CATFuel System

479-4131 Fuel Water Separator — Cat M318F M320F

This Fuel Water Separator is designed to remove water and contaminants from diesel fuel, protecting the engine's fuel injection system. It is built to meet rigorous OEM standards, providing superior filtration compared to a clogged or damaged unit. Operators may notice a loss of engine power, rough idling, or the illumination of a "water in fuel" warning light when this component begins to fail.

Fuel Water Separator – Part No 479-4131 – CAT Spare Part
Part Specifications
BrandCAT
CategoryFuel System
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

Use clean, filtered fuel — fuel injection components have micron-level tolerances. Prime fuel system before cranking to avoid dry-start damage. Replace fuel filter whenever servicing injection components. Calibrate injectors after replacement if equipment has ECU.

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

Part TypeFuel Water Separator
MaterialMetal and filter media
ApplicationEngine fuel system
Service LifeReplace every 500 hours or as indicated by service manual
CompatibilityCAT Excavator M318F M320F M322F 312E
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial symptoms of a failing fuel water separator include intermittent engine sputtering or hesitation during operation. If ignored, the filter can become completely clogged, leading to a significant loss of engine power and potential stalling. Continued use with a compromised separator risks allowing water and debris into the fuel injection system, causing costly damage.

Installation Tip

Always drain any accumulated water from the separator bowl before attempting removal to minimize spillage. Ensure the new O-ring or gasket is properly seated and lubricated before tightening the new separator assembly.

Service Note

Inspect the fuel lines leading to and from the separator for any signs of cracking or leaks, and check the fuel tank for sediment when replacing the fuel water separator.