CATEngine Parts

34335-03031-51-7558 9T Oil Pump Gear — Cat S6K E320

This 9T oil pump gear is a critical component responsible for circulating lubricating oil throughout the engine to reduce friction and heat. Manufactured to meet stringent CAT quality standards, it ensures consistent oil flow, unlike worn gears that can lead to insufficient lubrication and engine damage. Operators may first notice a drop in oil pressure readings or the illumination of the oil pressure warning light, potentially followed by increased engine noise and overheating.

9T Oil Pump Gear – Part No 34335-03031-51-7558 – 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 Gear
MaterialHardened steel
ApplicationEngine lubrication system
Service LifeReplace as needed during engine overhaul or if worn
CompatibilityCAT specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A gradual decrease in engine oil pressure, often indicated by the dashboard gauge or warning light, is the first sign of a worn oil pump gear. If left unaddressed, the oil pump may fail to provide adequate lubrication, leading to increased friction, overheating, and severe internal engine damage. Prolonged operation without proper lubrication will result in engine seizure.

Installation Tip

Ensure the oil pump housing and mounting surfaces are perfectly clean and free of any old gasket material to guarantee a proper seal. Do not mix up the drive and driven gears if they are not a matched set.

Service Note

When replacing the oil pump gear, it is essential to inspect the oil pump housing for wear and clean or replace the oil suction screen.