CATEngine Parts

5i-7718 26 Pieces Cylinder Head Bolt — Cat 320B

This is a set of 26 cylinder head bolts designed to secure the cylinder head to the engine block, ensuring a proper seal for combustion. Manufactured to meet stringent CAT quality standards, these bolts provide superior tensile strength and thread integrity compared to worn or stretched fasteners. Failure can manifest as coolant leaks into the combustion chamber or oil passages, rough engine running, or a loss of compression, often accompanied by visible external leaks.

26 Pieces Cylinder Head Bolt – Part No 5i-7718 – 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 Bolt Set
MaterialHigh-strength forged steel
ApplicationEngine cylinder head sealing
Service LifeReplace as needed during engine overhaul
CompatibilityCAT specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial signs of failing cylinder head bolts may include subtle coolant loss or a slight rough idle. If ignored, this can progress to persistent overheating, visible external leaks of coolant or oil, and a noticeable drop in engine power due to compression loss. Continued operation risks internal engine damage from coolant contamination.

Installation Tip

Always clean the bolt holes in the engine block thoroughly to ensure accurate torque readings. Overtightening can strip threads or stretch the bolts beyond their yield point.

Service Note

Inspect the cylinder head gasket for signs of damage or blow-by, and check the cylinder head for flatness during replacement.