The Wacker Neuson 5100012012 is a genuine OEM Inspection Glass designed for the RD40-130 and RD45-140 series tandem rollers, including standard, combination, offset drum, and DPF-equipped variants. As a direct OEM replacement, this part is manufactured to the same specifications as the original component installed at the factory, ensuring a correct fit across the full range of compatible RD40 and RD45 roller configurations. Whether you're servicing a walk-behind compaction unit on a paving crew or maintaining a fleet of tandem rollers, part number 5100012012 is the correct OEM choice for this application.
Key Features
- OEM-Grade Optical Clarity — Manufactured to the same transparency and material standard as the original, so fluid levels read accurately without distortion or discoloration.
- Drop-In Replacement — Matches the original mounting configuration on RD40-130 and RD45-140 tandem rollers, seating correctly against existing ports and sealing surfaces without alteration.
- Broad RD-Series Coverage — Compatible with standard, open ROPS, combination drum, DPF, and .3-series variants across both the RD40-130 and RD45-140 model families, including US-market configurations.
- Supports Accurate Fluid Monitoring — A clear, undamaged inspection glass lets operators verify fluid levels quickly during pre-operation checks, helping catch low fluid conditions before they cause internal component damage.
- Genuine Wacker Neuson OEM Part — Sourced directly through the Wacker Neuson parts network, backed by the brand's OEM quality assurance for compaction equipment components.
An inspection glass is a small sight window fitted to a fluid reservoir or housing on the machine, allowing operators to check fluid levels visually without opening or draining the system. On tandem rollers like the RD40-130 and RD45-140 series, maintaining correct fluid levels is critical to the performance and longevity of the vibration system, drive components, and hydraulic circuit. When an inspection glass becomes cracked, clouded, or begins to leak, accurate fluid monitoring is no longer possible — increasing the risk of running a system low without warning and causing premature wear or failure of internal components.
Part Details
| Part Number | 5100012012 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Inspection Glass |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD45-140c DPF | RD45-140c DPF | 5100055780 |
| RD45-140o | RD45-140o | 5100047387 |
| RD45-140c | RD45-140c | 5100047385 |
| RD40-130 | RD40-130 | 5100047382, 5100011391 |
| RD45-140 O Tandem Roller | RD45-140O US | 5100021806 |
| RD40-130c DPF | RD40-130c DPF | 5100055779 |
| RD45-140 Tandem Roller | RD45-140 | 5100011392, 5100047383 |
| RD45-140c.3 | RD45-140c.3 | 5100047398 |
| RD40-130 DPF | RD40-130 DPF | 5100055777 |
| RD40-130 C Tandem Roller | RD40-130 C | 5100011393 |
| RD40-130o DPF | RD40-130o DPF | 5100055781 |
| RD40-130 O | RD40-130 O | 5100011395 |
| RD45-140.3 | RD45-140.3 | 5100047396 |
| RD45-140o DPF | RD45-140o DPF | 5100055782 |
| RD45-140 O Tandem Roller | RD45-140 O | 5100011396 |
| RD40-130c.3 | RD40-130c.3 | 5100047397 |
| RD45-140o.3 | RD45-140o.3 | 5100047400 |
| RD40-130o.3 | RD40-130o.3 | 5100047399 |
| RD40-130.3 | RD40-130.3 | 5100047395 |
| RD45-140 DPF | RD45-140 DPF | 5100055778 |
| RD40-130 C Tandem Roller | RD40-130C US | 5100021803 |
| RD40-130 Tandem Roller | RD40-130 US | 5100021801 |
| RD45-140 C Tandem Roller | RD45-140 C | 5100011394 |
| RD40-130c | RD40-130c | 5100047384 |
| RD40-130o | RD40-130o | 5100047386 |
| RD45-140 C Tandem Roller | RD45-140C US | 5100021804 |
| RD45-140 Tandem Roller | RD45-140 US | 5100021802 |
| RD40-130 O Tandem Roller | RD40-130O US | 5100021805 |
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.
