11521706499 Viscous Fan Clutch Assembly for BMW
Product: Viscous Fan Clutch Assembly
Primary OE: 11521706499
Item code: BM01012-004
Cross-reference numbers:
11521719046
11521719269
11521740963
11521737439
11527505302
11521740693
11521709499
Brand: BMW
Function: Controls fan engagement to support radiator airflow at low road speed.
Supply: Suitable for distributor trials and customer-specific packing discussion.
Fitment check: Check drive connection, pilot diameter, bolt circle and overall height.
Quality note: Order records can include product images, item labels and packing confirmation.
11521706499 Viscous Fan Clutch Assembly for BMW
For replacement-parts procurement, 11521706499 is the principal comparison number for this BMW fan clutch. SKU BM01012-004 helps avoid confusion with visually similar hubs.
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.
Product Technical Specifications
| Component | Viscous fan clutch assembly |
|---|---|
| Primary OE reference | 11521706499 |
| Cross-reference numbers | 11521719046; 11521719269; 11521740963; 11521737439; 11527505302; 11521740693; 11521709499 |
| Vehicle brand | BMW |
| Model reference | Model not confirmed; verify by OE, engine and original unit |
| Yongshang Auto SKU | BM01012-004 |
| Supply position | Aftermarket wholesale replacement |
Temperature-Responsive Fan Engagement
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.
Cooling complaints should not be assigned to the clutch alone. Restricted radiator fins, a damaged shroud, thermostat faults, belt problems and low coolant can produce similar symptoms.
Buyer Matching Guide
For BMW, compare 11521706499, engine option, water-pump connection and shroud clearance. The fan must remain centered with adequate space throughout rotation.
- 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.
Packing and QC Notes
Sampling inspection helps confirm visible configuration and dimensional consistency before a batch is released for dispatch.
Ordering Specification Notes
Procurement documentation for BMW can combine 11521706499, BM01012-004, cross-references, critical dimensions and inspection criteria. This makes sample comparison more practical and supports repeat-order consistency even when several fan-clutch versions share a similar housing.
Wholesale and Procurement Information
A sample of 11521706499 / BM01012-004 can be reviewed before volume purchasing, subject to availability. State the dimensions and inspection evidence required.
Frequently Asked Questions
Is 11521706499 suitable for every BMW version?
Not automatically. Engine, production period and water-pump or fan configuration can change the required clutch.
Which measurements are most important?
Check total height, drive-side connection, pilot diameter, fan bolt circle, fan-side offset and rotation direction.
Should the fan blade be inspected too?
Yes. Cracks, deformation, loose holes or imbalance can overload the new clutch and create a safety hazard.
Are pre-shipment photos available for BM01012-004?
They can be discussed for sample or bulk orders, including mounting faces, profile, labels and packing.
Can private-label cartons be supplied?
Neutral or customer-specific packaging can be evaluated according to quantity, artwork and schedule.
Request a 11521706499 Fan Clutch Quote
Contact Yongshang Auto with 11521706499, BM01012-004, quantity and destination country for a fitment review and wholesale proposal for BMW.
Fitment notice: OE and model references support identification but do not replace engine-specific catalogue checks or comparison with the original fan clutch.
