Bomag 05542297 Reducing Union

The Bomag 05542297 Reducing Union is a genuine OEM component designed for a wide range of Bomag pavers, refuse and landfill compactors, soil compactors, tandem rollers, single drum rollers, pneumatic tyred rollers, recyclers/stabilizers, and cold milling machines. As a direct OEM replacement, this reducing union is sourced from Bomag's authorized parts supply chain, ensuring the correct dimensions and material specification for the hydraulic or fluid systems it serves. Compatible models span the BF 300 P, BF 600, BF 700, BF 800, and BF 900 paver lines, alongside BC-series compactors including the BC 672 RB, BC 772 RB, BC 972 RB, and BC 1172 RB refuse/landfill compactors, as well as BC 672 EB-2 and BC 772 EB-2 soil compactors, BW 161 and BW 190 tandem rollers, the BW 332 single drum roller, the BW 11 RH-5 pneumatic tyred roller, MPH and RS-series recyclers/stabilizers, and BM-series cold milling machines. Ordering by part number 05542297 ensures you receive the exact Bomag-specified union with no guesswork on fit or sizing.

Key Features

• Genuine OEM Fluid-System Integrity — machined to Bomag's exact bore and thread specifications, this reducing union maintains correct flow path geometry and leak-free sealing in the hydraulic or fluid circuit it connects.
• Drop-In Thread and Port Compatibility — engineered to match the original port sizing and thread form on each covered machine, allowing direct installation without reworking fittings or lines.
• Broad Cross-Fleet Coverage — fits BF-series pavers (BF 300 P through BF 900 C), BC-series refuse/landfill and soil compactors, BW tandem and single drum rollers, MPH and RS recyclers/stabilizers, and BM cold milling machines, making it a versatile stocking part for mixed Bomag fleets.
• Leak-Free System Pressure Retention — a correctly fitted reducing union prevents pressure drop and fluid loss at transition points between different line diameters; a worn or improperly sized union can cause hydraulic inefficiency, fluid contamination, or system failure.

A reducing union is a plumbing or hydraulic fitting that connects two lines of different diameters within a fluid circuit, allowing flow to transition smoothly between pipe or hose sizes without turbulence-inducing adapters or stepped losses. In heavy construction equipment like pavers, compactors, and milling machines, these unions appear in hydraulic, cooling, and fuel systems wherever line sizes change between components. When a reducing union fails — through thread wear, corrosion, or cracking — the fluid circuit loses sealing integrity, leading to leaks, pressure drop, and potential damage to downstream components. Replacing a worn union promptly with the correct OEM part keeps the fluid system operating at its designed pressure and flow rate.

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.