8K0520521B Radiator Fan Control Module for AUDI A4 B8

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)

AutoParts 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 AutoParts with the confirmed reference and configuration for global B2B supply support.

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.