The Wacker Neuson Reducing Piece is a genuine OEM component designed for the RD40-130 and RD45-140 series tandem rollers, including C and O variants across both the original and.3 model generations. Sourced directly from Wacker Neuson, this part meets the exact specifications required for proper operation in your machine. Whether you're servicing an RD40-130, RD45-140, or one of the extended series variants such as the RD40-130c.3 or RD45-140o.3, part number ensures a direct, like-for-like replacement with no guesswork on compatibility.
Key Features
- Genuine OEM Dimensional Accuracy — Manufactured to Wacker Neuson's exact tolerances, ensuring the reducing piece seats and seals correctly within the hydraulic or fluid circuit pathway it serves.
- Direct Drop-In Replacement — Matches the original connection points and thread or bore specifications of the factory-installed part, allowing straightforward installation without rework.
- Broad Series Coverage — Fits RD40-130 and RD45-140 tandem rollers across standard, C, and O configurations, as well as the updated .3 generation models, covering a wide range of Wacker Neuson compaction equipment.
- Maintains Fluid Circuit Integrity — A correctly functioning reducing piece manages the transition between different line or port sizes, keeping flow rates and pressure levels consistent. A failed or damaged piece can cause leaks, pressure loss, or system contamination.
- Verified OEM Part Number — Cross-reference 5100012973 against your machine's serial plate or parts manual to confirm fitment before ordering — this is the same part supplied through authorized Wacker Neuson service channels.
A reducing piece is a fitting used to connect two sections of a fluid or hydraulic line where the port or pipe sizes differ. It allows the system to transition smoothly between sizes without turbulence, pressure drop, or the risk of leaks at the junction. When this component wears, cracks, or develops thread damage, it can allow fluid to escape or introduce air into the circuit, leading to inconsistent machine performance or potential damage to surrounding components.
Part Details
| Part Number | 5100012973 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Reducing Piece |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD40-130 Tandem Roller | RD40-130 | 5100011391 |
| RD45-140 Tandem Roller | RD45-140 | 5100011392 |
| 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 |
| RD40-130.3 | 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 |
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.
