CATHydraulic Parts

1K4378 Bolt — Cat 320C 320D

This is a high-strength bolt designed for robust fastening in heavy-duty equipment applications. Manufactured to meet precise OEM specifications, it offers superior tensile strength and resistance to vibration and fatigue. A compromised bolt can result in loose connections, component damage, or unexpected operational interruptions.

Bolt – Part No 1K4378 – CAT Spare Part
Part Specifications
BrandCAT
CategoryHydraulic 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

Flush hydraulic lines before fitting new components. Use only manufacturer-specified hydraulic fluid. Check O-rings and backup rings for correct orientation. Bleed air from system after installation.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeBolt
MaterialHardened Steel Alloy
ApplicationGeneral Equipment Fastening
Service LifeReplace if damaged, corroded, or during component repair
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A failing bolt may initially manifest as increased vibration or noise from the fastened area due to loosening. If the bolt fails or is lost, the connected components can shift, leading to misalignment, premature wear, or fluid leaks. The ultimate risk is the separation of critical components, impacting equipment function.

Installation Tip

Ensure the bolt threads and the corresponding nut or tapped hole are clean and free of debris before tightening. Never use a damaged or corroded bolt, as it may fail under load.

Service Note

Check the condition of any associated nuts, washers, or locking mechanisms when replacing a bolt.