CATEngine Parts

369-1255 Belt Tensioner — Cat

This belt tensioner is a vital component of the engine's accessory drive system, maintaining optimal tension on the drive belts. It is constructed with durable bearings and a robust spring mechanism to ensure consistent belt pressure, unlike a worn tensioner that may allow belts to slip or flap. Operators may notice squealing noises from the belts, premature belt wear, or intermittent charging system warnings when this tensioner fails.

Belt Tensioner – Part No 369-1255 – 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 TypeBelt Tensioner
MaterialSteel, Rubber
ApplicationEngine Accessory Drive System
Service LifeReplace every 2,000 hrs or as needed
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first indication of a failing belt tensioner is often a persistent squealing sound from the drive belts. If the tensioner loses its effectiveness, the belts may start to slip, leading to reduced performance of driven accessories like the alternator or water pump. Continued operation with a faulty tensioner can cause rapid belt wear and potential overheating.

Installation Tip

Ensure the mounting surfaces are clean and that the tensioner arm pivots freely before installation. Avoid forcing the tensioner arm beyond its designed range of motion during belt installation.

Service Note

Inspect all drive belts for wear and proper alignment when replacing the belt tensioner.