The Husqvarna 740430900 O-Ring is a genuine OEM sealing component designed for a wide range of Husqvarna Construction power packs, wall saws, and core drill motors, including the PP440HF, PP480HF, PP492, WS440HF, WS462, WS482HF, WS482, and DM406. As a direct OEM replacement, this O-Ring is manufactured to Husqvarna's exact material and dimensional specifications, ensuring a secure hydraulic or fluid seal wherever it is installed. Cross-reference part number 740430900 against your machine's parts diagram to confirm the correct position before ordering. DHS Equipment supplies this part to help keep your equipment running at full capacity.
Key Features
- OEM Elastomer Specification — manufactured from the same compound and to the same compression and durometer ratings as the original, ensuring proper sealing contact across hydraulic and fluid circuits
- Exact-Dimension Replacement — matches the original cross-section and inner diameter exactly, so this O-Ring seats correctly in its groove without trimming, stretching, or shimming
- Broad Husqvarna Fitment — compatible with PP440HF, PP440, PP480HF, PP480, PP492 power packs, WS440HF, WS440, WS442, WS460, WS462, WS463, WS482HF, and WS482 wall saws, and the DM406 concrete core drill
- Leak Prevention — a correctly seated O-Ring maintains system pressure in hydraulic circuits; a worn or damaged O-Ring allows fluid bypass, causing pressure loss, overheating, and accelerated wear on downstream components
- Hydraulic System Integrity — replacing a failed seal promptly with a genuine OEM component preserves rated output pressure in power packs and consistent feed force in wall saws and drill motors
An O-Ring forms a radial or face seal between two mating components, compressing under assembly load to prevent hydraulic fluid or coolant from bypassing a joint. In Husqvarna power packs, wall saws, and core drill motors, these seals are critical to maintaining rated hydraulic pressure throughout the system. When an O-Ring degrades — through heat cycling, chemical exposure, or mechanical wear — it loses its compression set, allowing fluid to leak past the joint, dropping system pressure and potentially introducing contamination into precision hydraulic components.
Part Details
| Part Number | 740430900 |
|---|---|
| Brand | Husqvarna |
| Part Type | Genuine OEM |
| Description | O-Ring |
Compatibility & Fitment
| Name | Model |
|---|---|
| Power Pack | PP440HF |
| Power Pack | PP440 |
| Power Pack | PP492 |
| Power Pack | PP480HF |
| Concrete Core Drill | DM406 |
| Wall Saw | WS440HF |
| Wall Saw | WS462 |
| Wall Saw | WS482HF |
| Wall Saw | WS460 |
| Wall Saw | WS463 |
| Power Pack | PP480 |
| Wall Saw | WS482 |
| Wall Saw | WS442 |
| Wall Saw | WS440 |
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.
