Maintain a leak-free and efficient pool or spa system with the U9-373Z Black O-Ring Replacement. Shasta Pool Supply markets the lowest prices on Pentair parts. Specifically, this high-quality OEM part provides a tight, durable seal for Pentair pumps.
- Genuine Pentair Replacement Part – Ensures precise compatibility and performance with Pentair pumps and filters.
- Leak-Preventing Seal – Keeps your pool system watertight for optimal efficiency.
- Maintains Equipment Efficiency – Protects your pump, filter, and other components from leaks and damage.

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Find the best pool equipment to complete your entire pool system. The lowest possible prices offered at fastest shipping.
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Pentair IntelliCenter Personality Upgrade Kit i8P | Single Body 521910
Regular price $599.00 USDRegular priceUnit price / per$1,995.00 USDSale price $599.00 USDSale
What our customers are saying
I always go to TS Pool Supply for all my pool needs. Professional help with the exact parts I need & quick shipping saves me from driving. The entire team work together and make the experience professional and quickly find what you're looking for.
I always go to TS Pool Supply for all my pool needs. Professional help with the exact parts I need & quick shipping saves me from driving. The entire team work together and make the experience professional and quickly find what you're looking for.
Jeffrey B.
I bought a demo/open box chlorinator from them. So far the product has been working well (one week) and it looked new in the manufacturers box when I got it. Communication with them was great. Price I got for the open box item was worth it. Would use them again. Thanks.
I bought a demo/open box chlorinator from them. So far the product has been working well (one week) and it looked new in the manufacturers box when I got it. Communication with them was great. Price I got for the open box item was worth it. Would use them again. Thanks.
Ken J.
The overall experience was great. The only problem I had was when I tried to find the option of where I would like to pick up my order, it would not allow me to do so at the Surprise location. Dan, from the Surprise location kept in contact with me that same day I put the order in and was able to take my order to the Surprise location as he had been to the warehouse and said he could take it with him, In the end, it all worked out. Thank you Dan for helping me out, very much appreciated!
The overall experience was great. The only problem I had was when I tried to find the option of where I would like to pick up my order, it would not allow me to do so at the Surprise location. Dan, from the Surprise location kept in contact with me that same day I put the order in and was able to take my order to the Surprise location as he had been to the warehouse and said he could take it with him, In the end, it all worked out. Thank you Dan for helping me out, very much appreciated!
Perry M
FAQ
Our expert staff answers customer's most asked questions.
Is it OK to replace a 1 HP pool pump with a 1.5 HP?
Yes, you can replace a 1 HP pump with a 1.5 HP pump, provided the exterior dimensions are the same. However, be cautious about the impeller; while it will fit, it won't pump more water since both motors turn at the same RPM.
How many HP pumps do I need for a pool?
The horsepower (HP) of your pool pump should match your pool size and flow rate, which usually ranges from 40 GPM to 80 GPM. Generally, pool pumps range from 0.75 HP to 3 HP. Opting for a higher GPM flow rate can help reduce wear and tear on your pool equipment.
How often should I replace my pool pump?
On average, a well-maintained pool pump can last 8 to 15 years. However, it’s essential to monitor its performance. If you notice reduced efficiency, increased noise, or frequent repairs, it may be time to consider a replacement.
Learning Center
Blog posts
The latest news and guides making buying and maintaining pool equipment easier.
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Every Airbnd owner thinks about how to maximize profits. The heated pool is a great idea until the first utility bill. Now, we have guests complaining the water is cold....
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You started pricing robotic pool cleaners online. Now, one site has a cordless robot for $299 and cleaner costs $1,799. This article explains what each price tier delivers for you...
How Much Does a Good Robotic Pool Cleaner Cost ...
You started pricing robotic pool cleaners online. Now, one site has a cordless robot for $299 and cleaner costs $1,799. This article explains what each price tier delivers for you...
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