Yamaha W5128041 Vibraphone Motor Belt (YV-1500 / YV-2700 / YV-2700G / YV-3000A)

The Yamaha W5128041 motor belt (also called vibraphone fan belt) is the genuine Yamaha drive belt that links the vibraphone’s motor unit to the resonator fans. This rotating fan system is what creates the trademark tremolo/vibrato effect on a vibraphone — without the belt, the fans don’t spin, and you get no vibrato.

This belt is specified by Yamaha for multiple vibraphone models, including the YV-1500, YV-2700, YV-2700G, and YV-3000A. 

It replaces worn, stretched, slipping, or broken belts in the vibraphone’s motor drive system so the resonator fans turn smoothly and at a stable speed. On instruments like the Yamaha YV-3000A (a professional 3-octave concert vibraphone with adjustable motor speed up to around 150 RPM), consistent belt tension is essential for even, musical modulation. 

This is an original Yamaha spare part. Yamaha spare parts can have extended lead times when out of stock. Please contact Ev-Entz Music for an estimated availability date before ordering. 

Key Features

• Genuine Yamaha OEM belt (W5128041)
  This is the official Yamaha vibraphone motor / fan belt, sold under Yamaha part number W5128041 (also listed by some retailers as OND-W5128041). Using an OEM belt ensures proper fit and correct tension on Yamaha vibraphones versus trying to improvise with a generic rubber ring. 

• Correct for multiple Yamaha vibraphones
  Yamaha specifies this belt for the YV-1500, YV-2700, YV-2700G, and YV-3000A. In listings it’s described simply as the “Yamaha motor belt” or “vibraphone fan belt” for these models. 

• Restores vibrato / tremolo
  The belt physically connects the vibraphone’s drive motor to the resonator fan shafts. That mechanical link is what spins the vanes in the resonators, opening and closing them and creating the characteristic pulsing shimmer. If the belt fails, you lose that effect entirely. 

• Smooth, stable speed
  A stretched or slipping belt can cause uneven fan rotation, wobble in the tremolo, or audible flutter. A fresh belt lets the motor deliver steady, controllable speed — important for ensemble work, pit work, and studio recording where you need consistent modulation. 

• Sold individually (check quantity)
  Yamaha and percussion dealers note that belts are sold individually. Some vendors also sell them in pairs. A typical Yamaha vibraphone setup may require two belts to fully couple the motor to both resonator sections, so check how many your frame uses before ordering. 

• Lead time notice
  Yamaha spare parts can have extended lead times when out of stock. Please contact Ev-Entz Music for an ETA before purchase. 

Why Choose This Part

When the belt wears out, several things happen:

• The resonator fans stop turning or only turn on one side, so there’s no true vibrato.

• The speed becomes uneven, which sounds like a wobble or dip in the shimmer.

• The motor can spin but not “grab,” which can lead to noise and stress on the mechanism.

Replacing the belt with the correct Yamaha W5128041 fixes all of that and gets your vibraphone sounding like a vibraphone again. 

This is especially important for Yamaha vibraphones with variable-speed motor control, like the YV-3000A, which uses a powered drive system to rotate the resonator fans at selectable speeds (roughly 25–150 RPM) for performance, recording, and concert work. 

For school percussion rooms, hire fleets, theatres, and pit orchestras, keeping a spare belt on hand is standard preventative maintenance — it’s small, inexpensive, and can prevent an entire vibraphone from becoming “dead flat” mid-show. 

Reminder: Yamaha spare parts can have extended lead times when out of stock. Please contact us for an estimated availability date. 

Specifications

• Part Name: Yamaha Vibraphone Motor Belt / Vibraphone Fan Belt

• Yamaha Part Code: W5128041 (also seen as OND-W5128041 in dealer listings) 

• Function: Connects the vibraphone’s motor to the resonator fan shafts, driving the rotating fans that create the tremolo/vibrato effect.

• Compatibility:

  • Yamaha YV-1500

  • Yamaha YV-2700

  • Yamaha YV-2700G

  • Yamaha YV-3000A 

• Material / Construction: Described by Yamaha dealers as a durable plastic / rubber belt designed specifically for Yamaha vibraphones. 

• Quantity Supplied: Sold as a single belt. Some suppliers offer 2-packs; many Yamaha frames require two belts per full resonator run, so order accordingly. 

• Use Case: Replacement for stretched, cracked, slipping, or snapped belts in Yamaha vibraphone motor systems. 

• Instrument Type: Concert vibraphone / mallet percussion. YV-2700 is a 3-octave Yamaha vibraphone; YV-3000A is a concert vibraphone with adjustable motorised resonator fans. 

• Manufacturer: Yamaha

• Stock / Lead Time: Yamaha spare parts can have extended lead times when out of stock. Please contact Ev-Entz Music for an ETA.