CATEngine Parts

366-0669-20r-0956 12V 240A Alternator — Cat C13 C15

This 12V 240A alternator is a critical component of the engine's electrical system, responsible for recharging the batteries and powering electrical equipment while the engine is running. It is manufactured to meet stringent OEM quality standards, ensuring superior durability and performance compared to worn units exhibiting reduced output or bearing noise. Operators may notice dimming lights, a battery warning light on the dash, or difficulty starting the engine if this alternator fails.

12V 240A Alternator – Part No 366-0669-20r-0956 – 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 TypeAlternator
MaterialSteel, copper, aluminum
ApplicationEngine electrical system
Service LifeReplace every 4,000 hrs or 3 years
CompatibilityCAT specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A failing alternator may initially present as intermittent dimming of lights or a weak battery charge. If left unaddressed, the battery will eventually lose its charge, leading to engine stalling and inability to restart. Continued operation with a failing alternator risks damage to other sensitive electrical components due to voltage fluctuations.

Installation Tip

Before installing, ensure the battery is disconnected to prevent electrical shorts. Avoid overtightening the drive belt, as excessive tension can damage the alternator bearings and shaft.

Service Note

Inspect the drive belt and tensioner for wear or proper function, and check battery terminals for corrosion during alternator replacement.