The Wacker Neuson Valve Block is a genuine OEM component designed for the RD40-130 and RD45-140 series tandem rollers, including standard, O-configuration, and US-market variants. Sourced directly from Wacker Neuson, this part meets the same specifications as the original, so you can restore your machine with complete confidence. Fitment covers a wide range of RD40-130 and RD45-140 models across multiple build generations, making it a versatile replacement for this entire roller family.
Key Features
- Genuine OEM Hydraulic Integrity — Manufactured by Wacker Neuson to original flow and pressure tolerances, ensuring the valve block performs exactly as the hydraulic circuit requires.
- Direct Bolt-In Replacement — Matches the original port configuration and mounting interface, so installation connects directly to existing hydraulic lines without adaptation.
- Broad RD Series Fitment — Compatible with RD40-130 and RD45-140 tandem rollers across standard, O-configuration, and US-market variants, spanning multiple production generations.
- Sustained Compaction Performance — A properly functioning valve block maintains precise hydraulic pressure control across the drum drive circuit; a worn or leaking unit leads to inconsistent drum speed and compaction loss.
- Hydraulic System Safety — Correct valve block function is critical to maintaining controlled drum operation and preventing unintended pressure surges that could affect machine handling and operator safety.
A valve block is a precision hydraulic component that routes and regulates pressurized fluid to the correct circuits within the machine — in a tandem roller, this means controlling flow to the drum drive motors that deliver compaction force. It acts as a central control hub for hydraulic pressure, directing output under load while maintaining consistent system pressure. When a valve block begins to fail — through internal leakage, worn seals, or cracked porting — the result is sluggish or uneven drum response, reduced compaction efficiency, and potential overheating of the hydraulic system.
Part Details
| Part Number | 5100011998 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Valve Block |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD40-130 Tandem Roller | RD40-130 | 5100011391 |
| RD45-140 Tandem Roller | RD45-140 | 5100011392 |
| 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 O Tandem Roller | RD40-130O US | 5100021805 |
| RD45-140 O Tandem Roller | RD45-140O US | 5100021806 |
| RD40-130.3 | RD40-130.3 | 5100047395 |
| RD45-140.3 | RD45-140.3 | 5100047396 |
| RD40-130o.3 | RD40-130o.3 | 5100047399 |
| RD45-140o.3 | RD45-140o.3 | 5100047400 |
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.
