The Wacker Neuson 5100016825 is a genuine OEM Locking Washer designed for the RD-series tandem rollers, covering a broad range of walk-behind and ride-on articulated models across the RD18, RD24, RD27, RD28, RD40, and RD45 families. Sourced directly through Wacker Neuson's authorized parts supply chain, this locking washer carries the same specification as the component originally installed at the factory. Fitment spans standard, combination-drum, open-drum, and DPF-equipped variants throughout the RD series, making 5100016825 one of the most widely applicable fastener components in this roller lineup. Always confirm your machine's model number before ordering to ensure a correct match.
Key Features
- Genuine OEM Material Grade — Manufactured to Wacker Neuson's specified hardness and dimensional tolerances for a locking washer, ensuring consistent clamping force and resistance to loosening under continuous vibration.
- Direct-Fit Replacement — Matches the original bore diameter and outer profile, seating correctly against mating fastener hardware without rework or shimming.
- Broad RD-Series Coverage — Compatible with RD18, RD24, RD27, RD28, RD40, and RD45 tandem rollers, including standard, combination-drum (c), open-drum (o), electric (e), and DPF-equipped variants.
- Vibration-Resistant Retention — A correctly functioning locking washer maintains fastener torque integrity during compaction cycles; a worn or missing washer allows fasteners to back out, leading to structural looseness and accelerated wear on surrounding components.
- Authorized OEM Part — Supplied as a genuine Wacker Neuson component, so it satisfies OEM parts requirements for machines still within a service agreement or extended coverage plan.
A locking washer is a hardened fastening component placed beneath a bolt or nut to prevent it from loosening due to vibration, dynamic loads, or thermal cycling. On tandem rollers like the RD series, where the entire machine frame and drum assembly are subject to continuous compaction vibration, locking washers play a critical role in keeping structural and mechanical connections secure. When a locking washer loses its tension, deforms, or is missing entirely, the fastener it supports can gradually back out, which may cause misalignment, metal-on-metal wear, or component separation in service-critical joints.
Part Details
| Part Number | 5100016825 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Locking Washer |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD18-100 Tandem Roller | RD18-100 US | 5100027573 |
| RD27-120o | RD27-120o.3 | 5100047373 |
| RD40-130 | RD40-130 | 5100047382 |
| RD40-130c.3 | RD40-130c.3 | 5100047397 |
| RD24-100c | RD24-100c | 5100047376 |
| RD28e-120c | RD28-120ce | 5100066734 |
| RD18-100c.3 | RD18-100c.3 | 5100055948 |
| RD24e-100c | RD24-100ce | 5100066733 |
| RD45-140c DPF | RD45-140c DPF | 5100055780 |
| RD24-100 | RD24-100 | 5100047374 |
| RD40-130.3 | RD40-130.3 | 5100047395 |
| RD40-130 DPF | RD40-130 DPF | 5100055777 |
| RD45-140 DPF | RD45-140 DPF | 5100055778 |
| RD28-120c DPF | RD28-120c DPF | 5100047392 |
| RD40-130c | RD40-130c | 5100047384 |
| RD24-100c DPF | RD24-100c DPF | 5100047391 |
| RD18-100 C Tandem Roller | RD18-100 C | 5100011384 |
| RD40-130c DPF | RD40-130c DPF | 5100055779 |
| RD40-130o DPF | RD40-130o DPF | 5100055781 |
| RD28-120c | RD28-120c | 5100047377 |
| Vibration Roller | RD18-100 SE | 5100044989 |
| RD45-140c.3 | RD45-140c.3 | 5100047398 |
| RD18-80.3 | RD18-80.3 | 5100055946 |
| RD18-80 Tandem Roller | RD18-80 US | 5100027572 |
| RD45-140 Tandem Roller | RD45-140 US | 5100021802 |
| RD40-130 Tandem Roller | RD40-130 US | 5100021801 |
| RD40-130o | RD40-130o | 5100047386 |
| RD40-130 O Tandem Roller | RD40-130O US | 5100021805 |
| RD27-120c | RD27-120c.3 | 5100047371 |
| RD18-80 | RD18-80 | 5100055774, 5100011382, 5100047360 |
| RD28-120 | RD28-120 | 5100047375 |
| RD18-100c | RD18-100c | 5100055776, 5100047362 |
| RD45-140 | RD45-140 | 5100047383 |
| RD28-120 DPF | RD28-120 DPF | 5100047390 |
| Vibration Roller | RD18-100c 3 | 5100047363 |
| RD28-120o | RD28-120o | 5100047379 |
| RD40-130 C Tandem Roller | RD40-130C US | 5100021803 |
| RD45-140.3 | RD45-140.3 | 5100047396 |
| RD28-120o DPF | RD28-120o DPF | 5100047394 |
| RD24e-100o | RD24-100oe | 5100066735 |
| RD24-100o DPF | RD24-100o DPF | 5100047393 |
| Vibration Roller | RD18-80 SE | 5100044988 |
| RD28e-120o | RD28-120oe | 5100066736 |
| RD24-100o | RD24-100o | 5100047378 |
| RD 24-100.3 | RD 24-100.3 | 5100032197 |
| RD18-100 C Tandem Roller | RD18-100 C US | 5100027574 |
| RD45-140c | RD45-140c | 5100047385 |
| RD45-140 C Tandem Roller | RD45-140C US | 5100021804 |
| RD40-130o.3 | RD40-130o.3 | 5100047399 |
| RD24e-100 | RD24-100e | 5100066731 |
| RD45-140o DPF | RD45-140o DPF | 5100055782 |
| RD28e-120 | RD28-120e | 5100066732 |
| RD24-100c.3 | RD24-100c.3 | 5100047370 |
| RD24-100o.3 | RD24-100o.3 | 5100047372 |
| RD18-100 Tandem Roller | RD18-100 | 5100011383, 5100055775, 5100047361 |
| RD27-120 | RD 27-120.3 | 5100032198 |
| RD45-140 O Tandem Roller | RD45-140O US | 5100021806 |
| RD45-140o | RD45-140o | 5100047387 |
| RD24-100 DPF | RD24-100 DPF | 5100047380 |
| RD45-140o.3 | RD45-140o.3 | 5100047400 |
| RD18 | RD18-100.3 | 5100055947 |
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.
