The Wacker Neuson 4223-400-1300 is a genuine OEM Valve Assembly designed for RD27-100 and RD27-120 series hydrostatic vibratory rollers, including standard and Traction Control configurations. As a direct OEM replacement, part 4223-400-1300 is manufactured to the exact specifications of the original component, ensuring a correct, hassle-free installation with no guesswork on fitment. This assembly is compatible across a wide range of RD27 machine numbers, covering both the RD27-100 and RD27-120 variants produced across multiple production runs. Keep your tandem roller operating at peak performance by replacing worn or failed valve components with the correct OEM part.
Key Features
- OEM-Matched Flow and Pressure Ratings — Manufactured to the exact internal tolerances and porting specifications of the original valve, ensuring proper hydraulic circuit behavior in the RD27 drivetrain.
- Drop-In Replacement for RD27 Series — Engineered to install directly into the existing valve mounting location on RD27-100 and RD27-120 machines, using the original hardware and connections.
- Broad RD27 Fitment Coverage — Confirmed compatibility across RD27-100 and RD27-120 hydrostatic vibratory rollers, including Traction Control-equipped variants across multiple production runs.
- Protects Hydrostatic System Integrity — A correctly functioning valve assembly maintains precise hydraulic flow control; a failed or leaking valve can cause erratic drive behavior, loss of compaction force, or uncontrolled roller movement.
- Genuine Wacker Neuson OEM Part — Sourced directly through authorized Wacker Neuson supply channels, so you receive the same component that left the factory with your machine.
The valve assembly in a hydrostatic vibratory roller controls the routing and regulation of hydraulic fluid through the drive and vibration circuits. On the RD27 series, this component plays a central role in managing the flow of pressurized fluid that powers the roller's forward, reverse, and vibratory functions. When the valve assembly wears out or develops internal leakage, the operator may notice sluggish or inconsistent drive response, reduced vibration amplitude, or difficulty maintaining controlled compaction passes — all of which compromise asphalt and soil compaction quality on the jobsite.
Part Details
| Part Number | 4223-400-1300 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Valve Assembly |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Hydrostatic Vibratory Roller | RD27-100 | 5000620393, 5000620508, 5000620510, 5000620512, 5000620395, 5200009322 |
| Hydrostatic Vibratory Roller | RD27-120 | 5000620394, 5000620509, 5000620511, 5000620513, 5000620396, 5200009323 |
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.
