CATEngine Parts

096-4402 Boom Cylinder Bushing — Cat 318B 320

This is a hardened steel bushing designed to provide a durable, low-friction bearing surface within the pivot point of a boom cylinder. It is manufactured to precise dimensions and hardness specifications to withstand the high loads and cyclical stress of excavator operation. A worn bushing will typically manifest as increased play or looseness in the boom connection, audible clunking noises during operation, or premature wear on the cylinder rod and pin.

Boom Cylinder Bushing – Part No 096-4402 – 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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Parts Trading Company  ·  Mumbai, Est. 1956  ·  Same-day dispatch  ·  Ships worldwide  ·  GST invoice included

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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
MaterialHardened steel
ApplicationExcavator boom pivot
Service LifeReplace as needed during undercarriage maintenance
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first indication of a worn boom cylinder bushing is often increased play or looseness in the boom's pivot joint, which may be accompanied by a clunking sound. If ignored, this wear will accelerate, potentially damaging the cylinder rod and the mating surfaces of the frame or boom. Continued operation with severely worn bushings can lead to unpredictable movement and increased stress on other hydraulic and structural components.

Installation Tip

Ensure the mounting surfaces and the bore for the bushing are perfectly clean and free of any burrs or debris before attempting installation. Press the new bushing in squarely to avoid damaging its seating surface or the bore.

Service Note

Inspect the boom cylinder rod for scoring or wear, and check the condition of the pivot pin and any associated seals.