[Fit Perfectly] This locking ring replacement for pool pumps is designed to replace damaged, deformed, or unsealed pool cover pump lids. It securely locks and holds the lid and O-ring assemblies in place on pool pumps, helping restore proper function and performance. [Compatibility] Pool spa pump part 357199 is compatible only with Whisper, Intelliflo, and Intelliflo VSF models. It is not compatible with VS pumps. [High Quality] This part has been thoroughly tested by the manufacturer and subjected to extensive tension and abrasion testing to ensure durability and long-term performance. [Easy to Install] Turn off the system and release any pressure. Rotate the locking ring counterclockwise to remove. Some force may be required. Remove the old lid and replace it with the new locking ring, then tighten securely back into place. Color: As shown in photo Material: Plastic Package Contents: 1 x Pool Pump Locking Ring Note: Light reflection and differences in display screens may cause slight variations between the color in the image and the actual item. Measurement may vary by +/- 1-3 cm.