Filter cartridge retention feature

A liquid filtration system, comprising:

• a filter head;
• a filter cartridge configured to be removably coupled to the filter head, the filter cartridge comprising:
• a shell housing defining a first housing end, a second housing end, and a housing sidewall extending between the first housing end and the second housing end;
• and
• a filter element received within the shell housing and removably coupled to the shell housing, the filter element comprising:
• a media pack configured to filter matter from a fluid flowing therethrough;
• an endcap coupled to an end of the media pack, the endcap comprising an endcap surface, and a retaining member engaged with the shell housing, the retaining member comprising:
• a first retainer first portion extending axially away from the endcap surface;
• a first retainer second portion separated from the first retainer first portion by a radial gap;
• a first retainer projection extending radially from the first retainer second portion and configured to engage the shell housing to couple the endcap to the shell housing;
• a first retainer compliant portion coupled to the first retainer first portion and the first retainer second portion, the first retainer compliant portion deforming in response to movement of the first retainer second portion radially toward the first retainer first portion;
• and
• a handle rotatably coupled to the retaining member.

A liquid filtration system, comprising:

• a filter head;
• a filter cartridge configured to be removably coupled to the filter head, the filter cartridge comprising:
• a shell housing defining a first housing end, a second housing end, and a housing sidewall extending between the first housing end and the second housing end;
• and
• a filter element received within the shell housing and removably coupled to the shell housing, the filter element comprising:
• a media pack configured to filter matter from a fluid flowing therethrough;
• an endcap coupled to an end of the media pack, the endcap comprising a retaining member engaged with the shell housing;
• and
• a handle rotatably coupled to the retaining member, and operable between a first handle position and a second handle position, the handle biasing the retaining member toward a central axis in the first handle position, and the handle allowing engagement of the retaining member with the shell housing in the second handle position;
• and
• a knob coupled to the handle and extending through the retaining member, the knob engaging a radially outward-facing surface of the retaining member to bias the retaining member toward the central axis when the handle is in the first handle position.