CATEngine Parts

331-8906 Oil Pump — Cat 336D

This is a high-quality oil pump engineered to provide consistent lubrication pressure for your CAT engine. It is built to meet or exceed original equipment specifications, ensuring reliable oil circulation compared to a worn pump that may exhibit reduced flow or pressure. Operators may notice low oil pressure warnings, increased engine noise, or even oil starvation symptoms if this pump fails.

Oil Pump – Part No 331-8906 – 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 TypeOil Pump
MaterialCast iron and steel alloy
ApplicationEngine lubrication system
Service LifeReplace based on engine overhaul schedule or failure
CompatibilityCAT specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first sign of an oil pump issue is often a drop in oil pressure, indicated by a warning light or gauge. If ignored, this will lead to increased friction and heat within the engine, causing accelerated wear on bearings and other critical components. Prolonged operation without adequate lubrication can result in severe engine damage.

Installation Tip

Always prime the new oil pump with clean engine oil before installation to ensure immediate lubrication upon startup. Ensure the oil pickup tube screen is clean and properly seated to prevent debris from entering the pump.

Service Note

Inspect the engine oil pan and pickup screen for debris or sludge, and check the connecting rod and main bearings for wear when replacing the oil pump.