The Wacker Neuson Water Tank is a genuine OEM water tank designed for the RD40-130 and RD45-140 series tandem rollers, including standard, C, O, and DPF variants. Sourced directly from Wacker Neuson, this part meets the exact specifications of the original component installed on your machine. It is a direct replacement for all covered model variants, ensuring a proper fit without modification. If your roller's water system is compromised, the restores correct operation across the full range of compatible RD-series machines.
Key Features
- Genuine OEM Construction — Manufactured to Wacker Neuson's original material and dimensional specifications, ensuring the tank holds correct water volume and withstands the thermal and mechanical demands of continuous compaction work.
- Direct Bolt-On Replacement — Mounts using the original attachment points and connections, so installation follows the same procedure as the factory-fitted unit with no reworking of brackets or fittings.
- Broad RD-Series Compatibility — Fits RD40-130 and RD45-140 tandem rollers across standard, C (combination), O, and DPF configurations, covering a wide range of production variants under a single part number.
- Sustained Drum Wetting Performance — A correctly functioning water tank maintains consistent water flow to the drums, preventing asphalt adhesion during paving passes and preserving compaction quality throughout the workday.
- Verified OEM Part Number — Part number 5100050708 matches Wacker Neuson's official parts documentation, giving you confidence you are ordering the correct component for your specific machine.
The water tank on a tandem roller stores and supplies water to the drum sprinkling system, which keeps the steel drums wet during asphalt compaction. Keeping the drums wetted prevents hot mix from sticking to the drum surface, which would otherwise cause tearing and surface defects in the mat. When the tank cracks, leaks, or fails to hold an adequate supply, drum wetting becomes inconsistent, leading to material pickup and poor compaction results — making prompt replacement essential to maintaining work quality.
Part Details
| Part Number | 5100050708 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Water Tank |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD40-130 Tandem Roller | RD40-130 US | 5100021801 |
| RD45-140 Tandem Roller | RD45-140 US | 5100021802 |
| RD40-130 C Tandem Roller | RD40-130C US | 5100021803 |
| RD45-140 C Tandem Roller | RD45-140C US | 5100021804 |
| RD40-130 O Tandem Roller | RD40-130O US | 5100021805 |
| RD45-140 O Tandem Roller | RD45-140O US | 5100021806 |
| RD40-130 | RD40-130 | 5100047382 |
| RD45-140 | RD45-140 | 5100047383 |
| RD40-130c | RD40-130c | 5100047384 |
| RD45-140c | RD45-140c | 5100047385 |
| RD40-130o | RD40-130o | 5100047386 |
| RD45-140o | RD45-140o | 5100047387 |
| RD40-130 DPF | RD40-130 DPF | 5100055777 |
| RD45-140 DPF | RD45-140 DPF | 5100055778 |
| RD40-130c DPF | RD40-130c DPF | 5100055779 |
| RD45-140c DPF | RD45-140c DPF | 5100055780 |
| RD40-130o DPF | RD40-130o DPF | 5100055781 |
| RD45-140o DPF | RD45-140o DPF | 5100055782 |
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.
