Genuine Pentair 357150 black plastic cam-and-ramp strainer-lid clamp. Fits WhisperFlo pumps using the black cam-and-ramp clamp configuration, including the November 1998–December 1999 design. Package: one clamp; lid and O-ring are not included. Match the existing clamp style and part number. Confirm the manufacturer part number against your equipment parts diagram before ordering.