The Bomag 05542324 Reducing Union is a genuine OEM hydraulic fitting designed for Bomag BW 131 ACW-2, BW 131 AD-2, BW 115 AC-3, BW 115 AD-3, BW 131 ACW-3, BW 131 AD-3, BW 115 AC-5, BW 131 AD-5, BW 131 ACW-5 tandem rollers and BM 500/15 Stage V, BM 600/15 Stage V, BM 500/15-2, and BM 600/15-2 cold milling machines. Sourced directly from Bomag, this reducing union carries the same specifications as the original component installed at the factory. With broad coverage across the BW 115 and BW 131 tandem roller series and the BM 500/15 and BM 600/15 cold milling machine family, this part is the correct OEM choice for restoring fluid-line integrity to your machine.
Key Features
- OEM-Matched Thread and Bore Dimensions — manufactured to Bomag's exact specifications, ensuring the correct step-down bore profile and thread form for a leak-free hydraulic or fluid-line connection
- Direct Drop-In Replacement — installs into the original port location without rework, preserving the existing line routing on tandem rollers and cold milling machines alike
- Wide Fitment Coverage — confirmed for the BW 115 AC-3, BW 115 AD-3, BW 115 AC-5, BW 131 ACW-2, BW 131 AD-2, BW 131 ACW-3, BW 131 AD-3, BW 131 AD-5, BW 131 ACW-5 tandem rollers and the BM 500/15 Stage V, BM 600/15 Stage V, BM 500/15-2, and BM 600/15-2 cold milling machines
- Fluid System Integrity Restored — a worn, cracked, or cross-threaded reducing union can cause hydraulic pressure loss or fluid leaks; replacing it with a genuine OEM part returns the circuit to its specified operating condition
- Genuine Bomag Part — supplied under part number 05542324 with full OEM traceability, so you order with confidence that the component matches the original
A reducing union is a threaded hydraulic or fluid-line fitting that connects two lines of different diameters, stepping the bore down from a larger port to a smaller one within a sealed circuit. On tandem rollers and cold milling machines, these fittings are used throughout the hydraulic, water, and fuel systems to route fluid between components of varying port sizes while maintaining a pressure-tight seal. When a reducing union develops a leak, cracks at the threads, or corrodes internally, it can cause pressure drop, fluid contamination, or uncontrolled fluid loss — any of which will degrade machine performance and may require a shutdown until the fitting is replaced.
Part Details
| Part Number | 05542324 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Reducing Union |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Tandem Roller | BW 131 ACW-2 | 00817468 |
| Tandem Roller | BW 131 AD-2 | 00817469 |
| Tandem Roller | BW 115 AC-3 | 00818693 |
| Tandem Roller | BW 115 AD-3 | 00818695 |
| Tandem Roller | BW 131 ACW-3 | 00818697 |
| Tandem Roller | BW 131 AD-3 | 00818699 |
| Tandem Roller | BW 115 AC-5 | 00824933 |
| Tandem Roller | BW 131 AD-5 | 00824935 |
| Tandem Roller | BW 131 ACW-5 | 00824937 |
| Cold Milling Machine | BM 500/15 Stage V | 00825885 |
| Cold Milling Machine | BM 600/15 Stage V | 00825887 |
| Cold Milling Machine | BM 500/15-2 | 00826459 |
| Cold Milling Machine | BM 600/15-2 | 00826479 |
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.
