The Wacker Neuson 5100012086 is a genuine OEM Directional Valve designed for the RD40-130 and RD45-140 series tandem rollers. Sourced directly from Wacker Neuson, this part meets the exact specifications of the original component installed at the factory. It is confirmed compatible across the full range of RD40-130 and RD45-140 variants, including Open ROPS, Canopy, and US-market configurations, as well as.3-series models. When hydraulic directional control is compromised, precise OEM replacement is the fastest path back to consistent compaction performance.
Key Features
- OEM-Matched Hydraulic Specification — Engineered to the exact flow-rate and pressure-rating requirements of the RD40-130 and RD45-140 hydraulic circuits, ensuring the valve shifts cleanly and holds position under load.
- Direct Bolt-In Replacement — Matches the original port configuration and mounting footprint, allowing the valve to seat and connect to existing hydraulic lines without adaptation.
- Broad RD-Series Coverage — Fits the full RD40-130 and RD45-140 model range, including Open ROPS (O), Canopy (C), US-market, and .3-series variants.
- Maintains Precise Travel and Drum Control — A correctly functioning directional valve routes hydraulic pressure accurately to drive and compaction circuits; a worn or stuck valve causes erratic travel, loss of drum vibration control, or complete directional failure on the roller.
- Genuine OEM Part — Carrying Wacker Neuson part number 5100012086, this valve is an authorized OEM component, giving you full confidence in part identity and sourcing traceability.
A directional valve controls which path hydraulic fluid takes within the machine's hydraulic system, determining the direction and activation of driven functions such as propulsion and drum operation. On tandem rollers like the RD40-130 and RD45-140, accurate directional control is essential for forward and reverse travel as well as vibration engagement, directly affecting compaction uniformity and operator responsiveness. When this valve wears, sticks, or leaks internally, the machine may exhibit sluggish response, unintended movement, or complete loss of a driven function — all of which require immediate attention to keep the roller operating safely and effectively.
Part Details
| Part Number | 5100012086 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Directional Valve |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD40-130 Tandem Roller | RD40-130 US | 5100021801 |
| RD40-130.3 | RD40-130.3 | 5100047395 |
| RD40-130 C Tandem Roller | RD40-130 C | 5100011393 |
| RD45-140o.3 | RD45-140o.3 | 5100047400 |
| RD40-130c.3 | RD40-130c.3 | 5100047397 |
| RD45-140 O Tandem Roller | RD45-140 O | 5100011396 |
| RD45-140.3 | RD45-140.3 | 5100047396 |
| RD45-140 C Tandem Roller | RD45-140 C | 5100011394 |
| RD40-130 C Tandem Roller | RD40-130C US | 5100021803 |
| RD45-140 Tandem Roller | RD45-140 US | 5100021802 |
| 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 |
| RD40-130 O | RD40-130 O | 5100011395 |
| RD40-130 O Tandem Roller | RD40-130O US | 5100021805 |
| RD40-130 Tandem Roller | RD40-130 | 5100011391 |
| RD45-140c.3 | RD45-140c.3 | 5100047398 |
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.
