ZAITOESundance Spas, ClearRay XL 6472-841, UV Bulb Assembly with Gasket and Connector, OEM Quality, Compatible with Sundance Spas ClearRay Water Purification System

This ZAITOE ClearRay Bulb Replacement works well and fits my Jacuzzi J-345 just like the original. It also costs less than half the price. As other reviewers have stated, this doesn't come with instructions or a glove to use during install (don't touch the glass or oils from your hands can actually cause the bulb to fail). The lack of these additional things are the only reason I'm knocking this down to 4 stars. That said, there are plenty of videos online that you can watch that will walk you through the replacement if you don't know what you are doing. Since Jacuzzi recommends this bulb be replaced consistently (every year, I believe), going with this option can save a good deal of $$.

Not much to these UV bulbs, but the connector fit perfectly and the spa did not have any issues when installing it and turning it on. Being a spa owner from way back before UV lights were a thing, I am not sure if they really help reduce chlorine use or do any better at sanitizing the water in the spa. I find that if you are clean going into the spa (shower before and do not wash your swimwear) that the spa water lasts a long time with very little chemical maintenance.

I compared this bulb to a name-brand one I already have on hand, and they look to be the same length and diameter. This bulb came intact, but wasn't packaged as well as the name-brand one. The name-brand one also included a latex glove to keep from getting fingerprints on the bulb, something that this bulb did not include. There are also no instructions included.If you know how to change the bulb and take precautions to not get fingerprints on this bulb, it's about half the price of the name-brand bulb ($23.99 at the time of this review, versus almost $50 for the name-brand bulb) and so it's a great way to save money.

I just installed this yesterday and it appears to work just fine. I'll report back in a month or so on performance once it's been in the tub for 30 days. In the picture, the one on the left is the OEM one that came out of the tub and the one on the right is this one. It was packed well and had a foam sleeve around it to protect it (also pictured) - something I appreciated since the OEM doesn't ship with something completely covering the bulb - just foam braces. Note, you can't touch the bulb before inserting (or you need to clean it) as the oils on your skin can cause it to burn out prematurely.Side by side, it appears 100% identical to the OEM and the tub recognizes it as functioning. So far, so good!

It looks just like the factory bulb I just put in the jacuzzi. The only real difference was no installation paper and no rubber glove to keep the oil from your hands making contact. Much less expensive then the one I just bought at the dealer.