CATHydraulic Parts

3N8469 Pump Gp-Auxiliary Sea Water — Cat 3408 3412

This is an auxiliary seawater pump assembly, crucial for circulating coolant through the engine's heat exchanger to maintain optimal operating temperatures. Manufactured to precise specifications, it offers reliable flow rates and durability, unlike a worn pump with a failing impeller or bearing. Operators might observe engine overheating warnings, reduced cooling system performance, or audible noise from the pump.

Pump Gp-Auxiliary Sea Water – Part No 3N8469 – CAT Spare Part
Part Specifications
BrandCAT
CategoryHydraulic 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

Flush hydraulic lines before fitting new components. Use only manufacturer-specified hydraulic fluid. Check O-rings and backup rings for correct orientation. Bleed air from system after installation.

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

Part TypeAuxiliary Seawater Pump Assembly
MaterialCast Iron, Bronze, Steel
ApplicationEngine Cooling System
Service LifeReplace every 2,000 hrs or as needed
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first indication of a failing auxiliary seawater pump is often a rise in engine coolant temperature, especially under load. If left unaddressed, the pump may cease to circulate water altogether, leading to severe engine overheating and potential component damage. Continued operation without adequate cooling risks significant engine downtime and costly repairs.

Installation Tip

Ensure the engine is completely cool before starting disassembly to avoid burns from residual heat. Do not reuse the old gasket; always install a new one to ensure a proper seal and prevent leaks.

Service Note

Inspect the engine's heat exchanger for scale buildup or leaks, and check the condition of all coolant hoses and clamps.