The Wacker Neuson 5100011872 Inspection Glass is a genuine OEM component designed for the RD18 series walk-behind and ride-on articulated tandem rollers, including RD18-80 and RD18-100 variants. As a direct OEM replacement, this inspection glass is sourced and manufactured to the same standards as the original part fitted at the factory, ensuring a correct, hassle-free installation. It is compatible across the full RD18 model range — including RD18-80, RD18-80 US, RD18-100, RD18-100 US, RD18-100 C, and RD18-100 C US configurations. Keep your tandem roller operating at its best by replacing a clouded, cracked, or leaking sight glass before it leads to fluid monitoring failures.
Key Features
- Genuine OEM Optical Clarity — Manufactured to OEM specification with the correct transparency and material grade, so fluid levels read accurately every time.
- Direct-Fit Replacement — Matches the original mounting thread, seat diameter, and sealing surface of the RD18 series inspection port for a straightforward swap.
- Broad RD18 Series Coverage — Fits RD18-80, RD18-80 US, RD18-100, RD18-100 US, RD18-100 C, and RD18-100 C US tandem rollers across multiple serial number ranges.
- Fluid Level Visibility You Can Trust — A clear, undamaged inspection glass is essential for accurate oil or fluid level checks; a cracked or fogged glass can mask dangerously low levels and lead to machine damage.
- Leak Prevention — The correct OEM-grade sealing surface and material resist weeping and seepage at the sight port, keeping fluids where they belong.
The inspection glass provides a sealed, transparent window into a fluid reservoir — typically an oil or hydraulic fluid sump — allowing operators to check fluid levels without opening the system. A functioning inspection glass lets you spot low fluid conditions quickly during pre-operation walkthroughs, helping you catch problems before they escalate. When the glass becomes cracked, clouded, or starts to seep, accurate fluid level readings are no longer possible, creating a risk of running the machine low and causing premature wear or component failure.
Part Details
| Part Number | 5100011872 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Inspection Glass |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD18 | RD18-100.3 | 5100055947 |
| RD18-100 C Tandem Roller | RD18-100 C | 5100011384 |
| RD18-80.3 | RD18-80.3 | 5100055946 |
| Vibration Roller | RD18-100 SE | 5100044989 |
| RD18-100 Tandem Roller | RD18-100 US | 5100027573 |
| Vibration Roller | RD18-100c 3 | 5100047363 |
| RD18-80 Tandem Roller | RD18-80 US | 5100027572 |
| RD18-80 Tandem Roller | RD18-80 | 5100011382, 5100055774, 5100047360 |
| RD18-100 | RD18-100 | 5100047361, 5100055775, 5100011383 |
| RD18-100 C Tandem Roller | RD18-100 C US | 5100027574 |
| Vibration Roller | RD18-80 SE | 5100044988 |
| RD18-100c.3 | RD18-100c.3 | 5100055948 |
| RD18-100c | RD18-100c | 5100055776, 5100047362 |
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.
