6251-61-5110 Engine Oil Cooler for Komatsu PC400-8, PC450-8 Excavators

The SPARKLING MACHINERY NEW 6251-61-5110 Oil Cooler Photo:

• • • • • • • • • Compatible Komatsu Models

                  This oil cooler is a core component for several large-frame Komatsu machines:

                  Machine Category	Models
                  Crawler Excavators	PC400-7E0, PC400-8, PC400LC-8, PC450-8, PC450LC-8
                  Engine Compatibility	SAA6D125E-5, SAA6D125E-6
                  Other Equipment	D85EX-15, D85PX-15 Dozers (Select Serial Numbers)

                   

Q&A

• • • • • • Q1: What is the difference between the 6251-61-5110 and the 208-03-72650 oil cooler?

          • A: Generally, 6251-61-5110 refers to the engine-mounted cooler core or specific engine-side assembly, whereas 208-03-72650 is often the part number for the external cooler assembly or a specific radiator-side variant. You should always verify with your machine's serial number to see which specific part number your manifold requires.

            Q2: Can a clogged 6251-61-5110 cause turbocharger failure?

          • A: Absolutely. If the oil cooler is partially blocked, the oil temperature rises, causing it to lose viscosity. Since the turbocharger relies on a thin film of cool oil for its high-speed bearings, overheated oil can lead to premature bearing wear and eventual turbo failure.

            Q3: How often should I inspect this component?

          • A: You should inspect for external leaks during every 500-hour service interval. However, internal efficiency is harder to gauge; if you notice engine oil temperatures creeping higher than normal on your machine's display, the cooler core may be fouled and require replacement.