CATEngine Parts

375-8345 Belt Tensioner — Cat 325D

This belt tensioner is a critical component of the engine's accessory drive system, ensuring proper belt tension for optimal performance of components like the alternator and water pump. It is manufactured to meet stringent OEM standards, providing superior durability and consistent tension compared to a worn or seized unit. Operators may notice excessive belt noise, premature belt wear, or a lack of charging system output when this tensioner begins to fail.

Belt Tensioner – Part No 375-8345 – 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

M IST.', };

Related CAT Parts

From the same category — may also be needed

1W6586
Engine Parts Component
7k-3526
Universal Joint
096-4499
6 Pieces Push Rod
2w-7960
Crankshaft
3564787PK
Body-Stl P
373-5283
Temperature Sensor

Browse all CAT Engine Parts →

Ship This Part To Your Location

DubaiSaudi ArabiaNigeriaKenyaSouth AfricaBangladeshMalaysiaGhanaQatarEgypt
India
MaharashtraGujaratTamil NaduRajasthanKarnatakaTelangana

Full shipping information on regional pages · Air freight 2–12 days · GST invoice for India

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 Assembly
MaterialSteel and Rubber
ApplicationEngine accessory drive system
Service LifeReplace every 3,000 hrs or as needed
CompatibilityCAT 375-8345
ConditionNew — OEM specification aftermarket

Failure Symptoms

A failing belt tensioner often begins with a chirping or squealing noise from the engine bay, especially on startup or under load. If left unaddressed, the belt may start to slip, leading to intermittent charging system warnings or overheating. Continued operation with a faulty tensioner can result in belt breakage, causing a loss of power steering, alternator function, and water pump operation.

Installation Tip

Ensure the mounting surfaces are clean and free of debris before installation to guarantee a proper seal and prevent leaks. Do not overtighten the mounting bolts, as this can strip the threads or damage the tensioner housing.

Service Note

Inspect the condition of the accessory drive belt and all pulleys for wear or damage when replacing the belt tensioner.