1924 Views Updated 27 September 2026

331.01.0024 Mercedes-Benz AXOR 2 Cooling Fan Tensioner

331.01.0024

Summary

This fan belt tensioner is engineered for Mercedes-Benz AXOR and AXOR 2 models equipped with OM 457 LA engines. It ensures constant, balanced pressure on the cooling system belt to prevent slipping and maintain optimal engine temperature during heavy-duty operation. Equivalent to OE Mercedes-Benz 4572003070.

Product identifiers
EAN Code	8699031092720

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Compatible OEM Codes

MERCEDES BENZ
- 457 200 44 70
- 457 200 42 70
- 457 200 30 70

Description

What does a fan belt tensioner do?

This fan belt tensioner is a vital mechanical component within the cooling system of heavy commercial vehicles, specifically designed to maintain the correct tension on the belt driving the fan. By providing constant, balanced pressure, it ensures that the fan rotates at its designed speed, which is critical for effective engine cooling during demanding transport tasks.

Compatible Mercedes-Benz vehicles and engines

This component is specifically fitted to Mercedes-Benz AXOR and AXOR 2 trucks, including variants such as the 3240 K, 3236 K, 2636 K, 2543 L, and 1843 LS. It is highly compatible with vehicles powered by the OM 457 LA engine. This part ensures reliable performance across various configurations, from tractor units to heavy trucks.

Installation and maintenance guidance

For workshop technicians and fleet managers, maintaining this component is essential to prevent belt slip or premature wear. When replacing this unit, it is recommended to inspect the pulley diameter and the condition of the belt itself. Proper installation ensures that the spring-loaded mechanism can effectively compensate for any belt stretch caused by heat or mileage.

Troubleshooting and selection

Regular inspection of the tensioner helps prevent overheating issues caused by improper fan speed. Consult your authorized distributor to ensure exact fitment for your specific vehicle configuration.

OE cross-reference

331.01.0024 (Fan Belt Tensioner Fan) is the equivalent of the Mercedes-Benz OE numbers. This part directly replaces Mercedes-Benz OE numbers 4572003070, 4572004270, 4572004470.

Other OEMs

MERCEDES BENZ

A4572004470
A4572004270
A4572003070
4572004470
4572004270
4572003070
457.200.4470
457.200.44.70
457.200.4270
457.200.42.70
457.200.3070
457.200.30.70
457 200 4470
457 200 4270
457 200 3070
457 200 44 70
457 200 42 70
457 200 30 70

Compatible Vehicles

Compatible Vehicles
Brand	Model	Model Type	Engine
MERCEDES BENZ	AXOR	1835 LS	OM 457 LA
MERCEDES BENZ	AXOR	1840 LS	OM 457 LA
MERCEDES BENZ	AXOR	1843 LS	OM 457 LA
MERCEDES BENZ	AXOR	2535 LS	OM 457 LA
MERCEDES BENZ	AXOR	2540 LS	OM 457 LA
MERCEDES BENZ	AXOR	2543 LS	OM 457 LA
MERCEDES BENZ	AXOR 2	1835 LS	OM 457 LA
MERCEDES BENZ	AXOR 2	1836 LS	OM 457 LA
MERCEDES BENZ	AXOR 2	1840 LS	OM 457 LA
MERCEDES BENZ	AXOR 2	1843 LS	OM 457 LA
MERCEDES BENZ	AXOR 2	2436 LS	OM 457 LA
MERCEDES BENZ	AXOR 2	2443 LS	OM 457 LA
MERCEDES BENZ	AXOR 2	2535 L	OM 457 LA
MERCEDES BENZ	AXOR 2	2535 LS	OM 457 LA
MERCEDES BENZ	AXOR 2	2536 L	OM 457 LA
MERCEDES BENZ	AXOR 2	2536 LL	OM 457 LA
MERCEDES BENZ	AXOR 2	2536 LS	OM 457 LA
MERCEDES BENZ	AXOR 2	2540 L	OM 457 LA
MERCEDES BENZ	AXOR 2	2540 LS	OM 457 LA
MERCEDES BENZ	AXOR 2	2543 L	OM 457 LA
MERCEDES BENZ	AXOR 2	2543 LS	OM 457 LA
MERCEDES BENZ	AXOR 2	2543 S	OM 457 LA
MERCEDES BENZ	AXOR 2	2635 B	OM 457 LA
MERCEDES BENZ	AXOR 2	2635 K	OM 457 LA
MERCEDES BENZ	AXOR 2	2636 B	OM 457 LA
MERCEDES BENZ	AXOR 2	2636 K	OM 457 LA
MERCEDES BENZ	AXOR 2	2640 B	OM 457 LA
MERCEDES BENZ	AXOR 2	2640 K	OM 457 LA
MERCEDES BENZ	AXOR 2	2643 B	OM 457 LA
MERCEDES BENZ	AXOR 2	2643 K	OM 457 LA
MERCEDES BENZ	AXOR 2	3235 B	OM 457 LA
MERCEDES BENZ	AXOR 2	3235 K	OM 457 LA
MERCEDES BENZ	AXOR 2	3236 B	OM 457 LA
MERCEDES BENZ	AXOR 2	3236 K	OM 457 LA
MERCEDES BENZ	AXOR 2	3240	OM 457 LA
MERCEDES BENZ	AXOR 2	3240 B	OM 457 LA
MERCEDES BENZ	AXOR 2	3240 K	OM 457 LA
MERCEDES BENZ	AXOR 2	3243	OM 457 LA
MERCEDES BENZ	AXOR 2	3243 B	OM 457 LA
MERCEDES BENZ	AXOR 2	3243 K	OM 457 LA
MERCEDES BENZ	AXOR 2	3335	OM 457 LA
MERCEDES BENZ	AXOR 2	3335 B	OM 457 LA
MERCEDES BENZ	AXOR 2	3335 K	OM 457 LA
MERCEDES BENZ	AXOR 2	3335 S	OM 457 LA
MERCEDES BENZ	AXOR 2	3336 B	OM 457 LA
MERCEDES BENZ	AXOR 2	3336 K	OM 457 LA
MERCEDES BENZ	AXOR 2	3340	OM 457 LA
MERCEDES BENZ	AXOR 2	3340 B	OM 457 LA
MERCEDES BENZ	AXOR 2	3340 K	OM 457 LA
MERCEDES BENZ	AXOR 2	3340 S	OM 457 LA
MERCEDES BENZ	AXOR 2	3341	OM 457 LA
MERCEDES BENZ	AXOR 2	3341 K	OM 457 LA
MERCEDES BENZ	AXOR 2	3341 S	OM 457 LA
MERCEDES BENZ	AXOR 2	3343	OM 457 LA
MERCEDES BENZ	AXOR 2	3343 B	OM 457 LA
MERCEDES BENZ	AXOR 2	3343 K	OM 457 LA
MERCEDES BENZ	AXOR 2	3343 S	OM 457 LA
MERCEDES BENZ	AXOR 2	4135 B	OM 457 LA
MERCEDES BENZ	AXOR 2	4135 K	OM 457 LA
MERCEDES BENZ	AXOR 2	4136 B	OM 457 LA
MERCEDES BENZ	AXOR 2	4136 K	OM 457 LA
MERCEDES BENZ	AXOR 2	4140 B	OM 457 LA
MERCEDES BENZ	AXOR 2	4140 K	OM 457 LA
MERCEDES BENZ	AXOR 2	4143 B	OM 457 LA
MERCEDES BENZ	AXOR 2	4143 K	OM 457 LA
MERCEDES BENZ	AXOR 2	LL	OM 457 LA
MERCEDES BENZ	AXOR 2	LLS	OM 457 LA

FAQ

What is the function of this fan belt tensioner?

It is a spring-loaded unit that maintains constant tension on the fan belt, preventing slippage and ensuring the cooling fan rotates at the correct speed to regulate engine temperature.

Which engines is this part compatible with?

This specific tensioner is designed for Mercedes-Benz AXOR and AXOR 2 vehicles utilizing the OM 457 LA engine series.

How can I know if my tensioner needs replacement?

Technicians should look for signs of belt slipping, unusual noise from the pulley bearing, or uneven wear on the belt edges, which indicates insufficient or inconsistent tension.

Can this part be used in light commercial vehicles?

No, this component is engineered specifically for heavy commercial vehicles like Mercedes-Benz AXOR trucks and is not suitable for passenger cars or light-duty vehicles.

What are the OE reference numbers of this part?

331.01.0024 directly replaces Mercedes-Benz OE numbers 4572003070, 4572004270, 4572004470.