1630 Views Updated 27 September 2026

331.01.0015 Mercedes-Benz AXOR compatible Fan Tensioner

331.01.0015

Summary

This fan belt tensioner is engineered for Mercedes-Benz AXOR models equipped with OM 457 LA engines. It maintains precise belt tension to ensure consistent cooling system performance in heavy commercial vehicles. Equivalent to OE Dayco APV1096 and Mercedes-Benz 4572001970.

Product identifiers
EAN Code	8699031092645

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Compatible OEM Codes

MERCEDES BENZ
- 460 200 09 70
- 457 200 19 70
DAYCO
- APV1096

Description

What does a fan belt tensioner do?

This fan belt tensioner plays a critical role in the cooling system of heavy commercial vehicles by maintaining the correct tension on the belt driving the fan. By applying constant, balanced pressure, it prevents belt slippage and ensures the fan rotates at its designed speed to manage engine temperatures effectively.

Compatible Mercedes-Benz models and engines

Designed for Mercedes-Benz AXOR and AXOR 2 series, this component is specifically compatible with OM 457 LA engines. It fits various configurations including the 1843 LS, 2543 LS, and 3343 B models, ensuring reliable operation across the axle and chassis range. Check the compatibility list to confirm fitment for your specific vehicle variant.

Installation and maintenance guidance

To ensure proper installation, technicians should verify the engine code and mounting type. Regular inspection of the tensioner arm and pulley is recommended to prevent belt wear or overheating caused by improper tension. Maintaining this component helps prevent sudden cooling system failures during heavy-duty operation.

Selection and reliability

Selecting a high-strength component ensures long-term reliability under thermal stress and vibration. This unit serves as a reliable replacement for those seeking to maintain engine cooling efficiency in heavy commercial fleets.

OE cross-reference

331.01.0015 (Fan Belt Tensioner Fan) is the equivalent of the Dayco and Mercedes-Benz OE numbers. This part directly replaces Dayco OE number APV1096. It also replaces Mercedes-Benz OE numbers 4572001970, 4602000970.

Other OEMs

DAYCO

APV1096

MERCEDES BENZ

A4602000970
A4572001970
4602000970
460.200.0970
460.200.09.70
460 200 0970
4572001970
457.200.1970
457.200.19.70
457 200 1970
460 200 09 70
457 200 19 70

Compatible Vehicles

Compatible Vehicles
Brand	Model	Model Type	Engine
DAYCO
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	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	3341	OM 457 LA
MERCEDES BENZ	AXOR 2	3341 K	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	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 maintains constant, balanced pressure on the fan belt to prevent slipping and ensure the cooling fan rotates at the correct speed.

Which engines is this part compatible with?

This component is designed specifically for Mercedes-Benz OM 457 LA engines found in various AXOR series models.

How can I verify if this fits my Mercedes-Benz AXOR?

Technicians should cross-reference the engine code (OM 457 LA) and check the specific model variant against the compatibility list.

When should I replace the fan belt tensioner?

Replacement is advised if there is visible wear on the pulley, noise from the bearing, or if belt tension becomes inconsistent.

What are the OE reference numbers of this part?

331.01.0015 directly replaces Dayco OE number APV1096. It also replaces Mercedes-Benz OE numbers 4572001970, 4602000970.