The Wacker Neuson 5100012231 is a genuine OEM Cooling Water Hose designed for the RD40-130 and RD45-140 series tandem rollers. As a direct OEM replacement, part 5100012231 is manufactured to the same specification as the original, ensuring correct routing, end fitment, and material compatibility within the engine cooling circuit. This hose is confirmed compatible across a broad range of RD40-130 and RD45-140 variants, including standard, open-ops, canopy, DPF-equipped, and US-market configurations. Ordering by part number 5100012231 guarantees you receive the correct hose for your machine's cooling system.
Key Features
- OEM Material Integrity — Manufactured from coolant-resistant hose stock rated for the operating temperatures and pressures found in the RD40-130 and RD45-140 cooling circuits.
- Drop-In Hose Routing — Molded to match the original routed path, so end connections seat correctly on the engine and radiator ports without trimming or adaptation.
- Broad Series Coverage — Fits RD40-130 and RD45-140 tandem rollers across standard, open-ops (o), canopy (c), DPF, .3-series, and US-market variants — one part number covers the full range.
- Maintains Cooling System Efficiency — A sound, leak-free hose keeps coolant flowing at the correct rate; a cracked or swollen hose leads to overheating and unplanned engine shutdowns on the compaction pass.
- Genuine Wacker Neuson OEM Part — Sourced directly from Wacker Neuson, giving you full confidence in provenance and fitment accuracy for scheduled maintenance or emergency replacement.
The cooling water hose carries engine coolant between the engine block, radiator, and associated cooling system components, maintaining the operating temperature range the engine needs to run efficiently. In a ride-on tandem roller working continuous paving or soil compaction passes, consistent coolant flow is critical — a degraded or leaking hose will cause coolant loss, rising engine temperatures, and can force the machine offline mid-shift. Replacing a worn hose at first sign of seepage or exterior cracking prevents escalating damage to the water pump, thermostat, and engine internals.
Part Details
| Part Number | 5100012231 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Cooling Water Hose |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD40-130 C Tandem Roller | RD40-130 C | 5100011393 |
| RD40-130 DPF | RD40-130 DPF | 5100055777 |
| RD40-130o.3 | RD40-130o.3 | 5100047399 |
| RD40-130c DPF | RD40-130c DPF | 5100055779 |
| RD45-140 | RD45-140 | 5100047383, 5100011392 |
| RD40-130c | RD40-130c | 5100047384 |
| RD40-130 | RD40-130 | 5100047382, 5100011391 |
| RD40-130 C Tandem Roller | RD40-130C US | 5100021803 |
| RD45-140.3 | RD45-140.3 | 5100047396 |
| RD45-140 O Tandem Roller | RD45-140 O | 5100011396 |
| RD45-140o DPF | RD45-140o DPF | 5100055782 |
| RD45-140 Tandem Roller | RD45-140 US | 5100021802 |
| RD40-130 O Tandem Roller | RD40-130O US | 5100021805 |
| RD40-130 O | RD40-130 O | 5100011395 |
| RD45-140c DPF | RD45-140c DPF | 5100055780 |
| RD40-130.3 | RD40-130.3 | 5100047395 |
| RD45-140 O Tandem Roller | RD45-140O US | 5100021806 |
| RD45-140c.3 | RD45-140c.3 | 5100047398 |
| RD45-140o | RD45-140o | 5100047387 |
| RD45-140 C Tandem Roller | RD45-140C US | 5100021804 |
| RD45-140 C Tandem Roller | RD45-140 C | 5100011394 |
| RD40-130c.3 | RD40-130c.3 | 5100047397 |
| RD40-130o DPF | RD40-130o DPF | 5100055781 |
| RD45-140c | RD45-140c | 5100047385 |
| RD45-140 DPF | RD45-140 DPF | 5100055778 |
| RD40-130 Tandem Roller | RD40-130 US | 5100021801 |
| RD40-130o | RD40-130o | 5100047386 |
| 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.
