CATEngine Parts

528-5683 Crankshaft Seal — Cat 330D

This crankshaft seal is designed to prevent oil from escaping the engine crankcase and to keep contaminants out of the oil. Manufactured to high standards, it offers superior sealing compared to a worn or cracked seal, ensuring optimal engine lubrication and protection. Symptoms of a failing seal include oil drips under the engine, a burning oil smell, and a potential drop in oil pressure.

Crankshaft Seal – Part No 528-5683 – 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 TypeCrankshaft Seal
MaterialNBR rubber
ApplicationEngine crankshaft
Service LifeReplace every 3,000 hrs or as needed
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The most common initial symptom is visible oil leakage from the crankshaft area, often noticed on the ground beneath the engine. If ignored, the leak will likely worsen, leading to a significant loss of engine oil and potential lubrication issues. Persistent oil loss can compromise engine components due to inadequate lubrication.

Installation Tip

Carefully inspect the crankshaft surface for any nicks or burrs that could damage the new seal during installation. Ensure the seal is pressed in perfectly square to prevent premature wear or leaks.

Service Note

Inspect the crankshaft for wear or damage and clean the sealing surface thoroughly before installing the new seal.