VolvoEngine Parts

21766717 — Truck, Renault Truck Idler Pulley Assembly

This idler pulley assembly is a crucial part of the engine's accessory drive system, guiding and maintaining tension on the serpentine belt that powers various components like the alternator and water pump. Manufactured to meet Volvo's stringent quality specifications, it offers smooth operation and long service life, unlike worn pulleys which may develop bearing noise or wobble. A failing idler pulley can cause belt noise, premature belt wear, or even lead to the belt jumping off its pulleys, potentially disabling essential engine functions.

Truck, Renault Truck Idler Pulley Assembly – Part No 21766717 – 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 21766717

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 TypeIdler Pulley Assembly
MaterialSteel and High-Strength Polymer
ApplicationEngine Accessory Drive System
Service LifeReplace every 200,000 km or 4 years
Compatibility21766717
ConditionNew — OEM specification aftermarket

Failure Symptoms

The initial symptom of a failing idler pulley is often an audible whining or grinding noise from the front of the engine, especially noticeable at idle or when the engine is revved. If ignored, the noise will intensify, and the pulley may start to wobble, causing the serpentine belt to vibrate or even slip. This can lead to a loss of power to critical components like the alternator and water pump, potentially causing engine overheating or electrical system failure.

Installation Tip

Before installing the new pulley, clean the mounting surface thoroughly to ensure a flush fit and prevent any stress on the new bearing. Never reuse the old mounting bolt, as it may be stretched or weakened; always use a new, correctly specified bolt.

Service Note

Always inspect the serpentine belt for wear and proper tension, and check the condition of the tensioner arm and pulley when replacing the idler pulley assembly.