058121347 Viscous Fan Clutch Assembly for AUDI A4 B5
Product: Viscous Fan Clutch Assembly
Primary OE: 058121347
Item code: AD01012-008
Cross-reference numbers:
058121350B
06B121347
Brand: AUDI
Model: A4 B5
Function: Engages the cooling fan progressively when additional airflow is required.
Supply: Offered for export replacement-parts and wholesale distribution projects.
Fitment check: Match the removed unit, mounting geometry, fan offset and shroud clearance.
Quality note: Both mounting faces and the side profile can be checked before dispatch.
058121347 Viscous Fan Clutch Assembly for AUDI A4 B5
Primary reference 058121347 is the starting point for matching this AUDI A4 B5 fan clutch assembly. Buyers should include AD01012-008 in dimensional, sample and volume enquiries.
By varying the amount of torque delivered to the fan, the viscous coupling supports stable coolant temperature during idling, towing, climbing and hot-weather operation.
Product Technical Specifications
| Component | Viscous fan clutch assembly |
|---|---|
| Primary OE reference | 058121347 |
| Cross-reference numbers | 058121350B; 06B121347 |
| Vehicle brand | AUDI |
| Model reference | A4 B5 |
| Yongshang Auto SKU | AD01012-008 |
| Supply position | Aftermarket wholesale replacement |
Thermal Fan-Drive Function
Inside the clutch, calibrated fluid shear links the input hub to the fan mounting section. The thermal control reacts to hot air leaving the radiator so fan assistance increases during demanding conditions.
A clutch that remains fully engaged may create excessive noise and drag, while insufficient engagement can reduce radiator airflow at low speed. Verify coolant, radiator and shroud condition as well.
Compatibility Review Before Ordering
Before purchase, verify 058121347 on the removed AUDI A4 B5 unit or in a trusted catalogue. Compare every stud, bolt circle, thread and locating feature.
- Confirm the OE number and usable cross-references.
- Match vehicle model, engine, chassis and production period.
- Check drive-side thread or flange and rotation direction.
- Measure hub height, pilot diameter and fan bolt circle.
- Verify blade alignment and clearance inside the shroud.
Installation and Cooling-System Checks
Installation should be completed by a qualified technician. Follow the specified thread direction and torque procedure, inspect the fan and water-pump bearing, replace damaged hardware, and confirm that the blade rotates freely without contacting the radiator or shroud. Test the vehicle under the appropriate warm operating conditions after assembly.
Inspection and Export Preparation
Inspection can focus on clean mounting interfaces, protected threads, consistent housing condition and packing suited to international handling.
Ordering Specification Notes
For controlled sourcing of AUDI A4 B5, place OE 058121347, SKU AD01012-008, dimensions, rotation information and packaging instructions on one specification sheet. Include close views of the drive connection and fan mounting face so visually similar but incompatible versions can be separated early.
Wholesale and Procurement Information
Yongshang Auto can evaluate trial and repeat demand for 058121347. Reference AD01012-008 and specify any pre-shipment photo or packaging requirement.
Frequently Asked Questions
What should match between 058121347 and the removed clutch?
The drive connection, fan bolt pattern, hub depth, pilot diameter, rotation and overall clearance should correspond.
Can over-engagement reduce efficiency?
A clutch that remains heavily engaged may increase noise and parasitic drag, so the system should be diagnosed correctly.
Why inspect the radiator and shroud?
Restricted airflow or missing air guides can reduce cooling even when the fan clutch itself is working.
Can dimensions be confirmed before ordering AD01012-008?
Buyers may request specific dimensional checks; state the measurement points and acceptable values in the enquiry.
Are bulk and repeat orders supported?
Yes. Quote the SKU, required quantity and previously agreed packing or QC conditions for review.
Request a 058121347 Fan Clutch Quote
Contact Yongshang Auto with 058121347, AD01012-008, quantity and destination country for a fitment review and wholesale proposal for AUDI A4 B5.
Fitment notice: OE and model references support identification but do not replace engine-specific catalogue checks or comparison with the original fan clutch.
