CATHydraulic Parts

1039253 Valve Seat Insert (Exhaust) — Cat 236B 236B3

This is an exhaust valve seat insert, a crucial component in the engine's cylinder head that provides a sealing surface for the exhaust valve. Manufactured to meet OEM material and dimensional specifications, it ensures proper valve closure and combustion efficiency, unlike a worn seat which allows leakage. Operators may notice a loss of engine power, rough idling, or increased exhaust emissions when this part begins to fail.

Valve Seat Insert (Exhaust) – Part No 1039253 – 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 inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first indication of a faulty exhaust valve seat insert is often a reduction in engine power and a rougher idle. If the issue persists, the engine may experience misfires, increased fuel consumption, and visible exhaust smoke. Continued operation risks overheating of the cylinder head and potential damage to the valve train components.

Installation Tip

Thoroughly clean the cylinder head bore where the seat will be installed, ensuring no debris or old material remains. Avoid using excessive force or impact tools during installation, as this can damage the seat or the cylinder head.

Service Note

Inspect the corresponding exhaust valve for any signs of burning, warping, or wear, and check the valve guide for excessive play.