The Wacker Neuson is a genuine OEM Piston Standard designed for the RD12A-90 Tandem Roller series, RD11A and RD11AEC Hydrostatic Double Drum Vibratory Rollers, the BFS 2020AS Floor Saw, and the GS12Ai Portable Generator. As a factory-sourced component, the is manufactured to the exact tolerances required by the original engine or hydraulic assembly — no guesswork on fitment or dimensional compatibility. This piston is the standard (STD) bore specification, making it the correct choice for engines that are being rebuilt to original cylinder bore dimensions rather than an oversize grind.
Key Features
- Factory-Correct Bore Tolerance — Manufactured to OEM bore dimensions, ensuring the ring seal and compression characteristics match the original engine specification exactly.
- Genuine OEM Sourcing — Supplied directly from Wacker Neuson's parts network, so you receive the same component installed at the factory — not an approximation of it.
- Standard (STD) Specification — Correct for engines being rebuilt to the original cylinder bore size; confirm bore measurements before ordering to ensure STD is the appropriate spec for your application.
- Broad Model Coverage — Fits the RD12A-90 Tandem Roller (including Foldable ROPS variants), RD11A and RD11AEC Hydrostatic Double Drum Rollers, BFS 2020AS Floor Saw, and GS12Ai Generator.
- Compression and Power Restoration — A worn or damaged piston causes loss of compression, rough running, excessive oil consumption, and reduced output power; replacing it with the correct OEM piston restores the engine to proper operating performance.
The piston is a core reciprocating component inside the engine cylinder, converting the energy from combustion into mechanical force that drives the crankshaft. It works in close cooperation with the piston rings and cylinder wall to maintain compression and seal combustion gases away from the crankcase. When a piston wears, cracks, or scores, compression drops, oil consumption rises, and the engine loses power or becomes difficult to start — making timely replacement critical to keeping the host machine operational and productive.
Part Details
| Part Number | 5000152561 |
|---|---|
| Old Part Number | 0152561 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Piston Standard |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD12A-90 Tandem Roller | RD12A-90 | 5000620058, 5000620320, 5000620369 |
| BFS 2020AS SAW | BFS 2020AS | 5000620086 |
| Hydrostatic Double Drum Vibrat ory Roller | RD11AEC | 5000007695 |
| Hydrostatic Double Drum Vibrat ory Roller | RD11A | 5000007693 |
| 50Hz Portable Generator 12 kVA | GS12Ai | 5000009108 |
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.
