The Bomag 05542328 Reducing Union is a genuine OEM component designed for Bomag BC-series refuse/landfill compactors, BC-series soil compactors, and BM-series cold milling machines. Sourced directly from Bomag, this reducing union delivers an exact hydraulic or fluid-line connection that matches the original specification, ensuring a secure, leak-free installation. This part is compatible across a broad range of Bomag equipment, including BC 572 RB-2, BC 672 RB, BC 772 RB, BC 972 RB, BC 1172 RB, BC 772 EB-2, BC 772 EB-4, BM 1200/30, BM 1300/30, and additional BC and BM variants. When the time comes to restore fluid system integrity on your machine, this genuine OEM part is the correct replacement.
Key Features
- Genuine OEM Thread and Bore Accuracy — manufactured to Bomag's exact reducing union dimensions, ensuring proper thread engagement and full flow-path integrity with no risk of cross-thread or mismatched bore sizing
- Direct Drop-In Replacement — matches the original union's port sizing and thread pitch, allowing straightforward installation into the existing hydraulic or fluid circuit without rework
- Broad Fitment Coverage — compatible with BC-series refuse/landfill compactors (including BC 572 RB-2, BC 672 RB, BC 772 RB, BC 972 RB, BC 1172 RB, and generation -2, -3, and -4 variants), BC 772 EB-2 and BC 772 EB-4 soil compactors, and BM-series cold milling machines including BM 1200/30 and BM 1300/30
- Leak-Free Fluid System Performance — a correctly seated reducing union maintains system pressure and prevents fluid loss that can lead to overheating, erratic hydraulic response, or unplanned shutdowns
- Fuel and Hydraulic System Safety — a failed or deteriorated union fitting in a fuel or hydraulic line creates a fire and contamination risk; replacing with a genuine OEM part restores the safe, rated connection the system was designed around
A reducing union is a threaded fitting used to connect two fluid lines of different diameters within a hydraulic, fuel, or coolant circuit. It creates a sealed transition point that maintains consistent pressure and flow between lines of mismatched sizes. When a reducing union fails — through thread wear, cracking, or seal degradation — the affected circuit loses pressure, fluid escapes, and the machine may become unsafe or inoperable. Replacing a worn union promptly with part number 05542328 restores the circuit to its original operating condition and prevents damage to downstream components.
Part Details
| Part Number | 05542328 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Reducing Union |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Cold Milling Machine | BM1000/30-2 | 00800665 |
| Cold Milling Machine | BM1000 30-2 | 00800667 |
| Cold Milling Machine | BM1200 30-2 | 00800669, 00800671 |
| Cold Milling Machine | BM1300/30-2 | 00800673 |
| Cold Milling Machine | BM1300 30-2 | 00800675 |
| Refuse / Landfill Compactor | BC 670 RB | 00816001, 00816002, 00816003, 00816004 |
| Refuse / Landfill Compactor | BC 570 RB | 00816007 |
| Refuse / Landfill Compactor | BC 672 RB | 00816008, 00817909 |
| Refuse / Landfill Compactor | BC 771 RB | 00816025, 00817403 |
| Refuse / Landfill Compactor | BC 571 RB | 00816033, 00817400 |
| Refuse / Landfill Compactor | BC 671 RS | 00816304, 00817402 |
| Refuse / Landfill Compactor | BC 671 RB | 00817401 |
| Refuse / Landfill Compactor | BC 771 RS | 00817405 |
| Refuse / Landfill Compactor | BC 772 RB | 00817406 |
| Refuse / Landfill Compactor | BC 772 RS | 00817407 |
| Refuse / Landfill Compactor | BC 972 RB | 00817408 |
| Refuse / Landfill Compactor | BC 1172 RB | 00817827 |
| Refuse / Landfill Compactor | BC 1172 RB-3 | 00818153 |
| Refuse / Landfill Compactor | BC 772 RB-2 | 00818179, 00818885, 00818933, 00824639 |
| Refuse / Landfill Compactor | BC 672 RB-2 | 00818181, 00818887, 00818931, 00824641 |
| Refuse / Landfill Compactor | BC 572 RB-2 | 00818183, 00818893, 00824257 |
| Refuse / Landfill Compactor | BC 772 RS-2 | 00818185, 00818895, 00824643 |
| Soil Compactor | BC 772 EB-2 | 00818187, 00818897 |
| Soil Compactor | BC 672 EB-2 | 00818189 |
| Refuse / Landfill Compactor | BC 972 RB-2 | 00818191, 00818701, 00818889 |
| Refuse / Landfill Compactor | BC 1172 RB-2 | 00818193, 00818703, 00818891 |
| Cold Milling Machine | BM1300/30-T3 | 00818425 |
| Cold Milling Machine | BM1200/30-T3 | 00818427 |
| Refuse / Landfill Compactor | BC 972 RB-3 | 00824085 |
| Refuse / Landfill Compactor | BC 772 RB-3 | 00824101 |
| Refuse / Landfill Compactor | BC 672 RB-3 | 00824259 |
| Refuse / Landfill Compactor | BC 772 RS-3 | 00824349 |
| Refuse / Landfill Compactor | BC 772 RB-4 | 00824355 |
| Refuse / Landfill Compactor | BC 772 RS-4 | 00824529 |
| Refuse / Landfill Compactor | BC 672 RB-4 | 00824531 |
| Soil Compactor | BC 772 EB-4 | 00824857 |
| Refuse / Landfill Compactor | BC 972 RB-4 | 00824899 |
| Refuse / Landfill Compactor | BC 1172 RB-4 | 00824901 |
| Cold Milling Machine | BM 1200/30 | 00824963 |
| Cold Milling Machine | BM 1300/30 | 00824965, 00825095 |
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.
