VolvoEngine Parts

21479276 — Truck, Renault Truck Belt Tensioner Assembly

This belt tensioner assembly is a crucial component in the engine's accessory drive system, maintaining optimal tension on the serpentine belt. Manufactured with durable materials and precision bearings, it ensures consistent belt performance and prevents slippage. Operators may notice increased noise from the accessory drive, premature belt wear, or intermittent charging system issues when this tensioner begins to fail.

Truck, Renault Truck Belt Tensioner Assembly – Part No 21479276 – 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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Cross References & OEM Numbers

Alternate part numbers that interchange with Volvo 21479276

Fitment: Volvo Trucks: FH13: 2006> 2007 FM13: 2006> 2007, Renault Trucks: Kerax DXi13, Magnum DXi13

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 TypeSerpentine Belt Tensioner Assembly
MaterialSteel, high-strength polymer
ApplicationEngine accessory drive system
Service LifeReplace every 100,000 miles or as indicated by noise/wear
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A chirping or rattling noise from the front of the engine, particularly noticeable at idle or during acceleration, is an early indicator of a failing tensioner. The noise may become more pronounced, and the serpentine belt could start to slip, leading to intermittent issues with accessories like the alternator or power steering. Continued operation risks belt failure, causing a loss of power steering and alternator function.

Installation Tip

Before removing the old tensioner, note the direction of spring tension to ensure correct installation of the new unit. Do not reuse the old mounting bolt, as it may be stretched or weakened.

Service Note

Always replace the serpentine belt when replacing the belt tensioner assembly.