VolvoEngine Parts

3848896 — Idler Pulley 21280913 3848896 For Volvo Penta Engine D4-180I 225A D6-330I 300D

This idler pulley serves to guide and tension the engine's accessory drive belt, ensuring proper operation of components like the alternator and power steering pump. It is built with high-quality bearings and a durable pulley surface to withstand continuous rotation and belt load, unlike a worn pulley with a noisy or seized bearing. Operators might notice a persistent squealing or grinding noise from the pulley area, excessive belt vibration, or a belt that repeatedly slips off its track.

Idler Pulley 21280913 3848896 For Volvo Penta Engine D4-180I 225A D6-330I 300D – Part No 3848896 – 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.

WhatsApp for Price & Availability☎ Call Mumbai Office

Parts Trading Company  ·  Mumbai, Est. 1956  ·  Same-day dispatch  ·  Ships worldwide  ·  GST invoice included

Related Volvo Parts

From the same category — may also be needed

20457273
V-Ribbed Belt A/C 20457273 6Pk1620 For Cummins Engine Isx Volvo 850 96
32213096
Engine Timing Belt Kit 32213096 For Volvo S60 S80 S90 Xc40 Xc60 Xc90 2
21210530
Fuel Level Sensor 21210530 21714563 For Volvo Engine D11 D13 D16 Heavy
4040752
Turbo Hx40W Turbocharger 4031221H 4040752 For Volvo Engine D7 Truck Fm
22590479
Turbo Gt2260S Turbocharger 22590479 For Volvo Penta Engine Tad540-42Ve
FPFL2411234
Fuel Injector 21306972 Bebe5G04001 For Volvo Engine Md16 Truck

Browse all Volvo 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 TypeIdler Pulley
MaterialSteel and bearing
ApplicationAccessory belt drive system
Service LifeReplace as needed based on noise or play
CompatibilityVolvo Penta 21280913, 3848896
ConditionNew — OEM specification aftermarket

Failure Symptoms

A worn idler pulley often begins to make noise, such as a grinding or squealing sound, especially when the engine is running. If the pulley bearing becomes excessively loose, it can cause the accessory belt to vibrate or even come off the pulleys, leading to a loss of function for components driven by the belt. Continued operation with a noisy or loose idler pulley risks damage to the accessory belt and other belt-driven components.

Installation Tip

Before removing the old pulley, check for any side-to-side play in the bearing, which indicates wear. Ensure the mounting bolt is tightened to the manufacturer's specification to prevent the pulley from loosening.

Service Note

When replacing an idler pulley, it is best practice to also replace the accessory drive belt and inspect the tensioner pulley for proper operation.