CATEngine Parts

6l-8617-3l-2866 Radiator Cap — Cat 3306

This radiator cap is designed to maintain optimal pressure within the engine's cooling system, preventing coolant overflow and overheating. It is manufactured to meet stringent OEM quality standards, ensuring a reliable seal that prevents leaks unlike a worn or damaged cap. Operators may notice coolant loss, steam from the engine bay, or a rising temperature gauge if this cap fails.

Radiator Cap – Part No 6l-8617-3l-2866 – 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 TypeRadiator Cap
MaterialMetal and Rubber
ApplicationEngine Cooling System
Service LifeReplace every 2,000 hrs or annually
CompatibilityCAT 3304, 3306, 3116, C9, C7
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial signs of a failing radiator cap include visible coolant leaks around the cap seal or a persistent sweet smell of coolant. If ignored, the engine may begin to overheat more frequently, leading to reduced performance and potential damage to engine components. Continued operation with a faulty cap can result in severe engine overheating and costly repairs.

Installation Tip

Ensure the cooling system is completely cool before attempting to remove the old cap to avoid burns. Do not overtighten the new cap, as this can damage the seal or the radiator neck.

Service Note

Inspect radiator hoses and the coolant reservoir for signs of degradation or leaks when replacing the radiator cap.