The Wacker Neuson Reducing Piece is a genuine OEM component designed for the RD18-80, RD18-100, and RD18-100 C series tandem rollers. Sourced directly from Wacker Neuson, this part meets the same specifications as the original fitted at the factory, ensuring a direct, accurate replacement with no guesswork. It is compatible across a wide range of RD18 variants — including US and SE market configurations as well as the updated.3 sub-series — making it a versatile stock item for fleets running multiple RD18 machines. When it comes time to service your roller, part number is the correct OEM choice to restore proper function and keep your compaction equipment working as intended.
Key Features
- Genuine OEM Dimensional Accuracy — Manufactured to Wacker Neuson's original specifications, this reducing piece maintains the correct bore-to-bore transition tolerances critical for proper fluid or mechanical flow within the machine.
- Direct Drop-In Replacement — Matches the original mounting configuration of the RD18 series, fitting into the existing assembly without rework or adaptation to surrounding components.
- Broad RD18 Series Coverage — Compatible with RD18-80, RD18-100, and RD18-100 C variants across standard, US, SE, and .3 sub-series configurations — one part number across your RD18 fleet.
- Restores Correct Flow Path — A worn or damaged reducing piece can disrupt the transition between differently sized passages, leading to pressure loss or system inefficiency; replacing it with 5100012720 restores the intended flow characteristics.
- OEM Traceability — As a genuine Wacker Neuson part, 5100012720 carries full OEM part traceability, supporting accurate service records and parts documentation for your equipment.
A reducing piece serves as a transition fitting between two passages or connections of different sizes within the machine's system — whether hydraulic, fluid, or mechanical. Its role is to maintain a controlled, leak-free connection across the size change, ensuring that pressure and flow behave as the system was designed to handle. When a reducing piece cracks, corrodes, or seats incorrectly, the result is typically a loss of system pressure, fluid leaks, or component wear in adjacent parts — making timely replacement with a correctly specified part essential to keeping the machine operating at full capacity.
Part Details
| Part Number | 5100012720 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Reducing Piece |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD18-80 Tandem Roller | RD18-80 | 5100011382, 5100047360, 5100055774 |
| RD18-100 Tandem Roller | RD18-100 | 5100011383, 5100047361, 5100055775 |
| RD18-100 C Tandem Roller | RD18-100 C | 5100011384 |
| RD18-80 Tandem Roller | RD18-80 US | 5100027572 |
| RD18-100 Tandem Roller | RD18-100 US | 5100027573 |
| RD18-100 C Tandem Roller | RD18-100 C US | 5100027574 |
| Vibration Roller | RD18-80 SE | 5100044988 |
| Vibration Roller | RD18-100 SE | 5100044989 |
| RD 18-100 C | RD18-100c | 5100047362, 5100055776 |
| Vibration Roller | RD18-100c 3 | 5100047363 |
| RD18-80.3 | RD18-80.3 | 5100055946 |
| RD18 | RD18-100.3 | 5100055947 |
| RD18-100c.3 | RD18-100c.3 | 5100055948 |
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.
