Bomag 05542283 Reducing Union

The Bomag 05542283 Reducing Union is a genuine OEM component designed for a wide range of Bomag pavers, cold milling machines, tandem rollers, pneumatic tyred rollers, walk-behind rollers, single drum rollers, recyclers/stabilizers, soil compactors, and refuse/landfill compactors. As a direct OEM replacement sourced through Bomag's parts program, this reducing union meets the same specifications as the original unit installed at the factory. It is confirmed to fit models including BF 600 P-3 S 500 and BF 800 C-3 S 600 pavers, BM 1000/35 and BM 2000/75 cold milling machines, BW 120 AD-5 and BW 161 AD-5 tandem rollers, and many additional machines across the Bomag lineup.

Key Features

• OEM-Grade Hydraulic Integrity — manufactured to Bomag's original specifications, ensuring correct thread form, bore sizing, and pressure rating for hydraulic or fluid line connections on this part's intended applications.
• Drop-In Replacement — matches the original port sizes and thread type of part number 05542283, allowing direct installation without modification to existing line fittings or mounting points.
• Broad Bomag Fitment — fits an extensive range of Bomag equipment, including BF-series pavers such as the BF 300 C and BF 900 C S600, BM-series cold milling machines including the BM 2500/75, BW tandem and pneumatic tyred rollers, MPH and RS recyclers/stabilizers, and BC-series compactors.
• Leak-Free Fluid Routing — a correctly sized reducing union maintains sealed, efficient fluid transfer between lines of different diameters; a worn, cracked, or incorrect fitting causes pressure loss, fluid leaks, and degraded system performance.
• Fluid System Safety — using the correct OEM union prevents mismatched connections that can result in hydraulic or fuel line failures, protecting both the operator and the machine during operation.

A reducing union is a threaded fitting that connects two fluid lines of different diameters within a hydraulic, fuel, or coolant circuit, allowing flow to transition smoothly between pipe or hose sizes without pressure drop or leakage. It serves as a critical junction point in the machine's fluid routing system — if the union corrodes, cracks, or is replaced with an incorrectly sized fitting, it can cause leaks, system pressure loss, or complete circuit failure. Keeping this component in good condition is essential to maintaining consistent fluid delivery across the machine's operating systems.

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.