Wacker Neuson 5000078336 Flexshaft Core Sm7S

The Wacker Neuson Flexshaft Core Sm7S is a genuine OEM component designed for the M2000, M3000, A5000, A1500, L5000, and D4000 series electrical, gasoline, and diesel power units used with internal concrete vibrators. As a direct OEM part, is manufactured to the exact tolerances required for smooth, low-vibration power transfer from the drive unit to the vibrator head. This part fits a wide range of Wacker Neuson internal vibrator power units across multiple voltage and configuration variants, making it one of the most broadly compatible flexshaft cores in the lineup. Sourcing the correct OEM core ensures the flexshaft assembly operates at full efficiency without premature wear on the casing or vibrator head.

Key Features

• OEM Torque Transmission Integrity — Manufactured to exact OEM rotational and flexibility specifications, ensuring consistent power delivery from the drive unit to the vibrator head without energy loss or torsional lag.
• Drop-In Core Replacement — Engineered to seat correctly within the Sm7S flexshaft casing, allowing straightforward core swap without modifications to the outer housing or drive coupling.
• Broad Power Unit Compatibility — Confirmed fitment across M2000, M3000, A5000, A1500, L5000, and D4000 series internal vibrator power units, covering electric, gasoline, and diesel drive configurations.
• Sustained Vibration Output — A worn or kinked flexshaft core causes erratic vibrator head speed and reduced concrete consolidation; replacing with this OEM core restores full and consistent vibration frequency.
• Genuine Wacker Neuson Part — Supplied as an authentic Wacker Neuson OEM component under part number 5000078336, meeting the same material and dimensional standards as the original production part.

The flexshaft core is the inner rotating element of a flexible drive shaft assembly, transmitting rotational power from the power unit motor to the vibrator head inserted into fresh concrete. It works inside a protective outer casing and must maintain consistent flexibility and tensile strength along its entire length to deliver steady, high-frequency vibration. When the core wears, kinks, or breaks, the vibrator head loses speed or stops rotating entirely, compromising concrete consolidation and requiring immediate replacement to keep pours on schedule.

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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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.

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