CATHydraulic Parts

1337030 Valve Seat Insert (Exhaust) — Cat 75C 85C

This is an exhaust valve seat insert designed to seal the exhaust valve within the cylinder head of a diesel engine. It is precision-machined from high-grade steel to withstand extreme temperatures and pressures, ensuring optimal combustion and preventing gas leakage. A worn or damaged seat insert will manifest as a loss of engine power, rough idling, and increased exhaust smoke.

Valve Seat Insert (Exhaust) – Part No 1337030 – 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-grade steel alloy
ApplicationEngine cylinder head (exhaust valve)
Service LifeReplace as needed based on engine condition
CompatibilityCAT 3176, 3176B
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial signs of a failing exhaust valve seat insert include a noticeable loss of engine power and rough idling. If left unaddressed, the leakage will worsen, leading to increased fuel consumption and potential overheating. Continued operation with a compromised seal can lead to valve and piston damage.

Installation Tip

Ensure the cylinder head counterbore is thoroughly cleaned and free of any debris or carbon buildup before installation. Avoid using excessive force or improper tools, which can damage the new seat insert or the cylinder head.

Service Note

Always inspect the corresponding exhaust valve and valve guide for wear or damage when replacing the valve seat insert.