8K0520521B Radiator Fan Control Module for AUDI A4 B8
Part Type: Radiator Fan Control Module
Internal Product No.: 6604029
Main OE Reference: 8K0520521B
Catalogue Fitment: AUDI A4 B8 (2007-2016) | AUDI A5 (2007-2017) | AUDI Q5 (2008-2017)
Configuration: Supplied in the photographed product configuration
Selection Features: Confirm OE number, connector count, pin layout, housing shape, mounting points and any visible suffix on the original module before ordering.
Pre-Shipment Check: Connector integrity, external mounting geometry and visible component condition are reviewed for wholesale shipment.
MOQ: From 5 pieces
Packaging: Neutral or customized packaging available
Typical Delivery: 30–45 days, subject to quantity and destination
Fitment Check: Cross-reference numbers support sourcing, but final selection must follow the exact electronic and mechanical interface.
Radiator Fan Control Module for AUDI A4 B8 (2007-2016) | AUDI A5 (2007-2017) | AUDI Q5 (2008-2017)
The listed Radiator Fan Control Module supports aftermarket repair or sourcing programs where technical details are compared before the order is approved.
Product Identification
- Component: Radiator Fan Control Module
- Primary OE: 8K0520521B
- Cross references: No additional confirmed cross-reference is listed.
- Application: AUDI A4 B8 (2007-2016) | AUDI A5 (2007-2017) | AUDI Q5 (2008-2017)
- YoonShan product no.: 6604029
- Configuration: Match the product photographs on this page
Fitment and Ordering Checks
Use the complete part label and clear front, rear and connector photographs because similar housings may contain different electronics.
Do not match only by plug shape; part-number suffixes and vehicle control architecture can determine compatibility.
System Function and Diagnosis
As an application-specific electronic unit, it should be identified by OE reference, housing, connector and pin layout rather than appearance alone.
Use approved diagnostic equipment to check command signals and circuit voltage rather than bypassing protective controls.
Confirm the fan motor is not seized or drawing abnormal current before commissioning a replacement module.
Inspection and Installation
The electronic unit is visually inspected for configuration consistency and protected around terminals and heat-sink surfaces.
Mount the module in the intended location with its original heat-management and weather-protection arrangement.
Product Technical Specifications
| Product type | Radiator Fan Control Module |
|---|---|
| Primary OE reference | 8K0520521B |
| Cross-reference numbers | No additional confirmed cross-reference |
| Internal item code | 6604029 |
| Vehicle brand | AUDI |
| Vehicle model | A4 B8 |
| Model year | 2007–2052 |
| Installation position | Vehicle cooling-fan control circuit / specified mounting location |
| Product function | Controls or switches cooling-fan operation within the compatible vehicle electrical system |
Wholesale Supply Information
China-based export support is available for trial quantities, scheduled orders and consolidated cooling-parts enquiries.
A 12-month warranty applies under agreed supply terms, with packaging and dispatch details stated before the order proceeds.
Buyer Questions
What is checked before shipment?
Reference, connector, pins, casing and visible mounting condition are reviewed before packing.
Why should the fan motor be tested first?
A seized or high-current motor can overload the control circuit and damage replacement electronics.
How do I confirm the correct control module?
Match the complete OE number, suffix, connector, pins, housing and vehicle application with the original unit.
What should I provide for a quotation?
Send OE number, module label photos, vehicle details, quantity and destination.
Request a Quote: Contact YoonShan with the confirmed reference and configuration for global B2B supply support.
