The Multiquip 21918 Finisher Engine Mount Spacer is a genuine OEM component designed for J36 and M30 series walk-behind power trowels. As an authentic Multiquip OEM part, 21918 is manufactured to the exact tolerances required by the original engine mount assembly, ensuring the engine sits at the correct position and orientation on the trowel frame. This spacer is confirmed to fit J36R60, J36R90H, J36H90, M30H55, J36H55, J36H90H, and J36R90 models. Sourced directly through authorized Multiquip distribution, DHS Equipment supplies this part ready for immediate installation.
Key Features
- Exact OEM Geometry — Manufactured to original Multiquip engineering drawings, maintaining the precise stack height and bolt-pattern alignment critical to engine mount integrity on walk-behind trowels.
- Direct Bolt-In Installation — Matches the original mounting hole spacing and thickness of the factory spacer, dropping straight into place without rework or shimming.
- Broad J36 and M30 Series Coverage — Fits J36R60, J36R90, J36R90H, J36H55, J36H90, J36H90H, and M30H55 walk-behind power trowels in a single part number.
- Engine Stability Under Load — A correctly fitted engine mount spacer keeps the power unit firmly located during blade rotation, preventing vibration-induced loosening that can accelerate wear on mounts, belts, and clutch components.
- Genuine OEM Traceability — Supplied as a genuine Multiquip part, ensuring the material grade and dimensional spec match what left the factory originally.
The engine mount spacer on a walk-behind power trowel is a precisely dimensioned component that sits between the engine baseplate and the trowel frame, setting the correct vertical and lateral position of the engine relative to the drivetrain. Getting this height and alignment right is essential — if the spacer is missing, damaged, or substituted with an incorrect thickness, the engine can shift under the cyclic loads generated during finishing, placing stress on the clutch, drive belt, and mounting hardware. Over time, an improperly supported engine accelerates wear across multiple connected components and can lead to vibration, noise, and premature failure of the mount assembly itself.
Part Details
| Part Number | 21918 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Finisher Engine Mount Spacer |
Compatibility & Fitment
| Name | Model |
|---|---|
| Power Trowels | J36R60 |
| Power Trowels | J36R90H |
| Power Trowels | J36H90 |
| Walk-Behind Trowels | M30H55 |
| Power Trowels | J36H55 |
| Power Trowels | J36H90H |
| Power Trowels | J36R90 |
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.
