Check the listing for details. New Maytronics Dolphin Motor Unit Complete Rebuild Kit 9995372RD-EX With Puller. Condition: New. Listed at 72.99 USD. This is for 9995372RD -EX only!!!! Don’t buy if you not sure what you need contact me first. If you’re going to work on your own unit, I recommend you replace the O-rings and seals They might still look good, but if they’ve already been used, they have already crushed from original installation. You should never reuse any of the O-rings on any of the pool bot units. Happy bidding!! This is repair kit for Maytronics dolphin Impeller and Gearbox motors BOTH 63zyc-a5 and 63zy100-18 or 5521269 and 5500027 with main housing O-rings and puller includes: Complete kit to rebuild impeller motor and gearbox motor with puller, main housing O-rings and a bag of desiccant COMES WITH DIRECTIONS overhaul motors NOTE READ THIS Never try to turn the gear on a gearbox by hand or with a tool you will damage the gears in the gearbox. The motor is not locked up. It is how it is designed. When rebuilding anything on your robot you should always take pictures and make sure you know where all shims go in the gear boxes. They are very small and easy to lose. CHECK OUT MY STORE FOR MORE KITS AND OPTIONS!!!