Bomag 05542327 Reducing Union

The Bomag 05542327 Reducing Union is a genuine OEM component designed for Bomag BM-series cold milling machines and BC-series soil and refuse/landfill compactors. Sourced directly from Bomag, this reducing union delivers an exact hydraulic or fluid-line connection match for the machines it serves — no rework, no adaptation. This part is confirmed for fitment across a broad range of Bomag equipment, including the BM 1200/30, BM 1300/30, BM 2000/75, BM 2500/75, BC 462 EB, BC 772 EB-2, BC 772 EB-4, BC 672 EB-2, BC 972 RB, BC 972 RB-2, BC 972 RB-3, BC 972 RB-4, BC 1172 RB, BC 1172 RB-2, BC 1172 RB-3, BC 1172 RB-4, and additional cold milling machine variants. Being a genuine OEM part, part number 05542327 carries Bomag's original material and dimensional specifications, ensuring the fluid system performs as engineered from day one.

Key Features

• Genuine OEM Construction — manufactured to Bomag's original dimensional and material specifications, ensuring the correct thread form, sealing surface, and pressure rating for hydraulic and fluid-line circuits on heavy equipment
• Drop-In Fitment — connects directly to existing fluid lines without reworking fittings or adapters, maintaining the integrity of the original plumbing layout
• Broad Model Coverage — fits BM-series cold milling machines including the BM 1200/30, BM 1300/30, BM 2000/75, and BM 2500/75, as well as BC-series refuse/landfill compactors and soil compactors such as the BC 972 RB and BC 772 EB-2
• Fluid System Integrity — a correctly rated reducing union maintains proper flow and pressure transition between lines of differing sizes; a worn or improperly sized union risks leaks, pressure loss, and component damage downstream
• Exact Part Number Match — ordering by Bomag part number 05542327 eliminates substitution risk and ensures the union you receive is the one specified in the Bomag parts catalog for your machine

A reducing union is a threaded hydraulic or fluid-line fitting that joins two lines or ports of different sizes, allowing fluid to transition smoothly from a larger-diameter circuit to a smaller one without introducing flow restriction or leak points. In heavy equipment such as cold milling machines and large compactors, these fittings are used throughout the hydraulic, cooling, and auxiliary fluid systems wherever line diameters change. When a reducing union fails — through thread wear, corrosion, or cracking — it can cause fluid leaks, pressure imbalances, or complete loss of circuit function, taking the machine out of service until the fitting is replaced with a correctly rated component.

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.