The Multiquip 508428C is a genuine OEM Copper Washer 5/8" designed for the AR13H series ride-on asphalt rollers, including the AR13HC, AR13HA, AR13HAR, AR13D, and AR13H models. As a direct OEM replacement, this washer matches the exact material grade and dimensional spec of the original hardware installed at the factory. Sourced directly through authorized Multiquip distribution channels, the 508428C ensures a correct, trouble-free installation with no guesswork on compatibility.
Key Features
- Genuine OEM Copper Material: — Soft-annealed copper construction delivers the correct compression and sealing characteristics required for hydraulic and fluid-side fastening applications on the AR13H series.
- Direct Drop-In Replacement: — Machined to the original 5/8" specification, this washer seats and torques correctly against mating surfaces without any rework or shimming.
- Broad AR13H Series Fitment: — Confirmed for AR13HC, AR13HA, AR13HAR, AR13D, and AR13H ride-on asphalt rollers, covering the full range of current AR13 platform variants.
- Leak Prevention at Fluid Connections: — A correctly installed copper washer creates a reliable crush seal at threaded fluid fittings; a worn or reused washer risks seepage that can lead to fluid loss and compaction performance degradation.
- Fuel and Hydraulic System Safety: — Used at fuel or hydraulic line connections, a properly seating copper washer is critical to preventing fluid leaks that could pose a fire or environmental hazard on active paving jobsites.
A copper washer serves as a crush-seal gasket at threaded fittings on fuel, hydraulic, or oil line connections. When a bolt or banjo fitting is torqued down, the soft copper deforms slightly to fill any microscopic surface irregularities between the mating faces, creating a leak-free seal. Over time and through repeated heat cycles, copper washers harden and lose their ability to re-seal effectively, making replacement during any service interval or fitting re-torque essential to maintaining a tight, dry connection.
Part Details
| Part Number | 508428C |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Copper Washer 5/8" |
Compatibility & Fitment
| Name | Model |
|---|---|
| Rollers | AR13HC |
| Rollers | AR13HA/HAR |
| Rollers | AR13D |
| Rollers | AR13H |
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.
