The Wacker Neuson 5100025078 Gear Pump is a genuine OEM gear pump designed for RD40-130 and RD45-140 series tandem rollers. As a factory-sourced component, the 5100025078 meets the exact specifications required by Wacker Neuson for these machines, covering closed-drum, open-drum, DPF-equipped, and.3-series variants across both model families. Proper hydraulic flow depends on a pump that matches the original design — this part delivers that without compromise. Confirm your machine's model number before ordering to ensure a direct match.
Key Features
- Factory-Correct Hydraulic Output: — Engineered to the precise flow and pressure specifications of the original pump, maintaining consistent hydraulic performance across the RD40-130 and RD45-140 drivetrain.
- Genuine OEM Part: — Sourced directly from Wacker Neuson, part number 5100025078 is identical to the component installed at the factory — no guesswork on compatibility.
- Broad Model Coverage: — Fits the full RD40-130 and RD45-140 tandem roller range, including closed-drum (c), open-drum (o), DPF, .3-series, and US-market variants.
- Drop-In Installation: — Matches original port sizing, shaft dimensions, and mounting configuration, allowing straightforward replacement without machining or adaptation.
- Protects Downstream Hydraulic Components: — A worn or failing gear pump causes pressure loss, erratic drum drive, and accelerated wear on motors, valves, and cylinders. Replacing it promptly preserves the integrity of the entire hydraulic circuit.
A gear pump is the heart of the hydraulic system on a tandem roller, converting engine power into pressurized fluid flow that drives the drum propulsion motors, vibration circuits, and steering functions. When the gear pump wears internally — through scored gear faces or increased internal leakage — hydraulic pressure drops, and the machine loses propulsion force, vibration amplitude, or both, directly affecting compaction output. Replacing a failing pump with a genuine OEM unit like the Wacker Neuson 5100025078 restores full system pressure and ensures every downstream hydraulic function operates as intended.
Part Details
| Part Number | 5100025078 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Gear Pump |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD40-130c | RD40-130c | 5100047384 |
| RD40-130o.3 | RD40-130o.3 | 5100047399 |
| RD40-130o | RD40-130o | 5100047386 |
| RD45-140c.3 | RD45-140c.3 | 5100047398 |
| RD40-130 C Tandem Roller | RD40-130C US | 5100021803 |
| RD40-130 Tandem Roller | RD40-130 US | 5100021801 |
| RD45-140o DPF | RD45-140o DPF | 5100055782 |
| RD45-140 C Tandem Roller | RD45-140 C | 5100011394 |
| RD45-140o | RD45-140o | 5100047387 |
| RD40-130c DPF | RD40-130c DPF | 5100055779 |
| RD40-130 O | RD40-130 O | 5100011395 |
| RD40-130 | RD40-130 | 5100047382, 5100011391 |
| RD45-140o.3 | RD45-140o.3 | 5100047400 |
| RD45-140 C Tandem Roller | RD45-140C US | 5100021804 |
| RD45-140 O Tandem Roller | RD45-140 O | 5100011396 |
| RD45-140.3 | RD45-140.3 | 5100047396 |
| RD45-140c | RD45-140c | 5100047385 |
| RD40-130 C Tandem Roller | RD40-130 C | 5100011393 |
| RD45-140 Tandem Roller | RD45-140 US | 5100021802 |
| RD40-130c.3 | RD40-130c.3 | 5100047397 |
| RD40-130.3 | RD40-130.3 | 5100047395 |
| RD40-130 DPF | RD40-130 DPF | 5100055777 |
| RD45-140 DPF | RD45-140 DPF | 5100055778 |
| RD45-140c DPF | RD45-140c DPF | 5100055780 |
| RD45-140 Tandem Roller | RD45-140 | 5100011392, 5100047383 |
| RD45-140 O Tandem Roller | RD45-140O US | 5100021806 |
| RD40-130 O Tandem Roller | RD40-130O US | 5100021805 |
| RD40-130o DPF | RD40-130o DPF | 5100055781 |
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.
