VolvoEngine Parts

3680194 — Belt Tensioner 3680194 For Cummins Engine Isx X15 Isx15 Qsx15 Perterbilt 378 379 387 Volvo Vnl Kenworth T2000 T600A

This Belt Tensioner is an automatic device that maintains the correct tension on the engine's accessory drive belt, ensuring optimal power transfer to components like the alternator and water pump. It is constructed with a robust spring mechanism and durable bearings to provide consistent tension over time. A worn tensioner can lead to belt slippage, noise, and premature wear on the belt and other accessories, indicated by a flapping belt or a rattling noise.

Belt Tensioner 3680194 For Cummins Engine Isx X15 Isx15 Qsx15 Perterbilt 378 379 387 Volvo Vnl Kenworth T2000 T600A – Part No 3680194 – Volvo Spare Part
Part Specifications
BrandVolvo
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, high-strength plastic
ApplicationEngine accessory drive belt system
Service LifeReplace every 100,000 miles or as needed
CompatibilityCummins ISX, QSX15; Volvo VNL
ConditionNew — OEM specification aftermarket

Failure Symptoms

A failing belt tensioner often first presents as a noticeable rattling or squeaking noise from the engine's accessory drive area. If the tensioner weakens further, it can cause the drive belt to flap or slip, leading to intermittent loss of function for accessories like the alternator. The worst outcome is the belt breaking due to improper tension, potentially causing overheating and damage to other engine components.

Installation Tip

When installing, ensure the tensioner arm pivots freely and returns smoothly without binding. Do not use excessive force to retract the tensioner arm; use the designated tool or a socket wrench on the pulley bolt.

Service Note

Always inspect the condition and alignment of all accessory pulleys when replacing the belt tensioner.