Black Silicone Coolant Bypass Cap, 1 3/4 inch ID 20730 5mm wall thickness (41mm /

5mm wall thickness (41mm / 1 5/8" OD) and a working pressure rating over 27 psi (135 psi burst pressure)

The 4-ply reinforcement results in a 5mm wall thickness (86mm / 3 3/8" and 80mm / 3 1/8" OD) and a working pressure rating over 20 psi (100 psi burst pressure)

This temperature rating is perfect for the "hot" (pre-intercooler) side of the system

These 90 degree reducer elbow hoses have a 45mm ID at one end and a 38mm ID at the other end to connect a 1 3/4" OD tube to a 1 1/2" OD tube

advance the blade until it pierces the hose

Black Silicone Coolant Bypass Cap, 1 3/4 inch ID 20730 5mm wall thickness (41mm /This 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 45mm (1 3 4") ID, 53mm (2 1 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