This Bosch filter removes contaminants and improves water taste. The filter should be changed every six months for best performance. Simple installation requires no special tools. Measures approximately 13.25" x 2.5" x 2.5".00491849 (AP3383658) replaces 00643898, 00648016, 491849, 643898, 648016, AH3472377, EA3472377, PS3472377, PS8722630.