The Wacker Neuson Reducing Piece is a genuine OEM component designed for the RD18-100 C and RD18-100c series tandem rollers. As a direct factory replacement, this part is manufactured to the same specifications as the original, ensuring a correct fit within the hydraulic or fluid routing system of your machine. Sourced directly from Wacker Neuson's authorized parts network, the is the recommended replacement for all covered RD18-100 C and RD18-100c variants, including US-spec and.3 configurations.
Key Features
- OEM Dimensional Accuracy — Manufactured to exact thread pitch and bore diameter tolerances required for a reducing piece, ensuring leak-free seating and correct flow transition between differing line sizes.
- Direct Factory Replacement — Installs in the same position as the original without rework to surrounding fittings or ports, maintaining the integrity of the original fluid circuit.
- Broad RD18-100 Series Coverage — Confirmed fitment across RD18-100 C, RD18-100 C US, RD18-100c, RD18-100c.3, and related tandem roller configurations.
- Preserves System Pressure Integrity — A correctly fitted reducing piece maintains the designed pressure differential between line sizes; a worn or improperly sized piece can cause leaks, flow restriction, or pressure loss that affects compaction performance.
- Genuine Wacker Neuson OEM Part — Carries the full backing of Wacker Neuson's parts program, giving you confidence that part number 5100011648 is the correct, authorized component for these machines.
A reducing piece is a threaded or press-fit adapter used to connect two fluid lines or ports of different diameters within a hydraulic or fluid system. It allows the machine's plumbing to transition smoothly between line sizes without turbulence, pressure drop, or leakage at the junction point. When this component fails or develops a leak — whether through thread damage, corrosion, or seal degradation — it can compromise system pressure and lead to fluid loss, reduced compaction force, or contamination of the hydraulic circuit.
Part Details
| Part Number | 5100011648 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Reducing Piece |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD18-100 C Tandem Roller | RD18-100 C | 5100011384 |
| RD18-100 C Tandem Roller | RD18-100 C US | 5100027574 |
| RD 18-100 C | RD18-100c | 5100047362, 5100055776 |
| Vibration Roller | RD18-100c 3 | 5100047363 |
| 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.
