The Wacker Neuson is a genuine OEM Pressure Relief Valve designed for the RD40-130 and RD45-140 series tandem rollers, including standard, C, O, DPF, and US-spec variants. As a factory-original component, this valve is manufactured to the exact specifications required by Wacker Neuson for proper hydraulic system operation across the full range of compatible roller configurations. Whether you're servicing an RD40-130 DPF, an RD45-140C, or any variant in between, part number delivers a direct, verified replacement with no guesswork on compatibility.
Key Features
- OEM-Calibrated Pressure Setting — Manufactured to the exact relief pressure specification required by the hydraulic system, ensuring the valve opens and closes at the correct threshold — not just close enough.
- Direct Drop-In Replacement — Matches the original valve's port thread size and body dimensions for straightforward installation into the existing hydraulic circuit.
- Broad RD Series Fitment — Compatible with RD40-130 and RD45-140 tandem rollers across standard, C, O, US, .3, and DPF configurations — one part number covering the full model family.
- Hydraulic System Protection — A properly functioning pressure relief valve prevents dangerous overpressure conditions in the hydraulic circuit; a faulty valve risks pump damage, hose failure, and erratic drum drive behavior.
- Genuine Wacker Neuson Quality — Sourced directly from Wacker Neuson as an authorized OEM part, carrying the same material grade and tolerancing as the original production component.
A pressure relief valve is a critical safety and control component within the hydraulic system of a tandem roller. Its job is to limit the maximum pressure in the hydraulic circuit by diverting excess fluid back to the reservoir when pressure exceeds a preset level, protecting pumps, motors, and hoses from overload. When a pressure relief valve wears out or sticks, you may notice sluggish drum drive response, overheating hydraulic fluid, or in severe cases, blown hoses and damaged hydraulic components — all of which point back to uncontrolled system pressure.
Part Details
| Part Number | 5100012055 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Pressure Relief Valve |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD40-130 Tandem Roller | RD40-130 | 5100011391, 5100047382 |
| RD45-140 Tandem Roller | RD45-140 | 5100011392, 5100047383 |
| RD40-130 C Tandem Roller | RD40-130 C | 5100011393 |
| RD45-140 C Tandem Roller | RD45-140 C | 5100011394 |
| RD40-130 O | RD40-130 O | 5100011395 |
| RD45-140 O Tandem Roller | RD45-140 O | 5100011396 |
| RD40-130 Tandem Roller | RD40-130 US | 5100021801 |
| RD45-140 Tandem Roller | RD45-140 US | 5100021802 |
| RD40-130 C Tandem Roller | RD40-130C US | 5100021803 |
| RD45-140 C Tandem Roller | RD45-140C US | 5100021804 |
| RD40-130 O Tandem Roller | RD40-130O US | 5100021805 |
| RD45-140 O Tandem Roller | RD45-140O US | 5100021806 |
| RD40-130c | RD40-130c | 5100047384 |
| RD45-140c | RD45-140c | 5100047385 |
| RD40-130o | RD40-130o | 5100047386 |
| RD45-140o | RD45-140o | 5100047387 |
| RD40-130.3 | RD40-130.3 | 5100047395 |
| RD45-140.3 | RD45-140.3 | 5100047396 |
| RD40-130c.3 | RD40-130c.3 | 5100047397 |
| RD45-140c.3 | RD45-140c.3 | 5100047398 |
| RD40-130o.3 | RD40-130o.3 | 5100047399 |
| RD45-140o.3 | RD45-140o.3 | 5100047400 |
| RD40-130 DPF | RD40-130 DPF | 5100055777 |
| RD45-140 DPF | RD45-140 DPF | 5100055778 |
| RD40-130c DPF | RD40-130c DPF | 5100055779 |
| RD45-140c DPF | RD45-140c DPF | 5100055780 |
| RD40-130o DPF | RD40-130o DPF | 5100055781 |
| RD45-140o DPF | RD45-140o DPF | 5100055782 |
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.
