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331.01.0026 Fan Belt Tensioner, Cooling System
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331.01.0026 Fan Belt Tensioner for Mercedes-Benz

331.01.0026

Summary

This fan belt tensioner is designed for Mercedes-Benz heavy commercial vehicles. It maintains the correct tension on the fan belt to ensure consistent cooling performance and prevent belt slippage under heavy-duty operating conditions. Equivalent to OE Dayco APV2275 and Mercedes-Benz 6112000670.

Product identifiers
EAN Code8699031092768
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Compatible OEM Codes

  • MERCEDES BENZ
    • 646 200 04 70
    • 646 200 00 70
    • 611 200 06 70
  • DAYCO
    • APV2275

Description

What does a fan belt tensioner do?

This fan belt tensioner is a critical component within the cooling system of heavy commercial vehicles. It functions by applying constant, balanced pressure to the fan belt, ensuring it transmits torque effectively without slipping. By automatically taking up slack caused by heat and mileage, this unit keeps the fan spinning at its designed speed to maintain stable engine temperatures.

Vehicle compatibility

This component is compatible with Mercedes-Benz vehicles. It serves as a reliable replacement for original units to ensure the cooling system operates without interruption in trucks and buses.

Installation and maintenance

For professional installation, technicians should inspect the tensioner arm and pulley bearing for any signs of excessive play or noise. Ensuring proper alignment during mounting is essential to prevent uneven wear on the belt. Regular checks of the tensioning mechanism help prevent sudden cooling failures during heavy-duty operation.

Troubleshooting guidance

Consult your authorized distributor.

OE cross-reference

331.01.0026 (Fan Belt Tensioner Fan) is the equivalent of the Dayco and Mercedes-Benz OE numbers. This part directly replaces Dayco OE number APV2275. It also replaces Mercedes-Benz OE numbers 6112000670, 6462000070, 6462000470.

Other OEMs

DAYCO

  • APV2275

MERCEDES BENZ

  • A6462000470
  • A6462000070
  • A6112000670
  • 6462000470
  • 6462000070
  • 646.200.0470
  • 646.200.04.70
  • 646.200.0070
  • 646.200.00.70
  • 646 200 0470
  • 646 200 0070
  • 6112000670
  • 611.200.0670
  • 611.200.06.70
  • 611 200 0670
  • 646 200 04 70
  • 646 200 00 70
  • 611 200 06 70

Compatible Vehicles

Compatible Vehicles
BrandModelModel TypeEngine
DAYCO
MERCEDES BENZ

FAQ

What is the function of a fan belt tensioner?
It applies constant pressure to the fan belt to prevent slipping and automatically compensates for belt stretch, ensuring the fan turns at the correct speed.
Which vehicle brands are compatible with this part?
This specific component is designed for use in Mercedes-Benz heavy commercial vehicles.
How can I identify a failing tensioner?
Common signs include unusual squealing noises, visible belt flutter, or irregular engine temperature readings due to insufficient belt tension.
What materials are used in these components?
These units are manufactured using high-strength components designed to withstand the rigorous thermal and mechanical stresses of heavy-duty engines.
What are the OE reference numbers of this part?
331.01.0026 directly replaces Dayco OE number APV2275. It also replaces Mercedes-Benz OE numbers 6112000670, 6462000070, 6462000470.