Blue Silicone Hose Coupler, 3 1/2 inch ID, 4 inch Length

This hose is built for endurance and performance in custom coolant plumbing and intake systems. Silicone rubber construction with 4-ply reinforcement makes this hose tough, reliable, and flexible to temperatures from -60°C to +180°C (-76°F to +356°F).

Hand-crafted and quality inspected to the highest European standards. Bright Blue with a smooth, shiny "wipe-down" finish. Pre-cut to 4 inches (100mm) long, just the right length to connect two tubes in your intake system. The 3.5 inch ID is designed to slip over a 3 1/2" (90mm) OD tube. The 4-ply reinforcement results in a working pressure rating in excess of 19 psi (78 psi burst pressure) and a 5.5mm wall thickness (101mm / 4" OD). Use our Hose Joiners (HJ89) and our Lined Hose Clamps (Part No. 3613-4.25) to construct the exact shapes you need.

Note: This hose is NOT formulated for use in oil or fuel plumbing applications. It will survive occasional spills and oil leaks, but it will not stand up to continuous exposure to petroleum.