207-03-75121 RADIATOR ASS'Y is a heavy-duty engine cooling radiator designed for Komatsu excavators including PC300 and PC350. It is engineered to transfer heat from the engine coolant to the surrounding air, helping maintain stable engine operating temperatures during continuous excavation and high-load working conditions. Public parts references identify 207-03-75121 as a Komatsu radiator for the PC300/PC350 family.
| Parameter | Description |
| Part Number | 207-03-75121 |
| Product Name | Radiator Assembly |
| Brand | Komatsu |
| Product Type | Engine Cooling Radiator |
| Material | Aluminum core with reinforced housing |
| Strength & Performance | Designed for stable heat dissipation in high-load excavation work |
| Surface Treatment / Coating | Anti-corrosion treated |
| Dimensions & Structure | OEM standard |
| Function / Installation Position | Engine cooling module |
| Operating Conditions | Excavator heavy-duty operation |
| Compatible Models | PC300, PC350 |
| Weight | 19.98 kg |
| Packaging | Wooden crate packaging |
| Lead Time | 30–90 days |
| Shipping Method | Sea / Land |
| Payment Method | USD / RMB / Ruble |
| Warranty | 6 months |
The radiator plays an important role in maintaining the engine’s thermal balance, especially when equipment operates for extended periods under heavy load.
The 207-03-75121 RADIATOR ASS’Y is suitable for:
Public radiator catalogs also list this part number for additional Komatsu models, including:
Some parts suppliers further specify applications such as PC300-8, PC300LC-8, PC350-8, PC350LC-8, PC400-7 and PC450-7. Compatibility can vary according to machine configuration and serial number, so customers should provide the machine serial number before ordering.
The 207-03-75121 RADIATOR ASS’Y is suitable for:
It is particularly suitable for excavators operating under continuous high loads, high ambient temperatures, dusty environments and extended working cycles where dependable engine cooling is essential.
YLCM specializes in supplying construction and mining machinery spare parts to customers worldwide.
We provide:
Our product range covers Komatsu, Caterpillar, Hitachi, Cummins and other major brands, including radiators, cooling components, engine parts, hydraulic components, transmission parts, electrical components, filters and undercarriage parts.
Whether you need a complete radiator assembly or other cooling-system components, YLCM can help source the appropriate replacement according to your machine model and part number.
The 207-03-75121 RADIATOR ASS’Y is professionally protected for international transportation.
Packaging options include:
For large radiator assemblies, reinforced wooden packaging can be arranged to minimize damage caused by vibration, impact and handling during transportation.
YLCM provides international logistics solutions according to the destination, cargo size and customer’s requirements.
Available shipping methods include:
For large and heavy radiator assemblies, our logistics team can recommend a suitable transportation solution based on destination, cargo dimensions, order quantity and delivery requirements.
Looking for the 207-03-75121 RADIATOR ASS’Y for Komatsu PC300/PC350?
Contact YLCM to receive:
Please send us your part number, machine model or serial number. Our technical team can verify the application and provide a suitable quotation for your project.
Q1: What is 207-03-75121?
A: 207-03-75121 is a Komatsu radiator used in the engine cooling system of compatible heavy-duty excavators. Public parts catalogs list it for PC300, PC350 and other related models.
Q2: Is 207-03-75121 compatible with Komatsu PC300?
A: Yes. Public parts references list PC300 as a compatible model.
Q3: Is 207-03-75121 compatible with Komatsu PC350?
A: Yes. The part is also listed for PC350 and related PC350 configurations.
Q4: Can 207-03-75121 be used on PC400 or PC450?
A: Public radiator catalogs also list PC400 and PC450 applications. However, compatibility should be confirmed against the machine serial number before ordering.
Q5: What is the main function of this radiator?
A: The radiator removes heat from engine coolant and releases it into the surrounding air, helping maintain the engine within its proper operating temperature range.
Q6: What material is used for the radiator?
A: The radiator uses an aluminum-based core with durable supporting components, providing efficient heat transfer while maintaining structural durability.
Q7: How can I confirm compatibility before ordering?
A: Please provide your machine model, serial number or original part number. Our technical team can verify the correct radiator application before shipment.
Q8: What warranty does YLCM provide?
A: This product comes with a standard 6-month warranty.
