The Husqvarna 506109621 Coupler 3/8 Female FF BSP is a genuine OEM hydraulic fitting designed for the K3600 and K2500 power cutters. This coupler provides the secure, leak-free hydraulic connection required to keep cutting operations running at full capacity. Cross-reference part number 506109621 against your machine's parts diagram to confirm fitment before ordering. DHS Equipment supplies this part to help keep your equipment performing at its best.
Key Features
- OEM-Spec Hydraulic Sealing — manufactured to Husqvarna's exact tolerances for thread form and sealing surface, ensuring a pressure-tight BSP connection without fluid bypass or weepage.
- 3/8 Female FF BSP Thread Form — the female flat-face BSP configuration mates directly with the corresponding male port on the K3600 and K2500 hydraulic circuit, requiring no thread adapters or modifications.
- K3600 and K2500 Power Cutter Compatibility — engineered specifically for these Husqvarna power cutters, eliminating guesswork and ensuring the connection meets the hydraulic pressure demands of the machine.
- Sustained Hydraulic Pressure Integrity — a correctly seated coupler maintains the hydraulic flow and pressure the cutting head depends on; a failed or mismatched fitting causes pressure loss, reduced blade performance, and potential fluid contamination.
- Genuine Husqvarna OEM Part — sourced directly from Husqvarna's construction equipment parts program, carrying the same material and dimensional specifications as the original component installed at the factory.
A hydraulic coupler is the quick-connect or threaded fitting that joins two sections of a hydraulic circuit, allowing pressurized fluid to flow between the power source and the working component — in this case, the cutting mechanism of the power cutter. The BSP (British Standard Pipe) female flat-face thread profile on this coupler provides a metal-to-metal seating surface that minimizes leak paths even under sustained hydraulic pressure. When a coupler wears, cracks, or is cross-threaded, the result is hydraulic fluid loss, a drop in system pressure, and degraded cutting performance — making prompt replacement with the correct OEM fitting essential.
Part Details
| Part Number | 506109621 |
|---|---|
| Brand | Husqvarna |
| Part Type | Genuine OEM |
| Description | Coupler 3/8 Female FF BSP |
Compatibility & Fitment
| Name | Model |
|---|---|
| Power Cutter | K3600 |
| Power Cutter | K2500 |
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.
