Black Silicone Coolant Bypass Cap, 7/8 inch ID 11713 The hose should very nearly

The hose should very nearly touch the reservoir body

and you're done

Silicone hose is for use on intake systems only

5" (63mm) ID hose combines the tough flexibility and good looks of our black silicone coolant hoses with a fuel-and oil-resistant fluorocarbon rubber (FKM) inner liner

It is designed specifically for connecting 3 3/8" (86mm) OD metal intake pipes

Black Silicone Coolant Bypass Cap, 7/8 inch ID 11713 The hose should very nearlyThis cap features the same water and coolant compatible silicone rubber formulation as our silicone coolant hoses. It is designed for capping off coolant bypass or vacuum fittings, but it can also be used to protect fittings in storage. This size has a 22mm (7 8") ID, 30mm (1 3 16") OD and measures 38mm (1 1 2") Long overall with a 30mm depth. Maximum temperature 392 F (200 C). Operating pressure rating 42 psi. Black silicone rubber only. Sold