1 inch Aluminum Hose Plug with NPT Female Port 89 5mm wall thickness (94mm /

5mm wall thickness (94mm / 3 11/16" OD) and a working pressure rating over 12 psi (64 psi burst pressure)

It is designed specifically for connecting 2" (51mm) OD metal intake pipes

Use them to connect any two 41mm ID hoses: an elbow to a straight section

Use a standard heat gun to shrink the clamp tightly over the hose

1 inch Aluminum Hose Plug with NPT Female Port 89 5mm wall thickness (94mm /These special plugs make it easy to add a switch or gauge sender to your cooling system. The 1 inch OD fits into the branch of any of our Silicone Coolant Hose Tees (sold separately). The female NPT threads accept a temperature or pressure switch*, an electrical gauge sender, or even a petcock to bleed air out of the system. Black anodized aluminum for long life. * Note: Grounding type single wire switches will require the addition of a grounding wire