The Wacker Neuson Starter is a genuine OEM Starter designed for the RD24-100, RD27-120, RD28-120, and related tandem roller series, spanning standard, canopy, and open-drum configurations across multiple production generations. As a direct Wacker Neuson OEM part, the is manufactured to the same specification as the original component installed at the factory, ensuring correct electrical output, mounting interface, and engagement with the engine's ring gear. This Starter is compatible across a wide range of RD-series tandem roller variants, including US-market and.3-generation models, making it a reliable sourcing choice for fleet operators and service technicians alike.
Key Features
- Correct Electrical Output Specification — Built to OEM voltage and torque output ratings, ensuring reliable cranking force for cold and hot starts on RD-series roller engines.
- Direct Drop-In Installation — Matches the original mounting bolt pattern, solenoid connector, and drive pinion engagement so it installs without modification to brackets or wiring harnesses.
- Broad RD-Series Compatibility — Fits RD24-100, RD27-120, and RD28-120 tandem rollers including standard, canopy (C), open-drum (O), US-market, and .3-generation variants across multiple serial number ranges.
- Keeps the Compaction Cycle Running — A failed starter leaves your roller unable to fire up on site; this OEM unit restores dependable engine start capability so paving and compaction work stays on schedule.
- Genuine OEM Quality Assurance — Sourced directly through Wacker Neuson's authorized parts chain, carrying the same material grade and component tolerances as the part it replaces.
The starter is an electric motor mounted on the engine that, when energized by the ignition switch, drives a pinion gear into the engine's flywheel ring gear to crank the engine and initiate combustion. On compact tandem rollers like the RD-series, the starter must deliver consistent torque across varying temperatures and load conditions to bring the engine up to firing speed. When a starter fails — through worn brushes, a seized solenoid, or motor burnout — the machine will not start at all, bringing compaction operations to a complete stop until the unit is replaced.
Part Details
| Part Number | 5100012690 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Starter |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD24-100 Tandem Roller | RD24-100 | 5100011385, 5100047374 |
| RD27-120 Tandem Roller | RD27-120 | 5100011386 |
| RD24-100 C Tandem Rollers | RD24-100 C | 5100011387 |
| RD27-120 C Tandem Roller | RD27-120 C | 5100011388 |
| RD24-100 O Tandem Roller | RD24-100 O | 5100011389 |
| RD27-120 O Tandem Roller | RD27-120 O | 5100011390 |
| RD24-100 Tandem Roller | RD24-100 US | 5100021755 |
| RD28-120 Tandem Roller | RD28-120 US | 5100021756 |
| RD24-100 C Tandem Roller | RD24-100C US | 5100021757 |
| RD28-120 C Tandem Roller | RD28-120C US | 5100021758 |
| RD24-100 O Tandem Roller | RD24-100O US | 5100021759 |
| RD28-120 O Tandem Roller | RD28-120O US | 5100021800 |
| RD 24-100.3 | RD 24-100.3 | 5100032197 |
| RD27-120 | RD 27-120.3 | 5100032198 |
| RD24-100c.3 | RD24-100c.3 | 5100047370 |
| RD27-120c | RD27-120c.3 | 5100047371 |
| RD24-100o.3 | RD24-100o.3 | 5100047372 |
| RD27-120o | RD27-120o.3 | 5100047373 |
| RD28-120 | RD28-120 | 5100047375 |
| RD24-100c | RD24-100c | 5100047376 |
| RD28-120c | RD28-120c | 5100047377 |
| RD24-100o | RD24-100o | 5100047378 |
| RD28-120o | RD28-120o | 5100047379 |
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.
