
  • CAT C13 and C15 intercooler direct replacements
  • Cummins 6BT and Detroit Diesel aftercooler coverage
  • OEM core dimensions for direct bolt-on installation

Cooling Fans and Fan Motors

A radiator and oil cooler are only as effective as the airflow moving across them. A worn fan blade, a failed viscous fan clutch, or a seized hydraulic fan drive motor removes that airflow entirely, causing the entire cooling system to fail regardless of the condition of the cooler cores. Imara Engineering supplies excavator cooling fans, hydraulic fan motors, fan drive motors, and fan blades for CAT, Komatsu, and Hitachi machines.

What we supply:

  • Hydraulic fan motor and fan drive motor assemblies
  • Cooling fan blade replacements for major excavator platforms
  • Viscous fan clutch units in stock
  • CAT 320, Komatsu PC200, and Hitachi ZX200 fan motor fitments

Radiator Caps and Coolant Hoses

A failed radiator cap loses system pressure and empties your coolant in minutes. A cracked coolant hose can fail without any visible warning until complete rupture on site. These are the smallest components in your heavy equipment cooling system and among the most consequential when left uninspected. Imara Engineering stocks radiator caps and coolant hoses for Caterpillar, Komatsu, and Hitachi machines, including upper and lower hoses, bypass hoses, coolant overflow tanks, and OEM-rated pressure caps.

What we supply:

  • Pressure-rated radiator caps for CAT, Komatsu, and Hitachi
  • Upper, lower, and bypass coolant hose kits
  • Coolant overflow tank assemblies
  • Part number lookup by machine model is available on request

Why Source Your Cooling Parts from Imara Engineering?

There is no shortage of parts suppliers in the market. Very few combine OEM-matched build quality, machine-specific fitment confirmation, deep catalogue breadth, and fast international dispatch the way Imara Engineering does consistently.

OEM Quality at Aftermarket Pricing

Every radiator, oil cooler, intercooler, and fan motor in our range is manufactured to OEM specification using quality-grade aluminium, copper, brass, and industrial rubber compounds. The materials are the same. The thermal performance ratings are the same. The service life expectation is the same. What is different is the price. Imara Engineering exists to give fleet operators and procurement teams access to genuine-quality cooling parts without the dealership markup built into every OEM invoice.

Fitment Confirmed Before You Order

Every part in our heavy machinery cooling parts catalogue is cross-referenced against machine make, model, and serial number. If you are not certain about compatibility, our team confirms correct fitment before your order is placed. We cover:

  1. Caterpillar (CAT) — 300-series excavators, D-series dozers, 900-series wheel loaders, and the C7, C13, C15, 3306, and 3406 engine families
  2. Komatsu — PC200, PC300, D65, and D85 excavator and dozer platforms
  3. Hitachi — ZX-series excavators and construction equipment
  4. Volvo CE, Doosan, and John Deere construction equipment platforms

Fast Worldwide Shipping

Imara Engineering dispatches to Australia, the United States, Canada, and internationally. Every order is processed promptly and dispatched without unnecessary delay. Contact our team for part availability and an accurate lead time to your specific location. We provide real timelines, not generic estimates.

Expert Parts Matching on Every Order

Provide your machine make, model, and serial number, and our team will identify the correct cooling part accurately and quickly. If you have an OEM part number, we cross-reference it directly. Getting the right heavy equipment cooling system part to the right machine on the first shipment is not an added service at Imara Engineering. It is the standard.

Frequently Asked Questions

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