331.03.0005 Belt Tensioner, Fan
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331.03.0005 VOLVO & RENAULT TRUCKS Belt Tensioner, Fan

331.03.0005

Summary

The VADEN ORIGINAL 331.03.0005 is a high-performance belt tensioner designed for the cooling system. This component is fully compatible with VOLVO (20487079, 21260406, 21479276), RENAULT TRUCKS (7420487079, 7421479276), and DAYCO (APV2383, APV2739) systems, ensuring reliable operation in heavy commercial vehicles.

EAN Code8699031093055
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Compatible OEM Codes

  • VOLVO 21479276 21260406 20487079
  • RENAULT TRUCKS 7421479276 7420487079
  • DAYCO APV2739 APV2383

Description

The 331.03.0005 belt tensioner plays a critical role in maintaining the optimal tension of the fan belt within the cooling system. By ensuring constant pressure, this component prevents belt slippage and stabilizes engine temperature regulation during heavy-duty operation. It is engineered with high-strength components to withstand the rigorous vibrations and thermal stresses typical of heavy commercial vehicle environments.

This part is the OE-equivalent of the DAYCO APV2383 and APV2739 systems used in VOLVO and RENAULT TRUCKS vehicles. Specifically, it serves as a precise replacement for OEM numbers 20487079, 21260406, 21479276, 7420487079, and 7421479276. This ensures seamless integration into the existing mechanical architecture of compatible heavy-duty trucks and buses.

For workshop technicians performing routine maintenance or major engine overhauls, this tensioner offers a direct fit for assembly ease. It is essential to inspect the belt surface and pulley alignment during installation to ensure maximum service life. Regular checks of the cooling system components help prevent unexpected downtime caused by belt irregularities or tension loss.

Maintaining the integrity of the fan belt system through high-grade parts like this one ensures that the cooling cycle remains uninterrupted even under peak load conditions.

Other OEMs

DAYCO

  • APV2739
  • APV2383

RENAULT TRUCKS

  • 7421479276
  • 7420487079

VOLVO

  • 21479276
  • 21260406
  • 20487079

Vehicles Used

BrandModelEngine
DAYCO
RENAULT TRUCKS
VOLVO

FAQ

What are the compatible OEM numbers for this belt tensioner?
This part is compatible with OEM numbers: 20487079, 21260406, 21479276 (VOLVO) and 7420487079, 7421479276 (RENAULT TRUCKS).
Which vehicle brands can use this product?
The product is designed for heavy commercial vehicles from brands such as VOLVO and RENAULT TRUCKS, and is compatible with DAYCO systems like APV2383 and APV2739.
What is the primary function of this part in the cooling system?
It functions as a fan belt tensioner to maintain constant pressure on the belt, ensuring stable engine cooling and preventing slippage during operation.
Is this part suitable for heavy-duty trucks?
Yes, it is engineered with high-strength components specifically for heavy commercial vehicle applications to ensure durability under stress.
Does it replace Dayco specific parts?
Yes, it is an OE-equivalent for DAYCO models including APV2383 and APV2739.