The Bomag 05543231 Reducing Union is a genuine OEM fitting designed for Bomag BW 177, BW 212, and BW 213 series single drum rollers, as well as the C 850 C single drum roller. Sourced directly from Bomag, this reducing union meets the original design specification for a secure, leak-free hydraulic or fluid line connection. This component covers an extensive range of BW-series variants including the BW 177 D-3, BW 177 DH-3, BW 177 PDH-3, BW 178 D-3, BW 212 D-3, BW 213 D-3, BW 213 DH-3, BW 213 PDH-3, BW 214 DH-3, and their USA-market counterparts. Ordering by part number 05543231 ensures you receive the correct fitting for your machine without guesswork.
Key Features
- Genuine OEM Integrity — manufactured to Bomag's original material and dimensional specification, ensuring correct thread form, taper, and pressure rating for this hydraulic line application
- Direct Drop-In Replacement — threads and port sizing match the original connection points on BW-series single drum rollers, allowing straightforward installation without reworking the surrounding plumbing
- Broad Series Coverage — fits BW 177, BW 178, BW 212, BW 213, and BW 214 single drum rollers across D, DH, and PDH variants, including USA-spec machines and the C 850 C, all confirmed under part number 05543231
- Leak-Free Fluid Routing — a properly seated reducing union maintains system pressure and prevents fluid loss that can cause erratic compaction performance or hydraulic system damage on the roller
A reducing union is a hydraulic or fluid line fitting that connects two lines or ports of different diameters, allowing fluid to transition between sizes within the system while maintaining a sealed, pressure-rated flow path. On Bomag single drum rollers, fittings like this reducing union play a critical role in keeping hydraulic circuits properly routed and sealed — a failed or leaking union can cause pressure drop, fluid contamination, or loss of drive and vibration system function. Replacing a worn or damaged union promptly with the correct OEM part protects the integrity of the entire hydraulic circuit.
Part Details
| Part Number | 05543231 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Reducing Union |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Single Drum Roller | BW 177 D-3 | 00815310, 00817503 |
| Single Drum Roller | BW 213 D-3 | 00815320, 00815329, 00815390, 00817522, 00817523 |
| Single Drum Roller | BW 213 DH-3 | 00815322, 00817526, 00817527, 00817528, 00817589 |
| Single Drum Roller | BW 212 D-3 | 00815325, 00815326 |
| Single Drum Roller | BW 178 D-3 | 00815515 |
| Single Drum Roller | BW 177 DH-3 | 00817505, 00817751 |
| Single Drum Roller | BW 177 DH 3 | 00817506 |
| Single Drum Roller | BW 177 PDH-3 | 00817508 |
| Single Drum Roller | BW212D 3 | 00817521 |
| Single Drum Roller | BW 213 PDH-3 | 00817529, 00817530, 00817590 |
| Single Drum Roller | BW 214 DH-3 | 00817532, 00817592 |
| Single Drum Roller | BW177PDH 3 | 00817579 |
| Single Drum Roller | BW177DH-3 | 00817580 |
| Single Drum Roller | C 850 C | 00817583 |
| Single Drum Roller | BW177D-3 | 00817586 |
| Single Drum Roller | BW 213 DH 3 VARIOCONTOL | 00817591, 00817605 |
| Single Drum Roller | BW 213 DH-3 USA | 00817671 |
| Single Drum Roller | BW 213 PDH-3 USA | 00817673 |
| Single Drum Roller | BW 177 D-3 USA | 00817675 |
| Single Drum Roller | BW 177 DH-3 USA | 00817677 |
| Single Drum Roller | BW 177 PDH-3 USA | 00817679 |
| Single Drum Roller | BW177D 3 | 00817863 |
| Single Drum Roller | BW177DH 3 | 00817865 |
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.
