CATHydraulic Parts

1070265 Valve Seat Insert (Exhaust) — Cat 120G 12G

This is an Exhaust Valve Seat Insert, a crucial component within the engine's cylinder head that provides a sealing surface for the exhaust valve. It is manufactured to meet exacting OEM standards, offering superior wear resistance and heat tolerance compared to a worn or pitted seat. Operators may experience a loss of engine power, rough idling, or increased exhaust smoke when this valve seat fails.

Valve Seat Insert (Exhaust) – Part No 1070265 – 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
MaterialHigh-temperature alloy steel
ApplicationEngine cylinder head (exhaust)
Service LifeReplace as needed during engine overhaul
CompatibilityCAT 120G, 12G, 12H, 12H es, 12H NA, 130G, 14
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial symptoms of a failing exhaust valve seat may include a slight decrease in engine performance or a subtle increase in exhaust noise. If the seat erodes further, it can lead to persistent misfires, difficulty starting, and excessive black smoke from the exhaust. Continued operation with a compromised valve seat risks severe engine damage due to loss of compression and potential valve recession.

Installation Tip

Ensure the cylinder head is thoroughly cleaned and free of any debris before attempting to install the valve seat insert. Avoid using excessive force or hammering, as this can damage the insert or the cylinder head bore.

Service Note

Replace exhaust valves and inspect valve guides and springs when replacing valve seat inserts.