CATEngine Parts

303-5781 Cylinder Head Cover — Cat 420E 430E

This cylinder head cover seals the top of the engine cylinder head, preventing oil and combustion byproducts from escaping the engine. It is constructed from durable materials to withstand engine heat and pressure, offering superior sealing compared to a cracked or warped cover. Operators may observe oil leaks around the cylinder head, a burning oil smell, or increased oil consumption when this component fails.

Cylinder Head Cover – Part No 303-5781 – CAT Spare Part
Part Specifications
BrandCAT
CategoryEngine 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

Inspect mating surfaces for wear before fitting. Use torque specs from service manual. Replace gaskets and seals as a set — reusing compressed gaskets causes oil leaks. Clean all oil passages with compressed air.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeCylinder Head Cover
MaterialStamped Steel or Aluminum Alloy
ApplicationEngine Cylinder Head
Service LifeReplace as needed based on inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Visible oil leaks originating from the top of the engine, often accompanied by a distinct burning oil smell, are the first signs of a failing cylinder head cover. If ignored, the leaks can worsen, leading to significant oil loss and potential engine damage from low oil levels. Continued operation risks internal engine component damage due to inadequate lubrication.

Installation Tip

Always replace the cylinder head cover gasket when installing a new cover to ensure a proper seal. Ensure the cylinder head surface is clean and free of old gasket material before mounting the new cover.

Service Note

When replacing the cylinder head cover, inspect the valve stem seals and the valve train components for wear or damage.