Genuine OEM 4Moms Mamaroo Structural Replacement Parts Connecting Brackets (A-C & B-D) Plastic End Caps  Snap Buttons Side Rail Mounting Brackets (A, B, C, D) Spring Detent Rail Connectors Zippers for Seat Cover Seat Ring Assembly Side Rail (C-D & A-B) Connectors Fits Following Models: Mamaroo 1 & 2 (4M-005) from 2010, 2011, 2012 Mamaroo 3 (1026) from 2015 Mamaroo 4 (1037) from 2017 Mamaroo 5 (1046) from 2022