The Wacker Neuson Oil Relief Valve is a genuine OEM component designed for the RD7H-S double drum roller series, DPU 4045H, DPU 5045H, and DPU 5545H vibratory plate compactors, along with a broad range of related DPU 4545H variants. As a direct factory replacement, this valve is produced to the exact tolerances and pressure ratings specified for these machines, ensuring the hydraulic and lubrication circuits perform as originally engineered. Verified fitment spans over 40 individual model configurations across the RD7 roller and DPU compactor lines, making this a high-demand service part for fleets running multiple Wacker Neuson machines.
Key Features
- OEM-Calibrated Pressure Control — Manufactured to the precise cracking pressure specification required by these engines, so the lubrication circuit opens and closes at exactly the right threshold — not an approximation.
- Drop-In Installation — Threaded to the original port dimensions for a direct swap with no machining, tapping, or adapter hardware needed.
- Broad DPU and RD Series Fitment — Confirmed compatibility across DPU 4045H, DPU 4545H, DPU 5045H, and DPU 5545H vibratory plates, plus RD7H-S double drum rollers, covering a wide range of Wacker Neuson compact compaction equipment.
- Protects Against Engine Oil Starvation — A correctly functioning oil relief valve prevents over-pressurization that can force oil past seals, while also guarding against pressure drops that leave critical engine components under-lubricated.
- Genuine Wacker Neuson Part — Sourced directly through Wacker Neuson's OEM supply chain under part number 5000226586, so you receive the same component installed at the factory — not a generic substitute.
An oil relief valve regulates oil pressure within the engine's lubrication system by opening a bypass circuit when pressure exceeds the designed operating limit. This protects internal engine components — bearings, journals, and seals — from the damaging effects of excessive oil pressure while also ensuring adequate flow is maintained under varying load and temperature conditions. When an oil relief valve sticks open, oil pressure drops and the engine runs under-lubricated; when it sticks closed, pressure spikes can blow seals and cause oil leaks — either failure mode can result in rapid engine wear or a full mechanical shutdown on the jobsite.
Part Details
| Part Number | 5000226586 |
|---|---|
| Old Part Number | 0226586 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Oil Relief Valve |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD 7S | RD7H-S EU | 5000620795 |
| RD7H-S ROLLER,DOUBLE DRUM | RD7H-S | 5000009487 |
| V.Plate DPU 5045Heap | DPU 5045H | 5000610046, 5000610052, 5000610047 |
| V.Plate DPU 4045Hap | DPU 4045H | 5000610044, 5000610051, 5000610064 |
| DPU5545Heh | DPU5545Heh | 5100009652 |
| DPU5545HEH US | DPU5545Heh US | 5100009653 |
| DPU5545Hehap | DPU5545Hehap | 5100009654 |
| DPU5545Hech | DPU5545Hech | 5100009655, 5100051523 |
| DPU4545Heh | DPU4545Heh | 5100009659 |
| DPU4545HEH US | DPU4545Heh US | 5100009660 |
| DPU4545Hech | DPU4545Hech | 5100015429, 5100051522 |
| DPU5545He | DPU5545He | 5100016947 |
| DPU5545Heap | DPU5545Heap | 5100016949 |
| DPU5545Hec | DPU5545Hec | 5100016950 |
| DPU4545He | DPU4545He | 5100016951 |
| DPU4545Hec | DPU4545Hec | 5100016953 |
| DPU5545H | DPU 5545H | 5100009656, 5000610352 |
| DPU4545H | DPU 4545H | 5100009661, 5000610348 |
| DPU5545HECH US | DPU5545Hech US | 5100016948 |
| DPU4545HECH US | DPU4545Hech US | 5100016952 |
| DPU4545Hechzf | DPU4545Hechzf | 5100022112 |
| DPU 5045He-VIBROPLATE | DPU 5045He US | 5000610367 |
| DPU5545He-VIBROPLATE | DPU 5545He US | 5000610402 |
| Vibratory Plate DPU 4545He US | DPU 4545He US | 5100000679 |
| DPU4545He-VIBROPLATE | DPU 4545He | 5000610347 |
| Vibratory Plate DPU 4545Hap | DPU 4545Hap | 5000610349 |
| Vibratory Plate DPU 5545He | DPU 5545He | 5000610351 |
| Vibratory Plate DPU 5545Heap | DPU 5545Heap | 5000610353 |
| Vibratory Plate | DPU 5545Hec | 5100005859 |
| RD7Heh | RD7Heh | 5100006334 |
| RD7Hehf | RD7Hehf | 5100006339 |
| RD7Hehfb | RD7Hehfb | 5100006344 |
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.
