The Wacker Neuson 5100011987 is a genuine OEM Directional Valve designed for the RD-series tandem rollers, covering the RD18, RD24, RD27, RD28, RD40, and RD45 model families. As a direct OEM replacement, this valve is manufactured to the same specifications as the original unit, ensuring a proper fit within the hydraulic system of your roller. This part is confirmed compatible across a wide range of RD-series configurations including standard, combination, open-drum, and closed-drum variants in both domestic US and international specifications.
Key Features
- Genuine OEM Hydraulic Precision — Manufactured to the original flow-rating and porting specifications required for correct directional control in Wacker Neuson tandem roller hydraulic circuits.
- Direct Bolt-In Replacement — Matches the original valve's port layout and mounting configuration, allowing straightforward installation without modifications to hydraulic lines or manifold connections.
- Broad RD-Series Coverage — Fits RD18, RD24, RD27, RD28, RD40, and RD45 tandem rollers across standard, open-drum, combination, SE, and US-spec variants.
- Maintains Positive Hydraulic Response — A correctly functioning directional valve ensures crisp, consistent control of drum drive and steering functions; a failing valve causes sluggish or unpredictable roller response on the mat.
- Verified OEM Part Number — Part number 5100011987 is the Wacker Neuson factory-issued reference, confirming you are ordering the correct valve for your machine configuration.
A directional valve controls the flow path of hydraulic fluid within the roller's drive and steering circuits, determining which direction pressure is sent to move or steer the machine. By routing fluid to the correct actuator or motor on demand, it gives the operator precise control over machine travel and drum operation. When the directional valve wears or fails, the roller may exhibit loss of drive, erratic steering behavior, or an inability to switch between forward and reverse, making prompt replacement essential for safe and productive compaction work.
Part Details
| Part Number | 5100011987 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Directional Valve |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD18-80 | RD18-80 | 5100047360, 5100011382 |
| RD24-100 | RD24-100 | 5100047374, 5100011385 |
| Vibration Roller | RD18-100 SE | 5100044989 |
| RD24-100 Tandem Roller | RD24-100 US | 5100021755 |
| RD40-130 Tandem Roller | RD40-130 US | 5100021801 |
| RD28-120o | RD28-120o | 5100047379 |
| RD40-130.3 | RD40-130.3 | 5100047395 |
| RD40-130 C Tandem Roller | RD40-130 C | 5100011393 |
| RD18-100 Tandem Roller | RD18-100 US | 5100027573 |
| RD24-100o | RD24-100o | 5100047378 |
| RD45-140o.3 | RD45-140o.3 | 5100047400 |
| RD40-130c.3 | RD40-130c.3 | 5100047397 |
| RD18-80 Tandem Roller | RD18-80 US | 5100027572 |
| Vibration Roller | RD18-100c 3 | 5100047363 |
| RD24-100c | RD24-100c | 5100047376 |
| RD27-120 O Tandem Roller | RD27-120 O | 5100011390 |
| RD27-120 C Tandem Roller | RD27-120 C | 5100011388 |
| RD45-140 O Tandem Roller | RD45-140 O | 5100011396 |
| RD27-120c | RD27-120c.3 | 5100047371 |
| RD24-100o.3 | RD24-100o.3 | 5100047372 |
| RD28-120 | RD28-120 | 5100047375 |
| RD28-120 Tandem Roller | RD28-120 US | 5100021756 |
| RD45-140.3 | RD45-140.3 | 5100047396 |
| RD28-120c | RD28-120c | 5100047377 |
| RD27-120 | RD 27-120.3 | 5100032198 |
| RD24-100 O Tandem Roller | RD24-100 O | 5100011389 |
| RD45-140 C Tandem Roller | RD45-140 C | 5100011394 |
| RD24-100 O Tandem Roller | RD24-100O US | 5100021759 |
| RD40-130 C Tandem Roller | RD40-130C US | 5100021803 |
| RD45-140 Tandem Roller | RD45-140 US | 5100021802 |
| Vibration Roller | RD18-80 SE | 5100044988 |
| RD27-120o | RD27-120o.3 | 5100047373 |
| RD45-140 O Tandem Roller | RD45-140O US | 5100021806 |
| RD45-140 Tandem Roller | RD45-140 | 5100011392 |
| RD40-130o.3 | RD40-130o.3 | 5100047399 |
| RD45-140 C Tandem Roller | RD45-140C US | 5100021804 |
| RD24-100 C Tandem Rollers | RD24-100 C | 5100011387 |
| RD18-100 Tandem Roller | RD18-100 | 5100011383, 5100047361 |
| RD28-120 C Tandem Roller | RD28-120C US | 5100021758 |
| RD40-130 O | RD40-130 O | 5100011395 |
| RD40-130 O Tandem Roller | RD40-130O US | 5100021805 |
| RD18-100 C Tandem Roller | RD18-100 C US | 5100027574 |
| RD 24-100.3 | RD 24-100.3 | 5100032197 |
| RD40-130 Tandem Roller | RD40-130 | 5100011391 |
| RD18-100 C Tandem Roller | RD18-100 C | 5100011384 |
| RD28-120 O Tandem Roller | RD28-120O US | 5100021800 |
| RD24-100c.3 | RD24-100c.3 | 5100047370 |
| RD24-100 C Tandem Roller | RD24-100C US | 5100021757 |
| RD45-140c.3 | RD45-140c.3 | 5100047398 |
| RD27-120 Tandem Roller | RD27-120 | 5100011386 |
| RD 18-100 C | RD18-100c | 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.
