Black Silicone Coolant Bypass Cap, 1 1/2 inch ID 20708 This size has a 22mm

This size has a 22mm (7/8") ID

The special heat-shrink polymer sleeves create a tight seal with uniform pressure all around your hose

Install one large hose clamp on the reducing elbow below the clip slot

These one meter (3

Black Silicone Coolant Bypass Cap, 1 1/2 inch ID 20708 This size has a 22mmThis 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 38mm (1 1 2") ID, 46mm (1 13 16") OD and measures 38mm (1 1 2") Long overall with a 30mm depth. Maximum temperature 392 F (200 C). Operating pressure rating 14 psi. Black silicone rubber only. Sold