The Multiquip 42640 Adaptor M18-1.5 Female to 5/8 Barb is a genuine OEM fitting designed for STX6H and PRX series ride-on power trowels. As a direct Multiquip OEM part, 42640 is manufactured to the same specifications as the original component, ensuring a correct connection between M18-1.5 female threaded ports and 5/8-inch barb fittings on your machine. This adaptor is a confirmed fitment for the STX6H hydrostatic ride-on trowel and PRX hybrid power float, making it a straightforward service replacement when the original fitting is damaged, corroded, or lost during maintenance.
Key Features
- Genuine OEM Thread Integrity — Manufactured to Multiquip OEM specification, ensuring correct M18-1.5 thread engagement with no risk of cross-threading or fluid leaks at the connection point.
- Direct Barb-to-Thread Connection — Converts an M18-1.5 female port to a 5/8-inch barb outlet, allowing hose lines to seat and seal securely without adapters or improvised fittings.
- Confirmed Fitment for STX6H and PRX — Verified for use on the STX6H hydrostatic ride-on trowel and PRX hybrid power float series, eliminating guesswork during parts sourcing.
- Prevents Fluid Loss and System Pressure Drop — A failed or missing adaptor can result in fluid leaks and loss of hydraulic or coolant system pressure, directly affecting trowel blade control and machine performance.
- Essential Service Item — Commonly needed during fluid system servicing or hose replacement; stocking this part keeps scheduled maintenance on schedule.
The Multiquip 42640 is a threaded-to-barb adaptor that bridges an M18-1.5 female port and a 5/8-inch hose barb fitting within the fluid system of the trowel. Adaptors like this one create a leak-free transition point between rigid threaded connections and flexible hose lines, maintaining proper fluid flow and system pressure. When this fitting is damaged or absent, fluid can escape the system, leading to pressure loss, potential overheating, and impaired hydraulic or cooling function on the machine.
Part Details
| Part Number | 42640 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Adaptor M18-1.5 Female to 5/8 Barb |
Compatibility & Fitment
| Name | Model |
|---|---|
| Whiteman Ride-On Power Trowels | STX6H |
| Ride-On Power Float | PRX |
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.
