The Wacker Neuson 5100012809 is a genuine OEM Oil Filler Cover Above designed for the RD-series tandem roller line, including RD24-100, RD27-120, RD28-120, RD40-130, and RD45-140 models. As a factory-sourced component, the 5100012809 is manufactured to the exact tolerances and material specifications of the original part it replaces. This cover fits across a wide range of RD-series configurations including standard, combination, open ROPS, canopy, and DPF-equipped variants. Verify your model number before ordering to confirm fitment for your specific roller configuration.
Key Features
- Genuine OEM Construction: — Manufactured by Wacker Neuson to match the original cover's material grade, profile, and sealing surface — keeping oil vapors contained and the filler port protected from debris ingestion.
- Direct-Fit Replacement: — Engineered to mount in the same position as the factory original, using existing hardware and attachment points with no rework to surrounding components.
- Broad RD-Series Compatibility: — Fits RD24-100, RD27-120, RD28-120, RD40-130, and RD45-140 tandem rollers across standard, open ROPS, canopy, DPF, and .3-series model variants.
- Contamination Defense: — A correctly seated oil filler cover prevents dirt, water, and compaction debris from entering the oil system — contamination that accelerates internal wear and compromises drum drive performance.
- Fuel System Safety Relevance: — Maintaining a secure, undamaged filler cover is essential to avoiding crankcase contamination, which can lead to undetected oil degradation and unplanned downtime on active paving or compaction sites.
The oil filler cover above serves as the protective cap and sealing surface over the engine or drive system oil filler opening on Wacker Neuson RD-series tandem rollers. Its primary role is to keep the oil fill port sealed during operation, shielding the lubrication system from dust, water, and debris that are common in asphalt and soil compaction environments. When this cover is cracked, missing, or no longer seating properly, contaminants can enter the oil system, accelerating wear on internal components and potentially causing costly damage to the roller's drivetrain or engine.
Part Details
| Part Number | 5100012809 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Oil Filler Cover Above |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD45-140o.3 | RD45-140o.3 | 5100047400 |
| RD45-140 Tandem Roller | RD45-140 US | 5100021802 |
| RD28-120 | RD28-120 | 5100047375 |
| RD24-100c.3 | RD24-100c.3 | 5100047370 |
| RD40-130 O Tandem Roller | RD40-130O US | 5100021805 |
| RD40-130o DPF | RD40-130o DPF | 5100055781 |
| RD40-130 Tandem Roller | RD40-130 | 5100011391, 5100047382 |
| RD27-120o | RD27-120o.3 | 5100047373 |
| RD45-140 C Tandem Roller | RD45-140C US | 5100021804 |
| RD40-130 DPF | RD40-130 DPF | 5100055777 |
| RD28-120o | RD28-120o | 5100047379 |
| RD28-120c | RD28-120c | 5100047377 |
| RD40-130o.3 | RD40-130o.3 | 5100047399 |
| RD40-130c | RD40-130c | 5100047384 |
| RD45-140c DPF | RD45-140c DPF | 5100055780 |
| RD24-100 O Tandem Roller | RD24-100 O | 5100011389 |
| RD24-100 C Tandem Rollers | RD24-100 C | 5100011387 |
| RD24-100 C Tandem Roller | RD24-100C US | 5100021757 |
| RD45-140 O Tandem Roller | RD45-140 O | 5100011396 |
| RD28-120 C Tandem Roller | RD28-120C US | 5100021758 |
| RD27-120c | RD27-120c.3 | 5100047371 |
| RD24-100 O Tandem Roller | RD24-100O US | 5100021759 |
| RD40-130 C Tandem Roller | RD40-130 C | 5100011393 |
| RD24-100 | RD24-100 | 5100047374, 5100011385 |
| RD27-120 C Tandem Roller | RD27-120 C | 5100011388 |
| RD24-100c | RD24-100c | 5100047376 |
| RD40-130 Tandem Roller | RD40-130 US | 5100021801 |
| RD28-120 O Tandem Roller | RD28-120O US | 5100021800 |
| RD45-140 O Tandem Roller | RD45-140O US | 5100021806 |
| RD40-130c DPF | RD40-130c DPF | 5100055779 |
| RD28-120 Tandem Roller | RD28-120 US | 5100021756 |
| RD24-100o.3 | RD24-100o.3 | 5100047372 |
| RD24-100o | RD24-100o | 5100047378 |
| RD24-100 Tandem Roller | RD24-100 US | 5100021755 |
| RD45-140.3 | RD45-140.3 | 5100047396 |
| RD45-140c.3 | RD45-140c.3 | 5100047398 |
| RD27-120 | RD 27-120.3 | 5100032198 |
| RD27-120 O Tandem Roller | RD27-120 O | 5100011390 |
| RD40-130 O | RD40-130 O | 5100011395 |
| RD 24-100.3 | RD 24-100.3 | 5100032197 |
| RD45-140 Tandem Roller | RD45-140 | 5100011392, 5100047383 |
| RD45-140c | RD45-140c | 5100047385 |
| RD40-130o | RD40-130o | 5100047386 |
| RD45-140 DPF | RD45-140 DPF | 5100055778 |
| RD40-130.3 | RD40-130.3 | 5100047395 |
| RD40-130c.3 | RD40-130c.3 | 5100047397 |
| RD45-140 C Tandem Roller | RD45-140 C | 5100011394 |
| RD45-140o | RD45-140o | 5100047387 |
| RD40-130 C Tandem Roller | RD40-130C US | 5100021803 |
| RD27-120 Tandem Roller | RD27-120 | 5100011386 |
| RD45-140o DPF | RD45-140o DPF | 5100055782 |
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.
