Bomag 05542282 Reducing Union

The Bomag 05542282 Reducing Union is a genuine OEM component designed for a wide range of Bomag pavers, single drum rollers, pneumatic tyred rollers, cold milling machines, refuse and landfill compactors, soil compactors, and recycler/stabilizers. As a direct OEM replacement, this reducing union is manufactured to Bomag's original specifications, ensuring a correct, secure connection within the hydraulic or fluid system. Compatible models include BF-series pavers such as the BF 300 P, BF 600 P-3 S 500, BF 800 C S600, and BF 900 C S600, BW-series single drum rollers including the BW 213 D-4, BW 219 DH-4i, and BW 226 DH-4i, cold milling machines including the BM 1200/30 and BM 1300/30, and recycler/stabilizer models including the MPH 121, MPH 122, MPH 125, MPH 600, and RS 650. Verify your model against part number 05542282 before ordering to confirm fitment.

Key Features

• Genuine OEM Fluid System Integrity — sourced directly from Bomag, this reducing union meets the original pressure ratings and thread specifications required for a leak-free hydraulic or fluid line connection.
• Drop-In Replacement Fit — matches the original union geometry and port sizing so this part installs directly into the existing line routing without rework or adapter fittings.
• Broad Cross-Family Coverage — fits Bomag BF pavers, BW single drum and pneumatic tyred rollers, BM cold milling machines, BC refuse/landfill compactors and soil compactors, and MPH and RS recycler/stabilizer models, including the BW 226 DH-4i, BF 800 C-3 S 600, and MPH 600 EU-FLEX.
• Sustained Flow Path Performance — a correctly seated reducing union maintains consistent fluid flow between differing line sizes; a worn or improperly sized union can cause pressure loss, leaks, and downstream component damage.
• Fuel and Hydraulic System Safety — proper sealing at every union joint is critical to preventing fluid release near hot engine and drivetrain components, making OEM-spec replacement the correct choice for this fitting.

A reducing union is a threaded fitting that connects two fluid lines of different diameters within a hydraulic, fuel, or cooling circuit, allowing fluid to transition between line sizes without loss of pressure integrity. It acts as the junction point where a larger-bore line steps down to a smaller one, and a secure, correctly torqued connection at this fitting is essential for maintaining system pressure and preventing leaks. When a reducing union fails — through thread wear, corrosion, or cracking — it can cause fluid loss, pressure drop across the circuit, and potential contamination of surrounding components, making timely replacement with the correct OEM part critical to keeping the machine in safe working condition.

Part Details

Compatibility & Fitment

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.