CATEngine Parts

226-4755 Crankshaft Seal — Cat C12 C13

This crankshaft seal is a crucial engine component that prevents oil from leaking out of the crankshaft's main bearing journals. Manufactured to meet stringent sealing standards, it provides reliable protection against oil loss compared to a worn or brittle seal. Operators may notice oil leaks around the crankshaft pulley, a drop in oil level, or blue smoke from the exhaust if this seal begins to fail.

Crankshaft Seal – Part No 226-4755 – 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 and steel
ApplicationEngine crankshaft sealing
Service LifeReplace when oil leaks are detected
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first indication of a failing crankshaft seal is typically the appearance of oil leaks around the crankshaft pulley or flywheel housing. If left unaddressed, these leaks can lead to a significant loss of engine oil, potentially causing lubrication failure and internal engine damage. Continued operation with a leaking seal risks severe engine component wear and potential seizure.

Installation Tip

Ensure the crankshaft surface where the seal rides is perfectly clean and free of any nicks or burrs before installation. Use a proper seal driver tool to install the seal squarely and avoid damaging its lip.

Service Note

Inspect the crankshaft pulley or flywheel for wear or damage, and check the condition of the oil pan and oil pump during seal replacement.