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331.05.0002 Fan Belt Tensioner, Cooling System
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331.05.0002 Irisbus Compatible Fan Belt Tensioner

331.05.0002

Summary

This fan belt tensioner is engineered for heavy commercial vehicle cooling systems. It is compatible with Irisbus models including CITELIS, RECREO, and ACCESS BUS II, ensuring precise belt tensioning for Cursor 8 engines. Designed to withstand demanding thermal cycles in bus applications. Equivalent to OE Dayco APV1063 and Iveco 500346227.

Product identifiers
EAN Code8699031093475
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Compatible OEM Codes

  • IVECO
    • 504106749
    • 500346227
  • DAYCO
    • APV1086
    • APV1063

Description

What does a fan belt tensioner do?

The fan belt tensioner is a critical component within the engine cooling system that maintains the correct tension on the belt driving the fan. By providing constant resistance and compensating for belt stretch, this part ensures the fan rotates at the required speed to prevent engine overheating. This component is vital for the operational stability of heavy commercial vehicle cooling drives.

Compatible Irisbus models and engines

This specific tensioner is compatible with various Irisbus models such as the CITELIS, RECREO, ACCESS BUS II, MY WAY, EUROCLASS, EURORIDER, and EUROPOLIS. It is specifically designed to function with Cursor 8 and Cursor 8 CNG engines, ensuring reliable performance across these bus platforms. It is also fitted to Iveco vehicles.

Installation and maintenance guidance

For professional workshop technicians, maintaining the cooling drive requires precise installation. When replacing this unit, it is essential to inspect the belt condition and pulley alignment. Proper mounting ensures that the spring-loaded mechanism can effectively manage belt slack during high-torque operation and varying thermal conditions.

Preventative maintenance and troubleshooting

Regular inspection of the tensioner assembly helps prevent sudden belt failure or fan slippage. If noise or excessive vibration is detected in the cooling system, checking the tensioner's ability to absorb movement is a recommended first step for fleet managers.

OE cross-reference

331.05.0002 (Fan Belt Tensioner Fan) is the equivalent of the Dayco and Iveco OE numbers. This part directly replaces Dayco OE numbers APV1063, APV1086. It also replaces Iveco OE numbers 500346227, 504106749.

Other OEMs

DAYCO

  • APV1086
  • APV1063

IVECO

  • 504106749
  • 500346227

Compatible Vehicles

Compatible Vehicles
BrandModelModel TypeEngine
DAYCO
IRISBUS ACCESS BUS II GX 327
IRISBUS ACCESS BUS II GX 327 CNG Cursor 8 CNG
IRISBUS CITELIS 10.5
IRISBUS CITELIS 12
IRISBUS CITELIS 12 CNG Cursor 8 CNG
IRISBUS CITELIS 18 CNG
IRISBUS CITELIS 18 CNG Cursor 8 CNG
IRISBUS CITELIS Line
IRISBUS EUROCLASS .35 Cursor 8
IRISBUS EUROPOLIS 203E.9.27 CNG Cursor 8 CNG
IRISBUS EURORIDER EuroRider 8
IRISBUS EURORIDER EuroRider 8 Cursor 8
IRISBUS MY WAY 399.35 Cursor 8
IRISBUS RECREO 12.8m
IRISBUS RECREO 12m
IVECO

FAQ

What is the function of a fan belt tensioner?
The tensioner maintains constant pressure on the fan belt, compensating for material stretch to ensure the cooling fan rotates at the correct speed.
Which Irisbus models are compatible with this part?
This part fits several Irisbus series including CITELIS, RECREO, ACCESS BUS II, MY WAY, EUROCLASS, EURORIDER, and EUROPOLIS.
Can this be used on Iveco vehicles?
Yes, this component is also designed to be compatible with Iveco vehicle applications.
How do I know if a tensioner needs replacement?
Technicians should look for signs of belt slipping, unusual squealing noises from the cooling system, or visible excessive vibration during engine operation.
What are the OE reference numbers of this part?
331.05.0002 directly replaces Dayco OE numbers APV1063, APV1086. It also replaces Iveco OE numbers 500346227, 504106749.