CATEngine Parts

265-8726 Boom Cylinder Bushing — Cat 304C 305

This is a boom cylinder bushing, a vital component within the hydraulic system of excavators, providing a low-friction pivot point for the boom cylinder. It is manufactured to meet stringent OEM quality standards, offering superior wear resistance and smooth operation compared to a worn or damaged bushing. Operators may notice increased play or looseness in the boom operation, hydraulic fluid leaks from the cylinder seal area, or unusual noises during boom movement when this bushing begins to fail.

Boom Cylinder Bushing – Part No 265-8726 – 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 TypeBoom Cylinder Bushing
MaterialBronze Alloy
ApplicationHydraulic Boom Cylinder
Service LifeReplace based on visual inspection and play
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first indication of a worn boom cylinder bushing is noticeable play or looseness in the boom's movement, often accompanied by a clunking sound. As wear progresses, this can lead to increased stress on the cylinder rod and seals, potentially causing hydraulic leaks. The worst consequence is uncontrolled boom movement or damage to the cylinder rod and mounting points.

Installation Tip

Carefully clean the cylinder bore and the pin before installing the new bushing to ensure a proper fit and prevent damage. Avoid using excessive force to press the bushing into place; it should seat smoothly.

Service Note

Inspect the boom cylinder rod for scoring or wear, and check the condition of the cylinder seals when replacing the bushing.