CATEngine Parts

140-5169 Cylinder Bushing — Cat 302 303

This cylinder bushing is a wear-resistant liner inserted into the engine cylinder, providing a smooth surface for the piston to reciprocate against. It is precision-machined from durable materials to withstand high friction and heat, offering superior longevity over a worn or scored cylinder. Operators may observe increased oil consumption, blue smoke from the exhaust, or a loss of engine compression when this bushing is failing.

Cylinder Bushing – Part No 140-5169 – 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 Liner / Bushing
MaterialCast iron
ApplicationEngine cylinder bore
Service LifeReplace during engine overhaul
CompatibilityCAT 302.5, 303, 303.5E, 304, 304E
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first indication of a failing cylinder bushing is often increased engine oil consumption and visible blue smoke from the exhaust. If left unaddressed, this can lead to a significant loss of engine power and compression, potentially causing piston and ring damage. Continued operation risks severe internal engine wear and reduced operational lifespan.

Installation Tip

Ensure the cylinder block bore is meticulously cleaned and deburred before installing the new bushing. Avoid using excessive force during installation, as this can damage the bushing or the cylinder block.

Service Note

Always replace the piston rings when installing new cylinder bushings and inspect the pistons for wear or damage.