CATEngine Parts

268-3490 Valve Gasket Seal — Cat

This is a valve gasket seal, essential for creating a tight seal around engine valves and their associated components to prevent leaks of oil or combustion gases. It is constructed from durable, heat-resistant materials to withstand engine operating temperatures and pressures, unlike a brittle or degraded seal that can allow leaks. Operators may notice oil consumption, blue smoke from the exhaust, or a decrease in engine performance if this seal begins to fail.

Valve Gasket Seal – Part No 268-3490 – 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 TypeValve Gasket Seal
MaterialNBR rubber, Viton
ApplicationEngine valve stem sealing
Service LifeReplace as needed during valve service
CompatibilityCAT 268-3490
ConditionNew — OEM specification aftermarket

Failure Symptoms

Early signs of a failing valve gasket seal include a slight increase in oil consumption or a faint blue smoke from the exhaust, especially after idling. If left unaddressed, oil leakage will worsen, leading to more significant smoke and potential fouling of spark plugs or exhaust systems. Continued operation with leaking seals can result in excessive oil burning, reduced engine efficiency, and potential damage to emission control components.

Installation Tip

Ensure the valve stem and the seal bore are clean and free of any burrs or debris before attempting installation. Use a proper seal driver tool to press the seal on evenly, avoiding cocking it, which can compromise the seal.

Service Note

When replacing valve gasket seals, it is advisable to inspect the valve guides for wear and check the valve springs for proper tension.