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331.01.0008 Mercedes-Benz Compatible Fan Belt Tensioner

331.01.0008

Summary

This heavy-duty fan belt tensioner is designed for Mercedes-Benz cooling systems, ensuring constant belt tension to prevent slipping and maintain optimal fan speed. It is an essential component for engine temperature regulation in heavy commercial vehicles. Equivalent to OE Dayco APV1094 and Mercedes-Benz 4572001670S.

Product identifiers
EAN Code8699031092461
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Compatible OEM Codes

  • MERCEDES BENZ
    • 457 200 36 70S
    • 457 200 28 70
    • 457 200 26 70
    • 457 200 16 70S
  • DAYCO
    • APV1094

Description

This fan belt tensioner plays a critical role in the cooling system of heavy commercial vehicles by maintaining the correct tension on the fan belt. By applying constant pressure, it ensures the belt transmits torque without slipping, which keeps the fan turning at its designed speed to regulate engine temperature.

This component is compatible with Mercedes-Benz vehicles and is also suitable for various heavy commercial vehicle applications. It functions by automatically taking up the slack that develops as the belt stretches due to heat and mileage over time.

For optimal performance, technicians should inspect the tensioner during routine maintenance intervals to check for bearing wear or arm movement irregularities. Ensuring a stable tension prevents premature belt wear and maintains the integrity of the engine cooling chain.

Check the compatibility list.

OE cross-reference

331.01.0008 (Fan Belt Tensioner Fan) is the equivalent of the Dayco and Mercedes-Benz OE numbers. This part directly replaces Dayco OE number APV1094. It also replaces Mercedes-Benz OE numbers 4572001670S, 4572002670, 4572002870, 4572003670S.

Other OEMs

DAYCO

  • APV1094

MERCEDES BENZ

  • A4572003670
  • A4572002870
  • A4572002670
  • A4572001670
  • A04572003670S
  • A04572001670S
  • 4572003670
  • 4572002870
  • 4572002670
  • 4572001670
  • 457.200.3670
  • 457.200.36.70S
  • 457.200.36.70
  • 457.200.2870
  • 457.200.28.70
  • 457.200.2670
  • 457.200.26.70
  • 457.200.1670
  • 457.200.16.70S
  • 457.200.16.70
  • 457 200 3670
  • 457 200 2870
  • 457 200 2670
  • 457 200 1670
  • 457 200 36 70S
  • 457 200 28 70
  • 457 200 26 70
  • 457 200 16 70S

Compatible Vehicles

Compatible Vehicles
BrandModelModel TypeEngine
DAYCO
MERCEDES BENZ

FAQ

What is the function of a fan belt tensioner?
The fan belt tensioner applies constant pressure to the fan belt, preventing slippage and compensating for any slack caused by belt stretch, ensuring consistent cooling.
Which vehicles are compatible with this part?
This specific unit is compatible with Mercedes-Benz heavy commercial vehicles and their respective cooling systems.
How can I identify a failing tensioner?
Technicians may notice increased engine noise, belt fluttering, or signs of uneven wear on the belts, which often indicate a faulty tensioner or bearing.
Why is maintaining correct belt tension important?
Proper tension ensures the fan rotates at its designed speed, which is vital for maintaining stable engine temperatures in heavy duty applications.
What are the OE reference numbers of this part?
331.01.0008 directly replaces Dayco OE number APV1094. It also replaces Mercedes-Benz OE numbers 4572001670S, 4572002670, 4572002870, 4572003670S.