Bomag 05542292 Reducing Union

The Bomag 05542292 Reducing Union is a genuine OEM component designed for a broad range of Bomag pavers, rollers, cold milling machines, recyclers/stabilizers, compactors, and related equipment. As a direct OEM replacement sourced through Bomag's authorized parts program, this reducing union delivers an exact hydraulic line connection — no adaptation needed to match the original plumbing layout. Confirmed fitment spans the BF 300, BF 600, BF 700, BF 800, and BF 900 paver families, BW-series tandem rollers, single drum rollers, and pneumatic tyred rollers, BM 500, BM 600, BM 1000, BM 1200, BM 1300, BM 2000, BM 2200, and BM 2500 cold milling machines, MPH and RS recycler/stabilizer models, BC-series refuse/landfill and soil compactors, the BW 85 T trench compactor, the BP 50/55 HE vibratory plate, and the BC 670 RB and C 815 C machines, among many others across the fitment list.

Key Features

• Genuine OEM Hydraulic Integrity — manufactured to Bomag's original thread form, taper angle, and pressure rating, ensuring the union holds a leak-free seal under the operating pressures found in Bomag hydraulic circuits
• Direct Hydraulic Line Replacement — matches the original port sizes and thread specifications so this union threads directly into the existing fittings on the machine's hydraulic plumbing without rework
• Broad Cross-Equipment Compatibility — verified for BF-series pavers, BW tandem and single drum rollers, BM cold milling machines, MPH and RS recyclers/stabilizers, BC compactors, the BW 85 T trench compactor, and the BP 50/55 HE vibratory plate, covering a wide Bomag fleet with a single part number 05542292
• Leak-Free Flow Transition — steps hydraulic fluid between two different line diameters while maintaining full flow capacity, preventing pressure drop or cavitation that can damage pumps, motors, and downstream components
• Fuel and Hydraulic System Safety — a properly seated reducing union prevents fluid weeping near hot engine and exhaust surfaces, reducing fire and contamination risk on the equipment

A reducing union is a hydraulic or fluid-line fitting that connects two lines or ports of different diameters, allowing fluid to transition smoothly from a larger bore to a smaller bore — or vice versa — within the same circuit. On Bomag equipment, these fittings appear throughout the hydraulic drive, steering, and auxiliary circuits wherever a plumbing run changes line size. Replacing a failed union promptly with part number 05542292 restores the sealed, full-pressure circuit the machine's hydraulic system requires.

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.

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