11521723829 Viscous Fan Clutch Assembly for BMW 3 Series
Product: Viscous Fan Clutch Assembly
Primary OE: 11521723829
Item code: BM01012-005
Cross-reference numbers:
11527502804
1151723830
1152712481
11521723439
11521723830
11521737489
11521741028
11521741744
11521745134
1152745268
Brand: BMW
Model: 3 Series
Function: Uses viscous coupling action to balance cooling airflow and engine drag.
Supply: Supports sample, batch and recurring cooling-system requirements.
Fitment check: Confirm model, engine, production period and both mounting interfaces.
Quality note: Visible housing, flange and thread condition may be included in the QC scope.
11521723829 Viscous Fan Clutch Assembly for BMW 3 Series
This listing covers the 11521723829 viscous fan clutch assembly referenced for BMW 3 Series. Yongshang Auto records it as BM01012-005 for fitment review, quotation and export traceability.
Cooling performance depends on both airflow and mechanical integrity. The clutch bearing, input connection, fan bolt pattern and thermal valve must suit the original system.
Product Technical Specifications
| Component | Viscous fan clutch assembly |
|---|---|
| Primary OE reference | 11521723829 |
| Cross-reference numbers | 11527502804; 1151723830; 1152712481; 11521723439; 11521723830; 11521737489; 11521741028; 11521741744; 11521745134; 1152745268 |
| Vehicle brand | BMW |
| Model reference | 3 Series |
| Yongshang Auto SKU | BM01012-005 |
| Supply position | Aftermarket wholesale replacement |
Thermal Fan-Drive Function
This assembly helps balance low-speed cooling airflow and engine efficiency. A sound bearing, correct hub offset and properly calibrated viscous action are all important to reliable operation.
Bearing play, visible leakage, delayed temperature control or unusual fan speed justify inspection of the clutch, blade, water-pump hub and surrounding clearances.
Compatibility Review Before Ordering
Cross-check 11521723829, the BMW 3 Series production period and the fan-blade interface. Do not force a mismatched hub or reuse damaged mounting hardware.
- 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
Order checks can include part-number traceability, obvious handling damage, thread or flange condition and secure carton protection.
Ordering Specification Notes
Before listing 11521723829 / BM01012-005 for BMW 3 Series, retain measurements of the removed clutch and note the applicable engine or chassis. A structured record improves catalogue accuracy, incoming inspection and technical communication with distributors and repair customers.
Wholesale and Procurement Information
To review supply for 11521723829, submit BM01012-005 with the engine application, expected quantity and acceptance criteria. This keeps technical and commercial details connected.
Frequently Asked Questions
Why can a worn 11521723829 clutch affect cooling?
Insufficient engagement may reduce fan airflow at low vehicle speed, especially under high thermal load.
Does constant fan noise always mean clutch failure?
No. Diagnosis should also consider engine temperature, shroud condition, belt drive and the vehicle’s normal control strategy.
Is professional installation recommended?
Yes. The technician should follow the correct thread direction, torque procedure and fan-clearance checks.
Can SKU BM01012-005 be included in a mixed order?
Yes. List each SKU, OE number and quantity separately so labels and inspection records remain traceable.
What should an importer include in an enquiry?
Send the engine application, required volume, destination, original-part photos and commercial packing requirements.
Request a 11521723829 Fan Clutch Quote
Contact Yongshang Auto with 11521723829, BM01012-005, quantity and destination country for a fitment review and wholesale proposal for BMW 3 Series.
Fitment notice: OE and model references support identification but do not replace engine-specific catalogue checks or comparison with the original fan clutch.
