The Wacker Neuson Upper Mass is a genuine OEM Upper Mass designed for the DPU80 and DPU90 series reversible vibratory plates, including the DPU80Lec770, DPU80Lec670, DPU90Lec670, DPU90Lec770, DPU80Lem770, DPU80Lem670, DPU90Lem770, and related US-market variants. As a direct Wacker Neuson OEM component, part is manufactured to the same specifications as the original, ensuring a correct installation without guesswork or adaptation. This Upper Mass is a structural and dynamic-critical component, making an exact OEM replacement the right call for contractors who depend on consistent compaction output. Confirm your model number against the fitment list before ordering to ensure this is the right part for your machine.
Key Features
- Genuine OEM Mass Geometry — Manufactured to exact Wacker Neuson specifications, preserving the precise weight distribution and structural integrity required for consistent compaction force.
- Direct Bolt-On Replacement — Engineered to mount directly to the exciter housing and isolation system of compatible DPU80 and DPU90 series plates with no modification to mounting points.
- Broad DPU80/DPU90 Series Fitment — Compatible with multiple Lec and Lem configurations across the DPU80 and DPU90 platform, including US-market variants and the DPU 80/110 KMAT series.
- Restores Full Compaction Output — A worn or damaged Upper Mass disrupts the vibratory dynamics of the plate, reducing compaction efficiency; replacing it with an OEM-spec component restores rated performance.
- Structural Durability — Built from materials matched to the original design to handle the continuous high-frequency vibration loads generated during compaction operations.
The Upper Mass is one of the two primary oscillating assemblies in a reversible vibratory plate compactor. Working in conjunction with the Lower Mass and the exciter unit, it generates the directed vibration force that drives compaction into the substrate below. The phase relationship between the Upper Mass and Lower Mass determines both the direction and magnitude of the compaction force — which is how reversible plates achieve forward and reverse travel. When the Upper Mass is cracked, deformed, or otherwise out of spec, the machine loses its ability to produce consistent, directed vibration, resulting in uneven compaction, increased operator fatigue from erratic plate behavior, and potential damage to surrounding drivetrain components.
Part Details
| Part Number | 5100004992 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Upper Mass |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| DPU80Lec770 | DPU80Lec770 | 5100026787 |
| DPU80Lec670 | DPU80Lec670 | 5100027032 |
| DPU90Lec670 | DPU90Lec670 | 5100027534 |
| DPU90Lec770 | DPU90Lec770 | 5100027536 |
| DPU80Lem770 | DPU80Lem770 | 5100018444 |
| DPU80Lem670 | DPU80Lem670 | 5100024695 |
| DPU90Lem770 | DPU90Lem770 | 5100024731 |
| DPU90Lec770 US | DPU90Lec770 US | 5100028357 |
| DPU90Lem770 US | DPU90Lem770 US | 5100024732 |
| Vibration Plate DPU 80-110(r) KMAT | DPU 80/110 KMAT | 5100016604 |
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.
