CATHydraulic Parts

2128917 Valve Seat Insert (Exhaust) — Cat 140M 140M 2

This is an exhaust valve seat insert, a critical component within the engine's cylinder head responsible for providing a sealing surface for the exhaust valve. Manufactured to precise OEM specifications, it offers superior heat resistance and durability compared to a worn or pitted seat. Operators might observe a loss of engine power, rough idling, increased exhaust smoke, or a ticking noise from the engine when this valve seat fails.

Valve Seat Insert (Exhaust) – Part No 2128917 – 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)
MaterialHigh-temperature Alloy Steel
ApplicationEngine Cylinder Head (Exhaust Valve)
Service LifeReplace as part of cylinder head overhaul
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Early indications of a failing exhaust valve seat include a rough engine idle and a noticeable reduction in engine power. If ignored, the poor seal will lead to increased exhaust emissions and potential overheating of the valve and surrounding cylinder head material. Continued operation risks valve burning and severe cylinder head damage.

Installation Tip

Ensure the cylinder head is properly cleaned and free of any carbon buildup before attempting installation. Avoid using excessive force during installation, as this can damage the cylinder head or the new valve seat.

Service Note

Inspect the corresponding exhaust valve for wear or damage, and check the valve guide for excessive clearance.