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Maytronics Dolphin TT Drive Pulley | 3883645

Maytronics SKU: 3883645

Maytronics Dolphin TT Drive Pulley | 3883645

Maytronics SKU: 3883645
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Maytronics 3883645 Drive Pulley TT (Flat Shaft) for Dolphin Robotic Pool Cleaners | Genuine Replacement

The Maytronics 3883645 is a genuine Dolphin replacement drive pulley, commonly listed as Drive Pulley TT (also described by some sellers as a drive pulley bearing / TT flat shaft pulley). It is used in the cleaner’s drive system to support smooth pulley rotation and proper track/drive movement on compatible Maytronics Dolphin robotic pool cleaners.

Key Features

  • Part number: 3883645
  • Brand: Maytronics (Dolphin genuine part)
  • Product type: Drive pulley / TT flat shaft pulley (seller terminology may vary)
  • Common description: Drive Pulley TT / Pulley for Flat Shaft TT
  • OEM replacement part for compatible Dolphin robotic pool cleaners
  • Helps restore proper drive motion and smoother operation

What This Part Does

  • Supports the drive system by providing proper pulley rotation in compatible cleaners
  • Helps restore movement and traction performance when the original pulley is worn or damaged
  • Can reduce drivetrain strain caused by seized, cracked, or worn pulley components
  • Maintains OEM fit and function when matched to the correct cleaner model/version

Common Compatibility Notes (Verify Before Ordering)

  • Used on many Maytronics Dolphin robotic pool cleaner models (compatibility varies by model and production version)
  • Retailer listings commonly reference models/families such as Nautilus / Nautilus Plus, Triton / Triton Plus, M200 / M400, C3/C4/C5, Discovery, Saturn, and other Dolphin variants
  • Some listings also reference compatibility with certain branded equivalents such as Pentair Prowler 820 / 830 (version dependent)
  • Always verify your exact cleaner model and existing part number before ordering

Important Notes

  • Seller descriptions may vary between drive pulley, drive pulley bearing, and TT flat shaft pulley for the same part number.
  • This item is commonly sold as a single replacement part; verify quantity needed for your repair.
  • Inspect related drive components (tracks, guide wheels, pulley gears, bearings) during replacement to prevent repeat repairs.

Installation Notes

  • Disconnect the cleaner from the power supply before servicing.
  • Open the drive/side compartment per your cleaner’s service procedure.
  • Remove the worn pulley and inspect the shaft, guides, and tracks for wear or binding.
  • Install the replacement pulley in the correct orientation and confirm smooth rotation.
  • Reassemble and test cleaner movement in the pool after installation.

Related Products (Aqua Pool Supply)

Maintenance Tips

  • Rinse the cleaner after each use to reduce debris and chemical buildup in the drive area.
  • Inspect tracks, guide wheels, and pulleys regularly for cracking, wear, or binding.
  • Remove hair/string debris from moving parts to reduce drivetrain strain.
  • Replace worn drive parts early to help maintain traction and prevent additional component wear.
Questions about returns? View our return policy.

Hours Of Operation: 

Monday - Friday: 8:00 am to 4:00 pm Phoenix Time

Saturday and Sunday: Closed

  • Orders costing more than  $300 WILL be required to have signature confirmation upon delivery.
  • Handling time is typically only 1 day.   
  • Any item ordered after 1pm Phoenix time, may not ship same-day.
  • Call us if you require expedited shipping and we can give you quotes based on your needs.

Return Policy:

  • All products, except as noted below, are eligible for return up to 30 days after receipt of item.
  • For returns, an RMA form must be filled out HERE or customers can call for additional help.
  • Shipping costs will be deducted from all returned items.
  • Any item that is missing accessories, original packaging, or is not returned in the same condition that it was received in, may be subject to a re-stocking fee up to 100% based on the condition we receive it in. 
  • Items broken, damaged, or inoperable due to installer error will not be refunded.
  • Fill out the return form or give us a call to obtain an RMA and return shipping label.
  • There are no returns on the Pentair Colorsync 618031
  • No returns on pool cleaners.
  • No returns on opened seals and o-rings.
  • No returns on capacitors.
  • If a light is returned because it "doesn't work" and it tests fine, the cost to ship and a re-stocking fee will be deducted from the refund.
  • All products denied upon arrival at customers house WILL be charged the cost to ship.
  • Visa Gift Card Promotions: Gift cards are sent within 14 days of the order. When accepting the Visa Gift card, you agree that if your order is returned or refunded, this amount will be deducted from the refunded amount. All Visa Gift cards are sent via email in an E-Gift Card format and are non refundable.
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