CATFuel System

8s3999 Fuel Injection Lines — Cat 12G 14G

These fuel injection lines are critical components of the engine's fuel delivery system, precisely directing high-pressure fuel from the injection pump to the cylinders. Manufactured to meet stringent material and dimensional standards, they ensure consistent fuel atomization, unlike worn lines that can leak or become obstructed. Operators may notice rough idling, a loss of engine power, or visible fuel leaks around the injection pump and cylinder head when these lines begin to fail.

Fuel Injection Lines – Part No 8s3999 – 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 Injection Line
MaterialHigh-strength steel alloy
ApplicationEngine fuel injection system
Service LifeReplace as needed based on inspection or failure
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial signs of failure may include a noticeable drop in engine performance or a rougher idle. If ignored, fuel leaks can worsen, leading to increased fuel consumption and potential starting difficulties. Continued operation with leaking lines poses a fire risk due to the presence of combustible fuel under pressure.

Installation Tip

Ensure the engine is completely cool before beginning any work on the fuel system to prevent burns. Avoid overtightening the fittings, as this can damage the line or the pump/injector threads.

Service Note

Inspect the fuel injection pump and injectors for any signs of wear or leakage when replacing fuel injection lines.