CATEngine Parts

178-6539 Gear Housing Oil Pump — Cat 3066 318C

This is a gear housing oil pump, a vital component that circulates lubricating oil throughout the engine to reduce friction and dissipate heat. It is constructed from durable materials to ensure consistent oil pressure and flow, unlike a worn pump which may exhibit reduced output or internal leakage. Operators might notice a drop in oil pressure gauge readings, increased engine noise, or warning lights if this oil pump begins to fail.

Gear Housing Oil Pump – Part No 178-6539 – 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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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 TypeGear Housing Oil Pump
MaterialCast iron, steel gears
ApplicationEngine lubrication system
Service LifeReplace based on engine overhaul or failure indication
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A failing oil pump may initially present as intermittent low oil pressure warnings or a fluctuating oil pressure gauge. As the pump wears, oil pressure will consistently drop, leading to increased engine noise and potential overheating due to insufficient lubrication. Continued operation without adequate oil pressure can cause severe internal engine damage.

Installation Tip

Ensure the oil pump drive gear and the driven gear are properly aligned and meshed before installing the pump housing. Do not reuse the old oil pump gasket or seal; always install new ones.

Service Note

Clean the oil pickup screen and inspect the oil pan for any debris when replacing the oil pump.