The Wacker Neuson 5100018010 is a genuine OEM Filler Cap designed for the RD40-130 and RD45-140 tandem roller series and the RC50, RC70, and RC110 single-drum soil compactor series. As a direct OEM replacement, this cap is manufactured to the same specification as the original part fitted at the factory, ensuring a correct, consistent seal every time. Fitment spans a wide range of configurations across both the RD tandem roller and RC single-drum compactor families, including ROPS, CAB, DPF, padfoot, and smooth-drum variants operating across US and international markets.
Key Features
- Genuine OEM Sealing Specification — Manufactured to the original pressure and material tolerances required for a proper fluid-tight seal, not a generic cap that approximates the spec.
- Direct Drop-In Replacement — Engineered to thread or press into the original filler port opening on compatible RD and RC series machines with no adaptation needed.
- Broad Fitment Across RD and RC Families — A single part number covers the RD40-130, RD45-140, RC50, RC70, and RC110 series in standard, padfoot, CAB, ROPS, and DPF configurations.
- Contamination Prevention — A correctly seated filler cap keeps dirt, debris, and moisture out of the fluid reservoir, protecting internal components from accelerated wear and contamination damage.
- Fuel and Fluid System Integrity — A failed or missing filler cap on heavy compaction equipment creates a direct path for contaminants into the system and a potential spillage hazard during operation; replacing promptly restores system integrity.
A filler cap seals the fluid reservoir access point on the machine — whether that is the fuel tank, hydraulic reservoir, or engine oil filler, depending on application. Its primary role is to maintain a clean, closed system by preventing the ingress of dirt, water, and debris that would otherwise contaminate the fluid and cause damage to pumps, injectors, or hydraulic components. When a filler cap cracks, loses its seal, or goes missing entirely, the machine becomes vulnerable to fluid loss and contamination, both of which can lead to significant component wear or system failure if left unaddressed.
Part Details
| Part Number | 5100018010 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Filler Cap |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD45-140 | RD45-140 | 5100047383, 5100011392 |
| RC110 | RC110 | 5100030674 |
| Compactor RC110 US CAB | RC110 US CAB | 5100064270 |
| RC50p Single Drum Soil Compactor | RC50p US | 5100027576, 5100047414 |
| RD45-140c.3 | RD45-140c.3 | 5100047398 |
| RC50p | RC50p | 5100047389 |
| RC70 | RC70 | 5100047410, 5100021297 |
| RD45-140o | RD45-140o | 5100047387 |
| RC70 US | RC70 US | 5100047415, 5100027577 |
| RD45-140 C Tandem Roller | RD45-140 C | 5100011394 |
| Compactor RC110p US CAB | RC110p US CAB | 5100064271 |
| RC50p | RC50p DPF CAB | 5100064257 |
| RC70p | RC70p DPF ROPS | 5100064262 |
| RD45-140c | RD45-140c | 5100047385 |
| RD40-130 C Tandem Roller | RD40-130C US | 5100021803 |
| RC110P | RC110P | 5100030675 |
| RD40-130c | RD40-130c | 5100047384 |
| RD40-130 O | RD40-130 O | 5100011395 |
| Single drum soil compactor RC70P | RC70P | 5100021298 |
| RC70 | RC70 DPF ROPS | 5100064260 |
| RC70p Single Drum Soil Compactor | RC70p US | 5100027579, 5100047416 |
| RC50 | RC50 DPF ROPS | 5100064256 |
| Compactor RC110 US Rops | RC110 US Rops | 5100056461 |
| RD40-130 Tandem Roller | RD40-130 US | 5100021801 |
| RD40-130o | RD40-130o | 5100047386 |
| RC70vo | RC70vo | 5100047412 |
| RD45-140 C Tandem Roller | RD45-140C US | 5100021804 |
| RD40-130o.3 | RD40-130o.3 | 5100047399 |
| RD45-140 Tandem Roller | RD45-140 US | 5100021802 |
| RD40-130 | RD40-130 | 5100047382, 5100011391 |
| RC50 | RC50 | 5100047388, 5100021295 |
| RD45-140 O Tandem Roller | RD45-140O US | 5100021806 |
| RD45-140o.3 | RD45-140o.3 | 5100047400 |
| Single drum soil compactor RC70VO | RC70VO | 5100021299 |
| Compactor RC110p US Rops | RC110p US Rops | 5100056462 |
| RC70p | RC70p DPF CAB | 5100064261 |
| RC50 Single Drum Soil Compactor | RC50 US | 5100027575, 5100047413 |
| RD45-140.3 | RD45-140.3 | 5100047396 |
| RD40-130 O Tandem Roller | RD40-130O US | 5100021805 |
| RD40-130 C Tandem Roller | RD40-130 C | 5100011393 |
| RC70p | RC70p | 5100047411 |
| RD45-140 O Tandem Roller | RD45-140 O | 5100011396 |
| RC70 | RC70 DPF CAB | 5100064259 |
| RD40-130c.3 | RD40-130c.3 | 5100047397 |
| Vibration Roller | RC70 VO US | 5100027578 |
| Single drum soil compactor RC50P | RC50P | 5100021296 |
| RC70vo | RC70vo DPF CAB | 5100064263 |
| RD40-130.3 | RD40-130.3 | 5100047395 |
| RC50 | RC50 DPF CAB | 5100064255 |
| RC50p | RC50p DPF ROPS | 5100064258 |
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.
