The Wacker Neuson Filler Cap is a genuine OEM component designed for the RC50, RC70, and RD24e/RD28e series single drum soil compactors and vibration rollers. As a direct OEM replacement, this filler cap is manufactured to Wacker Neuson's exact specifications, ensuring a proper seal and correct fit on every compatible machine. Fitment covers a wide range of RC50, RC50p, RC70, RC70p, and RC70vo variants — including DPF CAB and DPF ROPS configurations — as well as the RD24-100e, RD24-100ce, RD24-100oe, RD28-120e, RD28-120ce, and RD28-120oe electric roller models. Ordering by part number confirms you're getting the right cap for your machine.
Key Features
- OEM Sealing Integrity — Manufactured to Wacker Neuson's exact thread and sealing tolerances, ensuring a secure, leak-free closure on the filler point every time.
- Direct Drop-In Replacement — Threads directly onto the existing filler neck with no modification; removes and installs using standard service procedures already familiar to your crew.
- Broad RC and RD Series Coverage — Fits RC50, RC50p, RC70, RC70p, and RC70vo compactors across standard, DPF CAB, and DPF ROPS configurations, plus RD24e and RD28e electric roller variants.
- Contamination Defense — A correctly seated filler cap keeps dirt, debris, and moisture out of the fluid reservoir, protecting internal components from accelerated wear and contamination-related damage.
- Fuel and Fluid System Compliance — Using the correct OEM cap maintains the integrity of the sealed fluid system, helping prevent uncontrolled venting or pressure loss that could affect machine operation or create a spill hazard.
A filler cap seals the opening used to add fluid — whether hydraulic oil, fuel, or another service fluid — to the machine's reservoir. Its primary job is to keep the system closed during operation, preventing contamination from entering and fluid from escaping. When a filler cap is cracked, missing its seal, or cross-threaded, it can allow dirt and moisture into the reservoir, leading to fluid degradation and internal component damage; on a fuel system, a compromised cap can also create a fire or spill risk during operation.
Part Details
| Part Number | 5100040276 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Filler Cap |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Single drum soil compactor RC50 | RC50 | 5100021295, 5100047388 |
| Single drum soil compactor RC50P | RC50P | 5100021296 |
| Single drum soil compactor RC70 | RC70 | 5100021297, 5100047410 |
| Single drum soil compactor RC70P | RC70P | 5100021298 |
| Single drum soil compactor RC70VO | RC70VO | 5100021299 |
| RC50 Single Drum Soil Compactor | RC50 US | 5100027575, 5100047413 |
| RC50p Single Drum Soil Compactor | RC50p US | 5100027576, 5100047414 |
| RC70 Single Drum Soil Compactor | RC70 US | 5100027577, 5100047415 |
| Vibration Roller | RC70 VO US | 5100027578 |
| RC70p Single Drum Soil Compactor | RC70p US | 5100027579, 5100047416 |
| RC50p | RC50p | 5100047389 |
| RC70p | RC70p | 5100047411 |
| RC70vo | RC70vo | 5100047412 |
| RC50 | RC50 DPF CAB | 5100064255 |
| RC50 | RC50 DPF ROPS | 5100064256 |
| RC50p | RC50p DPF CAB | 5100064257 |
| RC50p | RC50p DPF ROPS | 5100064258 |
| RC70 | RC70 DPF CAB | 5100064259 |
| RC70 | RC70 DPF ROPS | 5100064260 |
| RC70p | RC70p DPF CAB | 5100064261 |
| RC70p | RC70p DPF ROPS | 5100064262 |
| RC70vo | RC70vo DPF CAB | 5100064263 |
| RD24e-100 | RD24-100e | 5100066731 |
| RD28e-120 | RD28-120e | 5100066732 |
| RD24e-100c | RD24-100ce | 5100066733 |
| RD28e-120c | RD28-120ce | 5100066734 |
| RD24e-100o | RD24-100oe | 5100066735 |
| RD28e-120o | RD28-120oe | 5100066736 |
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.
