The Bomag 05559549 Reducing Nipple is a genuine OEM fitting designed for the BW 120 AD tandem roller and a range of Bomag recycler/stabilizer machines, including the MPH 122-2, MPH 125, MPH 600, MPH 600 3B/4i-PB, MPH 600 EU-FLEX, and RS 650. Sourced directly from Bomag, this reducing nipple carries the exact dimensions and thread specifications of the original component it replaces. This part installs directly into the hydraulic or fluid circuit where a step-down in line size is required, ensuring a leak-free connection without improvised adapters. Confirm your model against part number 05559549 before ordering to ensure an accurate match.
Key Features
- Genuine OEM Thread Integrity — machined to Bomag's original thread form and taper, delivering the sealing performance the factory circuit demands from a reducing fitting
- Direct Swap Fit — matches the original port sizing and connection geometry on each compatible model, so this reducing nipple threads into place without reworking lines or fittings
- Broad Confirmed Fitment — suits the BW 120 AD tandem roller as well as the MPH 122-2, MPH 125, MPH 600, MPH 600 3B/4i-PB, MPH 600 EU-FLEX, and RS 650 recycler/stabilizers
- Leak-Free Fluid Transfer — correct material grade and thread engagement prevent weeping at the reduction point, maintaining system pressure and protecting downstream components
- Genuine Part Assurance — sold under part number 05559549, giving you traceable OEM provenance and confidence that the fitting matches Bomag's own catalog specification
A reducing nipple is a threaded hydraulic or fluid-line fitting that steps down from a larger inlet thread to a smaller outlet thread, allowing two lines of different diameters to connect within the same circuit. In machines like the BW 120 AD and the MPH-series recycler/stabilizers, these fittings appear at key junctions in hydraulic, lubrication, or water-spray circuits where line sizes must transition cleanly. When a reducing nipple corrodes, cross-threads, or develops a weeping leak at its seating surface, system pressure drops and fluid loss can damage pumps, valves, and seals further along the circuit — making timely replacement with the correct OEM fitting essential to keeping the fluid system operating as designed.
Part Details
| Part Number | 05559549 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Reducing Nipple |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Tandem Roller | BW 120 AD | 00810146 |
| Recycler / Stabilizer | MPH 122-2 | 00818177, 00818727, 00818911, 00824987 |
| Recycler / Stabilizer | MPH 125 | 00818273, 00818681, 00818909 |
| Recycler / Stabilizer | MPH 600 | 00824097, 00824099 |
| Recycler / Stabilizer | MPH 600 3B/4i-PB | 00824645 |
| Recycler / Stabilizer | MPH 600 EU-FLEX | 00824751 |
| Recycler / Stabilizer | RS 650 | 00825131 |
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.
