The Wacker Neuson is a genuine OEM Relief Valve designed for the RD27-100 and RD27-120 series hydrostatic vibratory and tandem ride-on rollers. Sourced directly from Wacker Neuson, this part meets the exact specifications of the original component — ensuring it installs and performs the same as what left the factory. It fits across the full RD27 lineup, including Pro, Basic, and T4F-compliant variants of both the RD27-100 and RD27-120 models. When hydraulic system integrity matters on the job, trusting a genuine OEM part is the straightforward choice.
Key Features
- OEM-Rated Pressure Tolerance — Manufactured to the exact cracking pressure specification required by the RD27 hydrostatic drive circuit, so system pressure stays within design limits.
- Direct Bolt-In Replacement — Matches the original valve's thread pitch, body dimensions, and port sizing for a straightforward swap with no modifications to hydraulic lines or fittings.
- Broad RD27 Series Coverage — Confirmed fitment across multiple RD27-100 and RD27-120 configurations, including Pro, Basic, and Tier 4 Final compliant roller variants.
- Protects the Hydrostatic Drive System — A correctly functioning relief valve prevents overpressure events that can damage pumps, motors, and hydraulic lines; a failed or stuck valve puts the entire drive circuit at risk.
- Genuine Wacker Neuson OEM Part — Supplied under part number 5200012660 straight from the manufacturer's parts supply chain, with no guesswork about compatibility or material grade.
A relief valve is a hydraulic safety and control component that limits the maximum pressure within a circuit by diverting flow back to the reservoir when pressure exceeds a set threshold. In a hydrostatic vibratory roller like the RD27 series, this valve protects the drive and vibration hydraulic circuits from pressure spikes caused by sudden load changes, stalls, or system surges. When a relief valve wears, sticks open, or fails to seat properly, the machine may exhibit sluggish drive response, excessive heat buildup in the hydraulic fluid, or, in more severe cases, damage to downstream components such as the hydraulic pump or wheel motors.
Part Details
| Part Number | 5200012660 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Relief Valve |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Hydrostatic Vibratory Roller | RD27-100 | 5200005878, 5200014868, 5200023554, 5200023556, 5200005876, 5200021387 |
| Hydrostatic Vibratory Roller | RD27-120 | 5200005879, 5200014869, 5200014922, 5200014923, 5200023555, 5200023557, 5200024441, 5200005877, 5200021389 |
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.
