Silicone Hose, 3 3/4 x 3 1/4 inch ID Straight Reducer Color:Blue The 127mm ID at one

The 127mm ID at one end and 102mm ID at the other end let you connect a 5" OD tube to a 4" OD tube

75 and 3613-1

Operating pressure rating 14 psi

25 Lined Hose Clamps for 3/4" End

Silicone Hose, 3 3/4 x 3 1/4 inch ID Straight Reducer Color:Blue The 127mm ID at oneOur silicone hose is built for endurance and performance in custom coolant and intake plumbing applications. Each hose is hand crafted from multiple layers of silicone rubber with polyester reinforcing fabric between the layers. The silicone rubber remains flexible and tough from 50 C to +180 C ( 76 F to 356 F). The outside has a smooth, shiny, "wipe down" finish that is easy to keep clean. These straight reducer hoses are approximately 5 inches long