Wacker Neuson 5000078332 Flexshaft Core Sm2S

The Wacker Neuson Flexshaft Core Sm2S is a genuine OEM component designed for the M1000, M2000, M3000, A1500, A5000, and L5000 series electrical and engine-driven power units used with internal concrete vibrators. As a genuine Wacker Neuson part, the is manufactured to the exact specifications of the original, ensuring proper fit and transmission of drive power through the flexible shaft assembly. This part is compatible across a wide range of M-series and A/L-series power unit configurations, including 120V, 230V, UL, RFI, ISO, and ANSI variants. Verify your power unit model number before ordering to confirm the correct flexshaft core size for your application.

Key Features

• OEM-Matched Drive Specification — Wound to the exact core diameter and pitch required for Sm2S flexshaft assemblies, ensuring full rotational energy transfer to the vibrator head without slippage or premature wear.
• Direct Drop-In Replacement — Engineered to replace the original core within the existing flexshaft housing; no modification to the casing, fittings, or vibrator head connection is needed.
• Broad Power Unit Compatibility — Fits M1000, M2000, and M3000 electric power units across 120V, 230V, UL, RFI, and non-CUL configurations, as well as A1500, A5000, and L5000 engine-driven units in both ISO and ANSI versions.
• Sustained Vibrator Output — A worn or broken flexshaft core causes loss of vibration frequency at the head, leading to incomplete concrete consolidation; replacing the core restores consistent, full-frequency vibration output.
• Genuine Wacker Neuson Part — Sourced directly from Wacker Neuson, part number 5000078332 carries the same material and dimensional standards as the unit's original equipment.

The flexshaft core is the inner rotating element inside the flexible drive shaft that connects an internal concrete vibrator's power unit to its vibrator head. As the power unit spins, the core transmits that rotational force down through the flexible casing to drive the eccentric weight inside the vibrator head, generating the high-frequency vibration needed to consolidate fresh concrete. Over time, the core wire can fatigue, kink, or fracture from the repeated torsional stress and bending it experiences in normal use — once the core fails, vibration at the head stops entirely, stalling the pour and requiring immediate replacement to get back to work.

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.