The JCB 40004546 Seat Foam Kit, also referred to as a Cushion Kit, is a genuine OEM replacement part designed to restore comfort and support to operator seats in various JCB machinery. This kit includes the necessary foam components for the seat cushion, ensuring a proper fit and durability. It measures approximately 500 mm in length, 500 mm in width, and 100 mm in height, with a weight of about 0.80 kg.