The Bomag 05579056 Double-Ended Union is a genuine OEM hydraulic fitting designed for Bomag BC-series refuse/landfill compactors, BC-series soil compactors, and RS-series recyclers/stabilizers. Sourced directly from Bomag, this union delivers the exact thread form, seat geometry, and material grade specified for the original hydraulic circuit. Confirmed fitment spans a broad range of machines, including the BC 571 RB, BC 671 RB, BC 672 RB, BC 771 RB, BC 772 RB, BC 972 RB, BC 1172 RB, BC 772 EB-2, BC 672 EB-2, BC 772 RS, RS 460, RS 500, and RS460 STAGE V, among others across multiple generation variants.
Key Features
- Genuine OEM Thread and Seat Accuracy — manufactured to Bomag's exact thread specification and seating angle, ensuring a leak-free hydraulic connection without re-machining or adapters
- Direct Drop-In Replacement — matches the original fitting's end configurations and port sizing so this union installs directly into the existing hydraulic lines
- Broad BC-Series and RS-Series Coverage — fits Bomag BC-series refuse/landfill compactors, BC-series soil compactors, and RS-series recyclers/stabilizers across generations including RB, RS, and EB variants
- Hydraulic Circuit Integrity — a correctly seated double-ended union maintains rated system pressure across both ports; a worn or damaged union risks hydraulic fluid loss, pressure drop, and loss of compaction force
- OEM Part Number Traceability — carries Bomag part number 05579056 for straightforward reordering and parts-record accuracy on fleet equipment
A double-ended union is a straight-through hydraulic fitting that joins two fluid lines end to end, allowing the hydraulic circuit to be completed, extended, or serviced without altering the surrounding plumbing. It seals both connections against system pressure, maintaining uninterrupted flow of hydraulic fluid to pumps, motors, and cylinders. When a union fails — through cracking, thread damage, or seal-face wear — hydraulic fluid leaks at the joint, system pressure drops, and the machine's working functions lose power or responsiveness, making prompt replacement essential to restoring full operation.
Part Details
| Part Number | 05579056 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Double-Ended Union |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| 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 RB | 00817401 |
| Refuse / Landfill Compactor | BC 671 RS | 00817402 |
| 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 |
| 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 |
| Recycler / Stabilizer | RS 500 | 00824753, 00824755 |
| Recycler / Stabilizer | RS 460 | 00824809, 00825187, 00825189 |
| Soil Compactor | BC 772 EB-4 | 00824857 |
| Refuse / Landfill Compactor | BC 972 RB-4 | 00824899 |
| Refuse / Landfill Compactor | BC 1172 RB-4 | 00824901 |
| Recycler / Stabilizer | RS460 STAGE V | 00825263 |
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.
