The Multiquip 820623 is a genuine OEM Cylinder Head Screw 9MM 1" Fine Thread designed for the HHN31V Whiteman ride-on mechanical power trowel. As a direct Multiquip OEM part, 820623 is manufactured to the same specification as the original hardware, ensuring correct thread engagement and proper torque retention in the cylinder head application. This fastener is a direct replacement for the HHN31V, making it the straightforward choice when servicing the drivetrain or engine assembly on this machine.
Key Features
- OEM Thread Specification: — Cut to a 9MM 1" fine thread pitch, matching the original fastener exactly so threads seat cleanly without cross-threading or over-tightening risk.
- Genuine Multiquip Hardware: — Sourced directly from Multiquip, this screw meets the material grade and tensile strength required for cylinder head applications on power trowel engines.
- Direct Fit for HHN31V: — Confirmed fitment for the Whiteman HHN31V 8-foot heavy-duty ride-on mechanical trowel; installs in place of the original without modification.
- Correct Clamping Force: — Proper thread form and shank dimensions ensure the cylinder head maintains the designed clamping load, preventing gasket failure and compression loss.
- Torque-Critical Safety Component: — Cylinder head fasteners are safety-relevant hardware; using the correct OEM specification screw is essential to maintaining a properly sealed and structurally sound engine assembly.
A cylinder head screw secures the cylinder head to the engine block, maintaining the compression seal between the head gasket and both mating surfaces. When a cylinder head screw is loose, stripped, or replaced with an incorrect fastener, the head gasket can fail, leading to compression loss, coolant or oil leaks, and potential engine damage. Using the correct fine-thread specification fastener — like the Multiquip 820623 — ensures the cylinder head is held at the proper clamp load throughout the engine's operating cycles, protecting both engine performance and longevity on the HHN31V trowel.
Part Details
| Part Number | 820623 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Cylinder Head Screw 9MM 1" Fine Thread |
Compatibility & Fitment
| Name | Model |
|---|---|
| Whiteman Ride-On Power Trowels | HHN31V |
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.
