Rear wiper washer reservoir. Fits all vans with rear wipers. Does not include cap: Find cap HERE Ref ID: 251955453E  

Windshield wiper arm nut cover/wiper cap. There is one cap per wiper arm:  One in each front wiper and and one in the rear. Sold individually. Two different angles are pictured. Ref ID: 133955435

Bosch MicroEdge. This is the 16" rear wiperblade. Ref ID: 40716A

This windshield wiper relay controls the front windshield wipers in your Vanagon.  If your wipers stop working and you've checked the fuse (usually fuse #10 on early vans and #17 on later vans),...