Dry-Pac kit for  4rd  Gen Pumps. Includes all connectors and one sachet of Dry-Pac medium. This kit is easy to fit. Dry Pack will remove over 90% of moisture. MK2 and 3rd Gen pumps have air inlet holes at the bottom of the pump. MKI pumps have a single air inlet at the top of the pump underneath the handle and this kit is not compatible.