CATEngine Parts

348-9904 Bare Cylinder Block — Cat C27 C32

This is a CAT Bare Cylinder Block, the foundational casting that houses the engine's cylinders, crankshaft, and other critical components. Manufactured to meet strict OEM specifications, it provides a robust and precise foundation for engine rebuilding, unlike a cracked or worn block. Operators may experience significant engine performance issues, such as loss of power, excessive oil consumption, or coolant leaks into the cylinders, when this core component fails.

Bare Cylinder Block – Part No 348-9904 – 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 TypeBare Cylinder Block
MaterialHigh-strength cast iron
ApplicationEngine core component
Service LifeDesigned for full engine life cycle
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A failing cylinder block may first manifest as persistent coolant loss without visible external leaks, or noticeable white smoke from the exhaust indicating coolant entering the combustion chambers. If left unaddressed, this can lead to severe internal engine damage, including bearing failure and piston seizure due to contamination. The ultimate risk is complete engine destruction, necessitating a costly rebuild or replacement.

Installation Tip

Ensure all threaded holes in the block are clean and chased before installing main bearing caps and the crankshaft. Verify the block deck surface is perfectly flat and clean before installing the cylinder head.

Service Note

When installing a new cylinder block, it is critical to replace all engine bearings, seals, gaskets, and inspect the crankshaft for straightness.