Automatic Robotic Pool Cleaner Replacement Parts, Guide Wheels 4 Pack with 2 Pack Pulley Gears 3884997-R6 for Maytronics Dolphin, Nautilus CC Plus Pool Cleaner M200/M400/M500 &Dx3/Dx4/Dx6

With these gears my robot runs smooth and faster...like new. Good fit, easy to install.

These wheels are great replacements. Overtime the wheels get ruined or thin and need to be replaced. This is a great replacement if you know how to open and replace the wheel in the machine.

I recently purchased the Guide Wheels 4 Pack with 2 Pack Pulley Gears Replacement Parts (3884997-R6), and I have to say that I was thoroughly disappointed with my experience. Right out of the box, these fell apart with ball bearings going everywhere. I had no choice but to return them. However, I will commend the seller for making the return process hassle-free.When I received the package, I was initially hopeful that these replacement parts would solve the issue I was having with my pool robot. Gears were no better; they seemed fragile and lacked the durability required for proper functioning.The most frustrating part of this experience was that these parts fell apart almost immediately after I took them out of the box. It was clear that they were not even remotely suitable for the purpose they were designed for. This left me feeling like I had wasted both time and money on a product that simply couldn't meet its basic expectations.However, I must give credit where it's due. The one redeeming aspect of this ordeal was the hassle-free return process. The seller promptly accepted the return without any issues, and I received a refund without delay. It was a relief to encounter good customer service in the midst of such a disappointing product experience.

Worked perfect on my Nautilus CC

Received product as advertised. Fit, form and finish where all to OEM standard. Installed easily into Dolphin cc Plus and was operational in less than 20 minutes.

These fit perfectly. Don’t hesitate to buy.

These fit my Maytronics vac but, really didn’t work long. Seems the drive gear doesn’t lock in good and eventually this lets the gear pull down and jumps the track off. Hate to say it but for me should have just coughed the money for the OEM part. After about a month I took the old OEM gear that was on the non drive side and used it on the drive. This seemed to work well, track stayed on cleaner worked well. They just aren’t quite engineered substantial enough and the shoulder that holds the gear in the unit should be better. I’ll buy OEM at some point soon..

I actually fixed my Nautilus Robot myself using these great, perfect parts. Yeah for good quality. Mary