332.01.0008 Mercedes-Benz Fan Tension Roller
332.01.0008
Summary
High-strength fan tension roller designed for Mercedes-Benz heavy commercial vehicle cooling systems. This component ensures constant belt tension and prevents slippage in the fan drive line, maintaining optimal engine temperature during heavy-duty operation. Equivalent to OE Mercedes-Benz 4572003070S.
| EAN Code | 8699031092607 |
|---|
Ready to Order
Compatible OEM Codes
-
MERCEDES BENZ
- 457 200 30 70S
Description
What does a fan tension roller do?
A fan tension roller is a critical drive component that maintains constant tension on the fan belt within a heavy commercial vehicle's cooling system. It sits at the front of the engine, positioned between the crankshaft pulley and the fan pulley, to ensure the belt runs smoothly without slipping. By compensating for belt elongation over time, this component helps dampen vibrations and preserves the correct wrap angle for efficient heat dissipation.Vehicle compatibility and engine fitment
This specific part is designed for use in Mercedes-Benz vehicles. Because different engine architectures and belt layouts can require specific roller types, such as spring-loaded automatic or fixed-adjustment models, it is essential to verify compatibility based on the engine code and technical dimensions. This part is also fitted to Mercedes-Benz trucks.Installation and maintenance guidance
For proper installation, technicians should verify the pulley diameter, width, and profile type to match the existing belt. When replacing a worn roller, it is recommended to inspect the belt and other pulleys in the drive line. Maintaining correct mounting torque as specified by service manuals ensures long-term stability of the cooling system components.Troubleshooting cooling system noise
Monitoring for symptoms such as humming noises, belt slip, or rising engine temperatures can help identify a failing tensioner before it leads to more significant cooling system failures.OE cross-reference
332.01.0008 (Fan Tension Roller Fan) is the equivalent of the Mercedes-Benz OE number. This part directly replaces Mercedes-Benz OE number 4572003070S.Other OEMs
MERCEDES BENZ
- A4572003070
- A04572003070S
- 4572003070
- 457.200.3070
- 457.200.30.70S
- 457.200.30.70
- 457 200 3070
- 457 200 30 70S
Compatible Vehicles
| Brand | Model | Model Type | Engine |
|---|---|---|---|
| MERCEDES BENZ |
FAQ
What are the symptoms of a failing fan tension roller?
Common signs include increased humming or squealing noises from the front of the engine, visible belt slip, or rising engine operating temperatures due to inconsistent belt tension.
How do I ensure this roller fits my Mercedes-Benz engine?
Selection should be based on the specific engine code and physical dimensions such as pulley diameter and profile type. Always verify against the OE reference number found on the removed part.
Can I use a fixed-adjustment roller if my system is spring-loaded?
No, you must preserve the original system architecture. Replacing an automatic spring-loaded tensioner with a fixed one will prevent the system from compensating for belt elongation.
Why is belt tension important for engine temperature?
The fan drive is primary for dissipating heat through the radiator. If the roller fails to maintain steady tension, the belt slips, reducing fan speed and causing overheating.
What are the OE reference numbers of this part?
332.01.0008 directly replaces Mercedes-Benz OE number 4572003070S.