Seals washer pump to washer reservoir. This is for the smaller 10mm hole. See the various grommets and plugs below, for all different pump configurations.
Small electric pump that fits into the recess on the side of washer reservoir. One single washer hose connection. Electrical contacts are two flat spade connectors.
Seals small hole in reservoir when not used for additional pump. This plug is for the smaller
hole (10mm diameter). See 20mm plug below, along with 10mm and 20mm grommets.