VolvoEngine Parts

3920408 — Crankshaft Front Oil Seal 3920408 For Cummins Engine C8.3 Isbe4 Isc Isl Qsc8.3 Volvo Excavator Ec240

This crankshaft front oil seal is a vital component that prevents lubricating oil from escaping the engine's front cover and keeps external contaminants from entering the crankcase. It creates a dynamic seal around the rotating crankshaft. A worn or damaged seal will allow oil to leak onto the front of the engine, potentially dripping onto the ground and the exhaust manifold, and can lead to oil starvation if not addressed.

Crankshaft Front Oil Seal 3920408 For Cummins Engine C8.3 Isbe4 Isc Isl Qsc8.3 Volvo Excavator Ec240 – Part No 3920408 – Volvo Spare Part
Part Specifications
BrandVolvo
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 Front Oil Seal
MaterialNBR Rubber / Steel Reinforcement
ApplicationEngine Front Cover
Service LifeReplace during engine front cover or timing belt service
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The most common symptom of a failing crankshaft front oil seal is visible oil leakage from the front of the engine, often appearing on the crankshaft pulley and potentially dripping onto the ground. If left unaddressed, this can lead to a significant loss of engine oil, potentially causing lubrication failure and severe internal engine damage. It can also lead to oil contamination of the accessory drive belt.

Installation Tip

Carefully inspect the crankshaft snout for any nicks or burrs that could damage the new seal during installation. Use a proper seal driver to ensure the seal is installed perfectly square and at the correct depth.

Service Note

When replacing the crankshaft front oil seal, inspect the condition of the crankshaft pulley or harmonic balancer for wear or damage.