Check the listing for details. Pentair Whisperflo/Intelliflo Diffuser Assembly 072927 with Oring Replacement. Condition: New. Listed at 49.99 USD. Compatibility: This diffuser is designed to be compatible with all Whisperflo pool pumps ranging from 0.5 HP - 2 HP. It is important to note that this diffuser will not work on a 3 HP pump.Durability: This Pentair Whisperflo diffuser is made with virgin PBT in the USA. Designed to be the last Pentair whisperflo high performance pump diffuser you will ever purchase!Bonus Products! : With your purchase of a diffuser you get a complimentary diffuser oring. Sometimes just changing out the diffuser is not enough. That's why we included a diffuser oring as well.Built In Stainless Steel Washers: This diffuser has two built in 316 stainless steel washers that allow you to tighten the diffuser screws without damaging the diffuser itself.Replace Seal Plate and Impeller if Necessary: If you notice that the seal plate and impeller are old or cracked, consider replacing those two products with the Swimables replacements.