The Husqvarna 505859902 Kit Pump Idler Arm is a genuine OEM assembly designed for the X4000 early entry saw. This kit delivers the correct geometry and tensioning components to restore proper pump drive engagement on the X4000. As a factory-sourced assembly, every component in this kit meets Husqvarna's original design specifications, ensuring a consistent, reliable repair. DHS Equipment supplies this part to help keep your early entry saw performing at full capacity.
Key Features
- Genuine OEM Assembly — Sourced directly from Husqvarna, this kit includes components manufactured to the original tensioning and geometry specifications required for correct pump drive function on the X4000.
- Complete Kit Format — Supplied as a ready-to-install assembly, this kit includes the idler arm components needed for a full repair rather than piecemeal sourcing of individual parts.
- X4000 Early Entry Saw Fitment — Engineered specifically for the X4000 early entry saw, confirming direct compatibility with this machine's pump drive system.
- Restored Pump Drive Engagement — A worn or damaged idler arm causes belt slip and inconsistent pump operation; this kit restores correct belt tension and smooth, uninterrupted pump drive.
- Cross-Reference Confidence — Cross-reference 505859902 against your X4000 parts diagram to confirm placement before installation, ensuring the right component goes in the right location.
The pump idler arm maintains proper tension on the belt that drives the water pump in an early entry saw. Without correct tension, the belt slips or runs unevenly, reducing water flow to the blade and compromising both cut quality and blade cooling. When the idler arm wears, bends, or fails, pump output drops noticeably — making prompt replacement essential to protecting both the blade and the concrete surface being cut.
Part Details
| Part Number | 505859902 |
|---|---|
| Brand | Husqvarna |
| Part Type | Genuine OEM |
| Description | Kit Pump Idler Arm |
Compatibility & Fitment
| Name | Model |
|---|---|
| Early Entry Saw | X4000 |
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.
