CATHydraulic Parts

2168333 Valve Seat Insert (Exhaust) — Cat 550B 560B

This is an exhaust valve seat insert for Caterpillar engines, designed to provide a durable sealing surface for the exhaust valve. It is manufactured to meet stringent OEM quality standards, offering superior wear resistance compared to a worn or pitted seat. Failure often manifests as a loss of engine power, rough idling, or increased exhaust smoke, indicating poor cylinder sealing.

Valve Seat Insert (Exhaust) – Part No 2168333 – 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 TypeValve Seat Insert (Exhaust)
MaterialHardened Steel Alloy
ApplicationEngine Cylinder Head
Service LifeReplace as needed based on wear
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial signs of a worn exhaust valve seat include a noticeable decrease in engine power and a rougher idle. If left unaddressed, the poor sealing will lead to increased exhaust emissions and potential overheating of the valve and seat. Continued operation risks significant internal engine damage due to combustion blow-by.

Installation Tip

Ensure the cylinder head seat bore is thoroughly cleaned and free of any debris or old sealant before attempting installation. Avoid using excessive force or improper tools, which can damage the seat or the cylinder head bore.

Service Note

When replacing valve seat inserts, it is recommended to inspect and service the corresponding valve guides and valve seals.