CATEngine Parts

148-8978 Hydraulic Oil Cooler — Cat 990

This component is a heat exchanger designed to dissipate heat from the hydraulic system, maintaining optimal oil temperature for efficient operation. It is manufactured to meet stringent OEM quality standards, ensuring superior thermal transfer compared to a worn or clogged unit. Operators may notice increased hydraulic system temperatures, sluggish operation, or overheating warnings when this part begins to fail.

Hydraulic Oil Cooler – Part No 148-8978 – CAT Spare Part
Part Specifications
BrandCAT
CategoryEngine Parts
ConditionAftermarket — OEM Specification
DispatchSame-day from Mumbai (before 3 PM IST)
GST InvoiceAvailable — all orders
Export DocsCommercial invoice, packing list, COO

Compatible Models

Always verify with serial number before ordering.

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Parts Trading Company  ·  Mumbai, Est. 1956  ·  Same-day dispatch  ·  Ships worldwide  ·  GST invoice included

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Installation & Application Notes

Inspect mating surfaces for wear before fitting. Use torque specs from service manual. Replace gaskets and seals as a set — reusing compressed gaskets causes oil leaks. Clean all oil passages with compressed air.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeHydraulic Oil Cooler
MaterialAluminum or Copper Alloy
ApplicationHydraulic System Cooling
Service LifeReplace as needed based on inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial signs of a failing hydraulic oil cooler include a gradual increase in hydraulic oil temperature, especially under load. If ignored, the hydraulic system will become sluggish and less responsive as the oil breaks down. Prolonged operation with an ineffective cooler risks severe damage to hydraulic pumps, valves, and cylinders due to overheating.

Installation Tip

Ensure the mounting surfaces are clean and free of debris before installing the new cooler. Avoid overtightening the mounting bolts, as this can distort the cooler's core and lead to leaks.

Service Note

Inspect hydraulic hoses and fittings for leaks or damage, and consider flushing the hydraulic system if contamination is suspected.