CATEngine Parts

8e-8304 Thrust Disc — Cat 3306 3406

This thrust disc is a vital component within the engine's rotating assembly, designed to absorb axial loads and maintain proper clearances. Manufactured from high-grade materials to meet OEM standards, it provides superior durability over a worn disc that has lost its precise dimensions. Operators may notice increased engine noise, particularly at higher RPMs, or a reduction in engine oil pressure when this part begins to fail.

Thrust Disc – Part No 8e-8304 – 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 TypeThrust Disc
MaterialSteel alloy with bearing surface
ApplicationEngine crankshaft and connecting rod bearings
Service LifeReplace as part of engine overhaul or upon wear detection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Early signs of a failing thrust disc include a noticeable increase in engine noise, often described as a knocking or rattling sound, especially under load. If ignored, this can lead to increased crankshaft end play, potentially causing damage to adjacent components. Continued operation risks severe crankshaft and bearing damage.

Installation Tip

Ensure the crankshaft and bearing surfaces are meticulously clean and lubricated before installing the thrust discs. Incorrect installation can lead to immediate wear and failure.

Service Note

Inspect crankshaft journals and main bearing clearances when replacing thrust discs.