The Wacker Neuson Diode is a genuine OEM component designed for the RD24-100, RD27-120, RD40-130, and RD45-140 series tandem rollers, including standard, canopy, and open-ROPS variants. As a direct OEM replacement, this diode is manufactured to the same electrical specifications as the original part, ensuring correct polarity protection and circuit integrity within your machine's charging and power distribution system. Verified fitment spans multiple generation variants across the RD tandem roller lineup, making this the trusted choice when restoring your electrical system to proper working order.
Key Features
- OEM-Matched Electrical Specification — Manufactured to the original rated voltage and current tolerance, ensuring consistent one-way current flow without voltage drop or overload risk.
- Drop-In Connector Compatibility — Designed to match the original wiring harness connection points on RD series rollers, allowing straightforward installation without splicing or adapting existing connectors.
- Broad RD Series Fitment — Covers RD24-100, RD27-120, RD40-130, and RD45-140 tandem rollers across standard, canopy (C), and open-ROPS (O) configurations, as well as .3-generation models.
- Protects Charging System Components — A correctly functioning diode prevents reverse current from damaging the alternator and battery; a failed diode can cause battery drain, charging faults, or complete electrical shutdown on the job.
- Electrical Safety Compliance — Genuine OEM sourcing ensures this diode meets the original circuit protection requirements, an important consideration for electrical components where incorrect ratings can pose fire or system damage risks.
A diode is a one-way electrical valve — it allows current to flow in a single direction and blocks it from flowing in reverse. In a tandem roller's electrical system, the diode plays a critical role in the charging circuit, preventing reverse current from feeding back into the alternator or other sensitive components when the machine is operating or shutting down. When a diode fails, the result is often a battery that won't hold a charge, erratic electrical behavior, or damage to upstream components — symptoms that can easily be mistaken for a failing alternator or battery if the diode isn't checked first.
Part Details
| Part Number | 5100013451 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Diode |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD24-100 Tandem Roller | RD24-100 | 5100011385 |
| 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 |
| RD40-130 Tandem Roller | RD40-130 | 5100011391 |
| RD45-140 Tandem Roller | RD45-140 | 5100011392 |
| RD40-130 C Tandem Roller | RD40-130 C | 5100011393 |
| RD45-140 C Tandem Roller | RD45-140 C | 5100011394 |
| RD40-130 O | RD40-130 O | 5100011395 |
| RD45-140 O Tandem Roller | RD45-140 O | 5100011396 |
| 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 |
| RD40-130.3 | RD40-130.3 | 5100047395 |
| RD45-140.3 | RD45-140.3 | 5100047396 |
| RD40-130c.3 | RD40-130c.3 | 5100047397 |
| RD45-140c.3 | RD45-140c.3 | 5100047398 |
| RD40-130o.3 | RD40-130o.3 | 5100047399 |
| 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.
