The Bomag 05543200 Reducing Union is a genuine OEM component designed for the BW 135 AD tandem roller. Sourced directly from Bomag, this reducing union delivers an exact match to the original part in thread specification, bore size, and material grade — ensuring a correct, leak-free connection in the hydraulic or fluid line where it is installed. This part is confirmed to fit the BW 135 AD tandem roller, making it the straightforward choice when servicing or restoring this machine's fluid routing system.
Key Features
- Genuine OEM Thread and Bore Accuracy — manufactured to Bomag's original specifications, so port threads and bore diameter match the mating fittings exactly, eliminating the risk of cross-threading or restricted flow
- Drop-In Hydraulic Line Replacement — this reducing union installs directly into the existing fluid line ports of the BW 135 AD with no modification to surrounding hardware or hose ends
- Confirmed Fit for the BW 135 AD Tandem Roller — fitment is verified against Bomag's OEM parts catalog for the BW 135 AD, so you can order with confidence
- Leak-Free Fluid Integrity — a correctly seated reducing union maintains sealed, pressurized flow between lines of differing diameters; a failed or improperly sized union causes fluid leaks, pressure loss, and potential hydraulic system damage
- Durable Construction for Demanding Conditions — built from materials rated for the pressure and temperature cycles of compaction equipment, supporting long service life even under continuous operation
A reducing union is a threaded fitting that connects two fluid or hydraulic lines of different diameters, allowing pressurized fluid to pass from a larger line into a smaller one without requiring adapters or improvised solutions. In a tandem roller like the BW 135 AD, maintaining correct fluid routing is essential to consistent drum vibration, steering response, and overall hydraulic system performance. When a reducing union cracks, corrodes, or develops a leak, it disrupts system pressure and can lead to erratic machine behavior or component damage if left unaddressed.
Part Details
| Part Number | 05543200 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Reducing Union |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Tandem Roller | BW 135 AD | 00810120 |
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.
