The Wacker Neuson 5100011656 is a genuine OEM Filler Cap designed for the RD series walk-behind and ride-on tandem rollers, covering an extensive range of RD18, RD24, RD27, RD28, RD40, and RD45 models. Sourced directly from Wacker Neuson, this part is manufactured to the exact specifications of the original component it replaces. Whether you are servicing a compact RD18-80 or a larger RD45-140 tandem roller, the 5100011656 is the correct OEM replacement to keep your machine operating to spec. Confirm your model number against the fitment list before ordering to ensure compatibility.
Key Features
- Genuine OEM Sealing Integrity — Manufactured to original specification, ensuring the cap seats and seals correctly to prevent fluid contamination or spillage during operation.
- Direct Drop-In Replacement — Engineered to match the original filler cap mounting point exactly, allowing straightforward installation without modification to the filler neck or housing.
- Broad RD Series Coverage — Fits a wide range of Wacker Neuson RD18, RD24, RD27, RD28, RD40, and RD45 tandem roller configurations, including standard, combination, open-ROPS, and DPF variants.
- Fluid System Protection — A properly seating filler cap prevents ingress of dirt, debris, and moisture into the fluid reservoir, protecting internal components from contamination-related wear.
- Verified OEM Part Number — Ordering by Wacker Neuson part number 5100011656 confirms you are receiving the exact part specified for your machine, eliminating guesswork at the parts counter.
A filler cap seals the opening of a fluid reservoir — such as a hydraulic, fuel, or water tank — preventing contaminants from entering while also maintaining correct system pressure where applicable. On tandem rollers like the Wacker Neuson RD series, maintaining a properly sealing filler cap is essential to protecting the fluids that keep drums, drives, and cooling systems functioning correctly. A damaged, missing, or ill-fitting cap can allow dirt and moisture into the system, leading to accelerated component wear or fluid degradation over time.
Part Details
| Part Number | 5100011656 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Filler Cap |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD45-140 | RD45-140 | 5100047383, 5100011392 |
| RD27-120c | RD27-120c.3 | 5100047371 |
| RD18-100 | RD18-100 | 5100055775, 5100011383, 5100047361 |
| RD18-100c.3 | RD18-100c.3 | 5100055948 |
| RD45-140c.3 | RD45-140c.3 | 5100047398 |
| RD27-120 | RD 27-120.3 | 5100032198 |
| RD24e-100 | RD24-100e | 5100066731 |
| RD28-120 C Tandem Roller | RD28-120C US | 5100021758 |
| RD28-120c | RD28-120c | 5100047377 |
| RD18 | RD18-100.3 | 5100055947 |
| RD24-100o DPF | RD24-100o DPF | 5100047393 |
| RD45-140o | RD45-140o | 5100047387 |
| RD45-140 C Tandem Roller | RD45-140 C | 5100011394 |
| RD 24-100.3 | RD 24-100.3 | 5100032197 |
| RD18-100c | RD18-100c | 5100055776, 5100047362 |
| RD24-100 DPF | RD24-100 DPF | 5100047380 |
| RD45-140c | RD45-140c | 5100047385 |
| RD40-130 C Tandem Roller | RD40-130C US | 5100021803 |
| RD40-130c | RD40-130c | 5100047384 |
| RD40-130 O | RD40-130 O | 5100011395 |
| RD45-140c DPF | RD45-140c DPF | 5100055780 |
| RD24-100 Tandem Roller | RD24-100 US | 5100021755 |
| RD40-130 Tandem Roller | RD40-130 US | 5100021801 |
| RD24-100c | RD24-100c | 5100047376 |
| RD24-100 C Tandem Roller | RD24-100C US | 5100021757 |
| RD40-130o | RD40-130o | 5100047386 |
| RD28-120 | RD28-120 | 5100047375 |
| RD45-140 C Tandem Roller | RD45-140C US | 5100021804 |
| RD40-130o.3 | RD40-130o.3 | 5100047399 |
| RD28-120 DPF | RD28-120 DPF | 5100047390 |
| RD18-100 Tandem Roller | RD18-100 US | 5100027573 |
| RD24-100 | RD24-100 | 5100047374, 5100011385 |
| RD28-120c DPF | RD28-120c DPF | 5100047392 |
| RD27-120 O Tandem Roller | RD27-120 O | 5100011390 |
| RD27-120 Tandem Roller | RD27-120 | 5100011386 |
| RD18-80 | RD18-80 | 5100055774, 5100011382, 5100047360 |
| RD24e-100c | RD24-100ce | 5100066733 |
| RD28-120 Tandem Roller | RD28-120 US | 5100021756 |
| RD24-100 O Tandem Roller | RD24-100O US | 5100021759 |
| Vibration Roller | RD18-100c 3 | 5100047363 |
| RD24-100 C Tandem Rollers | RD24-100 C | 5100011387 |
| RD45-140 Tandem Roller | RD45-140 US | 5100021802 |
| RD40-130o DPF | RD40-130o DPF | 5100055781 |
| RD40-130 | RD40-130 | 5100047382, 5100011391 |
| RD24-100c DPF | RD24-100c DPF | 5100047391 |
| RD45-140 O Tandem Roller | RD45-140O US | 5100021806 |
| RD28-120 O Tandem Roller | RD28-120O US | 5100021800 |
| RD40-130c DPF | RD40-130c DPF | 5100055779 |
| RD45-140o.3 | RD45-140o.3 | 5100047400 |
| RD27-120o | RD27-120o.3 | 5100047373 |
| RD40-130 DPF | RD40-130 DPF | 5100055777 |
| RD45-140o DPF | RD45-140o DPF | 5100055782 |
| RD28e-120 | RD28-120e | 5100066732 |
| RD18-80.3 | RD18-80.3 | 5100055946 |
| RD18-80 Tandem Roller | RD18-80 US | 5100027572 |
| RD24-100o | RD24-100o | 5100047378 |
| 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 |
| RD24e-100o | RD24-100oe | 5100066735 |
| RD45-140 O Tandem Roller | RD45-140 O | 5100011396 |
| RD27-120 C Tandem Roller | RD27-120 C | 5100011388 |
| RD28e-120c | RD28-120ce | 5100066734 |
| Vibration Roller | RD18-100 SE | 5100044989 |
| RD18-100 C Tandem Roller | RD18-100 C US | 5100027574 |
| RD40-130c.3 | RD40-130c.3 | 5100047397 |
| RD24-100o.3 | RD24-100o.3 | 5100047372 |
| RD24-100 O Tandem Roller | RD24-100 O | 5100011389 |
| RD28-120o DPF | RD28-120o DPF | 5100047394 |
| Vibration Roller | RD18-80 SE | 5100044988 |
| RD28-120o | RD28-120o | 5100047379 |
| RD45-140 DPF | RD45-140 DPF | 5100055778 |
| RD24-100c.3 | RD24-100c.3 | 5100047370 |
| RD40-130.3 | RD40-130.3 | 5100047395 |
| RD28e-120o | RD28-120oe | 5100066736 |
| RD18-100 C Tandem Roller | RD18-100 C | 5100011384 |
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.
