The Husqvarna 521938404 Fan Hub is a genuine OEM component designed for the FS4400 floor saw. This part is sourced directly through Husqvarna's authorized parts network, ensuring it meets the exact specifications of the original component installed at the factory. DHS Equipment supplies this part to help keep your floor saw operating at full capacity. Cross-reference part number 521938404 against your parts diagram to confirm fitment before ordering.
Key Features
- Genuine OEM Precision — manufactured to Husqvarna's exact dimensional and material specifications, ensuring the fan seats and rotates correctly without imbalance or wobble.
- Direct-Mount Replacement — engineered to match the original mounting interface on the FS4400, allowing straightforward installation without machining or adaptation.
- FS4400 Floor Saw Compatibility — purpose-built for the FS4400 walk-behind floor saw, so you can order with confidence knowing this hub is the right fit for your machine.
- Cooling System Integrity — a correctly functioning fan hub keeps the cooling fan spinning true, maintaining proper airflow to the engine and preventing heat-related performance loss during demanding concrete cutting operations.
- Structural Durability — constructed to withstand the vibration and mechanical loads inherent to floor saw operation, supporting long service intervals between component replacements.
The fan hub is the central mounting component that secures the cooling fan to the engine's drive shaft on the FS4400 floor saw. It transfers rotational force from the engine to the fan blades, maintaining consistent airflow across the engine to regulate operating temperature. When the fan hub becomes damaged, cracked, or worn, the fan can wobble, slip, or detach entirely — leading to reduced cooling efficiency and the risk of engine overheating during cutting.
For fitment questions or assistance confirming that part number this part is correct for your FS4400 configuration, contact DHS Equipment's product support team.
Part Details
| Part Number | 521938404 |
|---|---|
| Brand | Husqvarna |
| Part Type | Genuine OEM |
| Description | Fan Hub |
Compatibility & Fitment
| Name | Model |
|---|---|
| Floor Saw | FS4400 |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
