CATEngine Parts

124-2124 Permanent Coupling 124 2 — Cat 3306 C27

This is a CAT Permanent Coupling, a mechanical device used to connect two rotating shafts, typically for transmitting torque in engine or drivetrain applications. It is manufactured to meet OEM specifications, ensuring precise alignment and reliable power transfer, unlike a worn coupling that might exhibit vibration or backlash. Operators may notice increased vibration, unusual noises during acceleration or deceleration, or a loss of power transmission as signs of a failing coupling.

Permanent Coupling 124 2 – Part No 124-2124 – 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.

WhatsApp for Price & Availability☎ Call Mumbai Office

Parts Trading Company  ·  Mumbai, Est. 1956  ·  Same-day dispatch  ·  Ships worldwide  ·  GST invoice included

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Related CAT Parts

From the same category — may also be needed

140-3639
Hydraulic Oil Cooler
126-1817
Oil Filter
250-0841
Turbo B2G Turbocharger
286-6913
Oil Cooler
6F1754
Engine Parts Component
4w-0452
Crankshaft Oil Seal

Browse all CAT Engine Parts →

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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 TypePermanent Coupling
MaterialForged steel
ApplicationShaft connection and torque transfer
Service LifeReplace as needed based on inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Increased vibration felt through the machine, particularly during changes in engine speed, is a common initial symptom. This can progress to audible clunking or grinding noises as the coupling components wear. If left unaddressed, the coupling can fail completely, resulting in a loss of power transmission to the driven component.

Installation Tip

Ensure the shafts are properly aligned before installing the coupling to prevent premature wear. Do not force the coupling onto the shafts; it should fit snugly but without excessive force.

Service Note

Inspect the connected shafts for wear, damage, and proper alignment when replacing the permanent coupling.