The Bomag 05540021 Double-Ended Union is a genuine OEM hydraulic fitting designed for a broad range of Bomag pavers, single drum rollers, tandem rollers, refuse and landfill compactors, soil compactors, and cold milling machines. As a direct OEM replacement, this union delivers the exact thread form, sealing geometry, and pressure rating required by Bomag's hydraulic and fluid systems. This fitting is confirmed to fit models including BF 800 C S600, BW 213 D, BW 177 D-5, BC 771 RB, and BM 1000/35, among many others across the Bomag lineup.
Key Features
- Genuine OEM Hydraulic Integrity — manufactured to Bomag's exact thread specification and pressure tolerance, ensuring leak-free performance in high-demand hydraulic circuits
- Drop-In Replacement Fit — matches the original port geometry on both connection ends, threading directly into existing hydraulic lines without rework or adapters
- Broad Bomag Fleet Coverage — fits a wide range of Bomag equipment including BF-series pavers, BW tandem and single drum rollers, BC refuse and landfill compactors, BC soil compactors, and BM cold milling machines
- Leak Prevention at the Source — a correctly seated double-ended union maintains closed-circuit hydraulic pressure; a worn or damaged union risks fluid loss, pressure drop, and system contamination
- Fuel and Fluid System Safety — proper hydraulic and fluid line integrity is essential to safe machine operation; using the correct OEM union eliminates the risk of fitting mismatch that can lead to line failure under pressure
A double-ended union is a straight-through hydraulic or fluid line connector that joins two threaded line ends into a single sealed passage. It allows sections of plumbing to be connected, disconnected, and reassembled without disturbing the surrounding circuit, making it a critical service point in complex hydraulic systems. When this fitting corrodes, cross-threads, or loses its seal, hydraulic fluid can escape under pressure — causing system pressure loss, contamination of surrounding components, and potential machine shutdown until the connection is restored.
Part Details
| Part Number | 05540021 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Double-Ended Union |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Paver | BF 800 C S500 | 00800677, 00800679, 00800827, 00800871 |
| Paver | BF 800 C S600 | 00800681, 00800683, 00800779, 00800829, 00800851, 00800873, 00824541 |
| Paver | BF 800 P S500 | 00800685, 00800687, 00800831, 00800879 |
| Paver | BF 800 C S600 SOIL | 00800745 |
| Paver | BF 900 C S500 | 00800753, 00800787 |
| Paver | BF 900 C S600 | 00800771, 00800783 |
| Paver | BF 600 C-2 S 500 | 00800791, 00800907, 00824199, 00824485, 00824489 |
| Paver | BF 700 C-2 S 600 | 00800797, 00800867, 00824491 |
| Paver | BF 700 C-2 S 500 | 00800799, 00800869, 00800899, 00824493 |
| Paver | BF 900 C S600-4i | 00800921 |
| Paver | BF 800 C S600-4i | 00800925, 00824211 |
| Paver | BF 800 P S600-4i | 00800929, 00824219 |
| Paver | BF 800 C S600-T3 | 00800939 |
| Paver | BF 900 C S600-T3 | 00800943 |
| Single Drum Roller | BW 213 D | 00810062, 00814209 |
| Single Drum Roller | BW 142 D-2 | 00810077 |
| Single Drum Roller | BW 212 D-2 | 00810687 |
| Tandem Roller | BW 184 AD | 00810713, 00810715, 00817514 |
| Single Drum Roller | BW 177 D-3 | 00815310, 00817503 |
| Single Drum Roller | BW 216 D-3 | 00815340, 00817214, 00817535 |
| Single Drum Roller | BW 178 D-3 | 00815515 |
| Refuse / Landfill Compactor | BC 601 RS | 00816000 |
| 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 601 RB | 00816009, 00816010, 00816011, 00816012, 00816013 |
| 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 |
| Tandem Roller | BW 141 AD-2 | 00817474 |
| Tandem Roller | BW 144 AD-2 | 00817477, 00817478 |
| Single Drum Roller | BW 145 D-3 | 00817479, 00817637 |
| Single Drum Roller | BW 145 DH-3 | 00817481, 00817638 |
| Single Drum Roller | BW 145 PDH-3 | 00817483, 00817639 |
| Tandem Roller | BW 151 AC-2 | 00817485 |
| Tandem Roller | BW 151 AD-2 | 00817486 |
| Tandem Roller | BW 154 AD-2 | 00817490, 00817491, 00817599 |
| Tandem Roller | BW 161 AC-2 | 00817492 |
| Tandem Roller | BW 161 AD-2 | 00817493, 00817494 |
| Tandem Roller | BW 164 AC-2 | 00817495 |
| Tandem Roller | BW 170 AD | 00817498 |
| Tandem Roller | BW 174 AC | 00817499 |
| Tandem Roller | BW 174 AC AM | 00817500 |
| Tandem Roller | BW 174 AD | 00817501 |
| Tandem Roller | BW 174 AD AM | 00817502 |
| Tandem Roller | BW 180 AD | 00817513 |
| Tandem Roller | BW 202 AD-2 | 00817516, 00817517 |
| Tandem Roller | BW 202 AHD-2 | 00817518 |
| Single Drum Roller | BW 213 DH-3 | 00817527, 00817528 |
| Single Drum Roller | BW 216 DH-3 | 00817537 |
| Tandem Roller | BW141AD 2 | 00817573 |
| Single Drum Roller | BW145D 3 | 00817576, 00817927 |
| Single Drum Roller | BW145PDH 3 | 00817577 |
| Single Drum Roller | C 825 C | 00817578 |
| Single Drum Roller | BW177D-3 | 00817586 |
| Single Drum Roller | BW 213 DH 3 VARIOCONTOL | 00817591, 00817605 |
| Tandem Roller | BW 184 AD-2 AM | 00817600 |
| Tandem Roller | BW 164 AD-2 | 00817640 |
| Tandem Roller | BW 161 AD-4 | 00817641, 00818481, 00818959, 00824003, 00824735 |
| Tandem Roller | BW 202 AD-4 | 00817642, 00818381, 00818961, 00824005 |
| Single Drum Roller | BW 216 DHC-3 | 00817643 |
| Single Drum Roller | BW 177 D-3 USA | 00817675 |
| Tandem Roller | BW 174 AD-2 AM | 00817693 |
| Tandem Roller | BW 174 AD-2 | 00817695 |
| Tandem Roller | BW 141 AD-4 | 00817697, 00818561, 00818955, 00818999 |
| Tandem Roller | BW 154 AD-4 AM | 00817699, 00818447 |
| Tandem Roller | BW 174 AC-2 | 00817712 |
| Tandem Roller | BW 174 AC-2 AM | 00817714 |
| Tandem Roller | BW 170 AD-2 AM | 00817716 |
| Tandem Roller | BW 161 ADH-4 | 00817739 |
| Single Drum Roller | BW 177 DH-4 | 00817761, 00817765, 00818453, 00818543, 00824037, 00824133 |
| Single Drum Roller | BW 177 PDH-4 | 00817763, 00818541 |
| Single Drum Roller | BW 179 DH-4 | 00817767, 00818545, 00824137 |
| Single Drum Roller | BW 179 PDH-4 | 00817769, 00818549, 00824139 |
| Tandem Roller | BW 190 AD-4 | 00817823, 00818379, 00818965, 00824009 |
| Tandem Roller | BW 190 AD-4 AM | 00817825, 00818309, 00824021 |
| Tandem Roller | BW 203 AD-4 AM | 00817837, 00818591, 00824019, 00825067 |
| Tandem Roller | BW 184 AD-2 | 00817841 |
| Tandem Roller | BW151AD 4 | 00817843 |
| Single Drum Roller | BW177D 3 | 00817863 |
| Tandem Roller | BW 154 AD-4 | 00817901, 00818557 |
| Tandem Roller | BW 151 AD-4 AM | 00817913, 00818555, 00824017 |
| Tandem Roller | BW 141 AD-4 AM | 00817925, 00818553 |
| Single Drum Roller | BW 145-DH-3 | 00817929 |
| Tandem Roller | BW 161 AC-4 | 00817947, 00818589, 00818967 |
| Tandem Roller | BW 151 AC-4 AM | 00817953, 00818559, 00824025 |
| Single Drum Roller | BW 179 DHC-4 | 00818033, 00818547 |
| Single Drum Roller | BW 177 DHC-4 | 00818035, 00818455 |
| Refuse / Landfill Compactor | BC 1172 RB-3 | 00818153 |
| Single Drum Roller | BW 177 D-40 | 00818165, 00818525 |
| 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 |
| Single Drum Roller | BW 177 PDHC-4 | 00818283, 00818539 |
| Single Drum Roller | BW 179 PDHC-4 | 00818285 |
| Tandem Roller | BW 154 AP-4 AM | 00818299, 00824177, 00824715 |
| Tandem Roller | BW 154 AP-4 | 00818301, 00824179, 00824717 |
| Tandem Roller | BW 154 ACP-4 AM | 00818303, 00824719 |
| Tandem Roller | BW 154 ACP-4 | 00818305, 00824721 |
| Single Drum Roller | BW145DH 40 | 00818323, 00818939, 00818941 |
| Single Drum Roller | BW 145 DH 40 BW 145 DH 4 | 00818325 |
| Single Drum Roller | BW 145 PDH 40 BW145 PDH 4 | 00818327 |
| Tandem Roller | BW 174 AP-AM | 00818343, 00818537 |
| Tandem Roller | BW 174 ACP-AM | 00818355, 00818535 |
| Tandem Roller | BW 161 ADH-4 CHINA | 00818365 |
| Tandem Roller | BW 174 AP | 00818395, 00818517 |
| Single Drum Roller | BW 177 D-4 | 00818451 |
| Tandem Roller | BW 170 AP AM | 00818515 |
| Tandem Roller | BW 174 ACP | 00818519 |
| Tandem Roller | BW 151 AD-4 | 00818563, 00818957, 00824001 |
| Tandem Roller | BW 151 AC-4 | 00818565, 00819699, 00824011 |
| Single Drum Roller | BW177D 40 | 00818579 |
| Tandem Roller | BW 203 AD-4 | 00818599, 00818963 |
| Tandem Roller | BW 174 AP-4 AM | 00818655, 00818845, 00824543 |
| Tandem Roller | BW 174 AP-4 | 00818657, 00818847, 00824545 |
| Tandem Roller | BW 138 AC-5 | 00818719, 00824923, 00824929, 00825561 |
| Tandem Roller | BW 138 AD-5 | 00818721, 00824175, 00824921, 00824927, 00825351, 00825559 |
| Tandem Roller | BW 135 AD-5 | 00818723, 00824931, 00825355, 00825563 |
| Single Drum Roller | BW145D 40 | 00818935, 00818937 |
| Single Drum Roller | BW145PDH 40 | 00818943 |
| Tandem Roller | BW 174 AP-4 AM PB | 00818971 |
| Tandem Roller | BW 174 AP-4 PB | 00818973 |
| Tandem Roller | BW 141 AD-5 | 00824049 |
| Tandem Roller | BW 154 AD-5 | 00824053 |
| Tandem Roller | BW 151 AD-5 AM | 00824055 |
| Tandem Roller | BW 141 AD-50 | 00824059 |
| Refuse / Landfill Compactor | BC 972 RB-3 | 00824085 |
| Single Drum Roller | BW 177 D-50 | 00824087 |
| Tandem Roller | BW 174 AP-4i AM | 00824093, 00824627, 00825051 |
| Tandem Roller | BW 174 AP-4i | 00824095, 00824629, 00825053 |
| Refuse / Landfill Compactor | BC 772 RB-3 | 00824101 |
| Tandem Roller | BW 202 AD-50 | 00824113 |
| Paver | BF 700 C S500 | 00824207 |
| Paver | BF 800 P S500-4i | 00824217 |
| Cold Milling Machine | BM 1000/35 | 00824229, 00824569, 00824795 |
| Refuse / Landfill Compactor | BC 672 RB-3 | 00824259 |
| Tandem Roller | BW 161 ADO-4 | 00824333, 00824335 |
| Refuse / Landfill Compactor | BC 772 RS-3 | 00824349 |
| Single Drum Roller | BW 177 D-5 | 00824351, 00824913, 00824915, 00825433, 00825725, 00825839, 00826625, 00826773 |
| Refuse / Landfill Compactor | BC 772 RB-4 | 00824355 |
| Single Drum Roller | BW 145 D-5 | 00824357, 00825003, 00825427, 00825837, 00826053, 00826623, 00826771 |
| Tandem Roller | BW 154 AP-4i AM | 00824385 |
| Tandem Roller | BW 161 AD-4 EU-Flex | 00824393 |
| Tandem Roller | BW 202 AD-4 EU-Flex | 00824395 |
| Tandem Roller | BW 203 AD-4 AM EU-Flex | 00824397 |
| Paver | BF 600 C-2 S 600 | 00824487, 00825903 |
| Refuse / Landfill Compactor | BC 473 RB-4 | 00824525 |
| Refuse / Landfill Compactor | BC 473 RS-4 | 00824527 |
| Refuse / Landfill Compactor | BC 772 RS-4 | 00824529 |
| Refuse / Landfill Compactor | BC 672 RB-4 | 00824531 |
| Cold Milling Machine | BM 1200/35 | 00824533, 00824631, 00824797 |
| Cold Milling Machine | BM 1300/35 | 00824535, 00824633, 00824799 |
| Tandem Roller | BW 154 AP-4i | 00824587 |
| Tandem Roller | BW 154 ACP-4i AM | 00824589, 00825383 |
| Tandem Roller | BW203AD-4 | 00824739, 00826243 |
| Soil Compactor | BC 473 EB-4 | 00824855 |
| Soil Compactor | BC 772 EB-4 | 00824857 |
| Tandem Roller | BW 205 AD 4 | 00824889 |
| Tandem Roller | BW 174 AP-4f AM | 00824909 |
| Tandem Roller | BW 174 AP-4f | 00824911 |
| Tandem Roller | BW 203 ADO-4 | 00825049 |
| Tandem Roller | BW 174 APO-4i | 00825099 |
| Tandem Roller | BW 174 ACP 4I AM | 00825103 |
| Cold Milling Machine | BM 1200/35 T4f | 00825167 |
| Cold Milling Machine | BM 1300/35 T4f | 00825169 |
| Tandem Roller | BW 174 AP-4v AM | 00825819 |
| Tandem Roller | BW 174 APO-4f | 00826149 |
| Paver | BF 700 C-3 S 500 | 00826351 |
| Paver | BF 800 C-3 S 600 | 00826407 |
| Cold Milling Machine | BM 1000/35-2 | 00826457 |
| Cold Milling Machine | BM1200/35-2 | 00826485 |
| Cold Milling Machine | BM1000/35-2 | 00826489 |
| Single Drum Roller | BW 145 D-5 PL | 00827061, 00827069 |
| Single Drum Roller | BW 177 D-5 PL | 00827081, 00827083, 00827087, 00827375 |
| Paver | BF 700 C-3 S 600 | 00827127 |
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.
