The Wacker Neuson 5100011672 Alternator is a genuine OEM Alternator designed for the RD40-130 and RD45-140 series tandem rollers. Sourced directly from Wacker Neuson, this alternator meets the exact electrical output specifications required by these machines, covering standard, combination drum (c), offset (o), DPF-equipped, and.3-tier variants across both model families. As a genuine OEM component, it ensures a direct, like-for-like replacement that integrates seamlessly with the existing charging and electrical systems on your roller. Confirm your machine model number before ordering to select the correct configuration for your unit.
Key Features
- Correct Electrical Output Spec: — Matched to the OEM voltage and amperage rating required by RD40-130 and RD45-140 tandem rollers, ensuring the charging system operates within design parameters.
- Genuine Wacker Neuson OEM Part: — Sourced directly from Wacker Neuson, this alternator carries the same part number and build specification as the unit installed at the factory.
- Broad RD-Series Coverage: — Compatible with a wide range of RD40-130 and RD45-140 variants including standard, offset, combination drum, DPF, US-spec, and .3-tier configurations.
- Drop-In Replacement: — Mounts to the same bracket points and connects to the existing wiring harness, making it a straightforward swap during scheduled maintenance or emergency repair.
- Protects Electrical System Integrity: — A failing alternator can cause battery drain, erratic instrument readings, and unexpected shutdown on the job. Replacing it promptly with the correct OEM unit keeps the roller's electrical and control systems stable.
The alternator is responsible for generating electrical power while the engine is running, keeping the battery charged and supplying current to the roller's lighting, controls, and onboard electronics. On tandem rollers like the RD40-130 and RD45-140, consistent electrical output is critical for reliable operation of the machine's instrumentation and safety systems. When an alternator begins to fail — through worn brushes, a faulty regulator, or a failing diode pack — the battery discharges under load, warning lights may appear, and the machine can shut down unexpectedly in the field.
Part Details
| Part Number | 5100011672 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Alternator |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD40-130c DPF | RD40-130c DPF | 5100055779 |
| RD45-140.3 | RD45-140.3 | 5100047396 |
| RD45-140c.3 | RD45-140c.3 | 5100047398 |
| RD40-130o | RD40-130o | 5100047386 |
| RD40-130.3 | RD40-130.3 | 5100047395 |
| RD40-130o DPF | RD40-130o DPF | 5100055781 |
| RD40-130 | RD40-130 | 5100047382, 5100011391 |
| RD45-140 O Tandem Roller | RD45-140 O | 5100011396 |
| RD40-130c.3 | RD40-130c.3 | 5100047397 |
| RD45-140o DPF | RD45-140o DPF | 5100055782 |
| RD45-140 DPF | RD45-140 DPF | 5100055778 |
| RD40-130 C Tandem Roller | RD40-130C US | 5100021803 |
| RD45-140 | RD45-140 | 5100047383, 5100011392 |
| RD40-130c | RD40-130c | 5100047384 |
| RD45-140 O Tandem Roller | RD45-140O US | 5100021806 |
| RD45-140o | RD45-140o | 5100047387 |
| RD45-140c | RD45-140c | 5100047385 |
| RD45-140 C Tandem Roller | RD45-140C US | 5100021804 |
| RD40-130o.3 | RD40-130o.3 | 5100047399 |
| RD45-140 Tandem Roller | RD45-140 US | 5100021802 |
| RD45-140c DPF | RD45-140c DPF | 5100055780 |
| RD40-130 Tandem Roller | RD40-130 US | 5100021801 |
| RD40-130 O | RD40-130 O | 5100011395 |
| RD40-130 C Tandem Roller | RD40-130 C | 5100011393 |
| RD40-130 O Tandem Roller | RD40-130O US | 5100021805 |
| RD45-140 C Tandem Roller | RD45-140 C | 5100011394 |
| RD40-130 DPF | RD40-130 DPF | 5100055777 |
| RD45-140o.3 | RD45-140o.3 | 5100047400 |
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.
