CATEngine Parts

156-6988 18 Pieces Cylinder Head Bolt — Cat 3013 3014

This set of 18 cylinder head bolts is essential for securely fastening the cylinder head to the engine block, ensuring a proper seal for the combustion chamber and preventing coolant and oil leaks. Manufactured to precise torque and tensile strength specifications, these bolts provide reliable clamping force superior to worn or stretched bolts that can lead to head gasket failure. Operators may notice coolant leaks, oil leaks between the head and block, or white smoke from the exhaust if these bolts have lost their clamping force.

18 Pieces Cylinder Head Bolt – Part No 156-6988 – 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 steel
ApplicationCylinder head to engine block fastening
Service LifeReplace during cylinder head service
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial symptoms of compromised cylinder head bolts may include minor coolant leaks at the head gasket mating surface or a slight loss of compression. If the bolts continue to loosen or fail, significant coolant or oil leaks can occur, and combustion gases may enter the cooling system, causing overheating. Persistent issues can lead to severe head gasket failure and potential engine damage.

Installation Tip

Always clean the bolt holes in the engine block thoroughly to ensure accurate torque readings and prevent bottoming out. Follow the manufacturer's specified tightening sequence and torque specifications precisely to ensure even clamping pressure.

Service Note

When replacing cylinder head bolts, it is critical to inspect the cylinder head and engine block surfaces for flatness and damage, and replace the head gasket.