1101 Views Updated 27 September 2026

A4032005301 Mercedes-Benz AXOR 2 Water Pump

525.01.0030

Summary

Engine water pump compatible with Mercedes-Benz AXOR 2 models equipped with OM 457 LA engines. This heavy-duty component ensures reliable coolant circulation within the engine cooling system to maintain optimal operating temperatures. Equivalent to OE Mercedes-Benz A4032005301.

Product identifiers
EAN Code	8699031076874

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Compatible OEM Codes

MERCEDES BENZ
- 403 200 73 01
- 403 200 53 01

Description

What does a water pump do?

This water pump serves as a critical component within the engine cooling system, facilitating the continuous circulation of coolant between the engine block and the radiator. By maintaining consistent thermal regulation, it prevents overheating during heavy-duty operations and long-haul driving, protecting vital engine components from thermal stress.

Vehicle and engine compatibility

Designed specifically for Mercedes-Benz AXOR 2 series, this pump is compatible with various configurations including the 2636 B, 3240, and 2543 L models. It is engineered to work seamlessly with OM 457 LA engines, ensuring precise fitment for a wide range of axle and chassis variations used in heavy commercial vehicles.

Installation and maintenance guidance

For optimal performance, technicians should inspect the pump during routine belt service intervals. It is recommended to check for signs of leakage around the housing or unusual noise from the bearing. When replacing, ensure all mounting surfaces are clean to maintain a high-strength seal within the cooling circuit.

Importance of cooling system reliability

Maintaining a robust cooling system is essential for preventing serious engine damage caused by temperature fluctuations. This component provides reliable service for professional workshop technicians and fleet managers managing heavy commercial fleets.

OE cross-reference

525.01.0030 (Water Pump Water Pumps) is the equivalent of the Mercedes-Benz OE number. This part directly replaces Mercedes-Benz OE number A4032005301.

Other OEMs

MERCEDES BENZ

A4032007301
A4032005301
4032007301
4032005301
403.200.7301
403.200.73.01
403.200.5301
403.200.53.01
403 200 7301
403 200 5301
403 200 73 01
403 200 53 01

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	2435 LS	OM 457 LA
MERCEDES BENZ	AXOR 2	2436 LS	OM 457 LA
MERCEDES BENZ	AXOR 2	2440 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
MERCEDES BENZ	MK	1824	M 447 G
MERCEDES BENZ	MK	2524 L	M 447 G
MERCEDES BENZ	SK	2638	OM 402 LA
MERCEDES BENZ	SK	2638 L	OM 402 LA
MERCEDES BENZ	SK	3538	OM 402 LA

FAQ

What is the primary function of this water pump?

The water pump circulates coolant throughout the engine cooling system, moving fluid between the engine block and radiator to maintain the ideal operating temperature.

Which engines is this part compatible with?

This specific water pump is designed for use in Mercedes-Benz AXOR 2 vehicles equipped with OM 457 LA engines.

How can I identify if a water pump is failing?

Common indicators include coolant leaks from the weep hole, unusual mechanical noise from the bearing, or signs of engine overheating during operation.

When should the water pump be inspected?

It is best practice to inspect the water pump during every coolant or drive belt replacement to prevent unexpected system failure.

What are the OE reference numbers of this part?

525.01.0030 directly replaces Mercedes-Benz OE number A4032005301.