Multiple Choices: TuoLauthon Couplers have diffrent kinds of Sizes for meeting your needs. Package includes:1pc 3.75"-4" Straight Black Silicone Reducer Coupler,2pcs stainless steel hose Clamps. High Quality Coupler:4-ply Polyester Reinforced.High Quality Clamps:Includes 2 T-bolt clamps.Hose Inner diameter 95mm-102mm(3.75"-4"),Length 76mm,Wall Thickness 5mm. High Performance:Perfect for air intake, intercooler piping and other turbo applications. Working Temperature: -76 Degree F (-60 Degree C)- +500 Degree F (+260 Degree C). Working Pressure: 0.3 Mpa (43.5 PSI)-0.9 Mpa (130.5 PSI). Bursting Pressure: 2 Mpa TuoLauthon Black Silicone Reducer Coupler with 2 T-Bolt Clamps 4 Layers of Polyester Reinforcement Suitable High Level Turbo Pipe
TuoLauthon silicone couplers have 4 layers of polyester reinforcement and are suitable for applications with boost pressures up to 45psi, temperature rating of 428 Degree F.
The couplers are suitable for direct to turbocharger installations.
Coupler Size:3.75 to 4 inches(95mm-102mm).

Attention:
Temperature Rating of 428 Degrees F (220 Degree C).
High Quality Coupler:4-ply Polyester Reinforced.
High Quality Clamps: Includes 2 T-bolt clamps. High Performance: Perfect for air intake, intercooler piping and other turbo applications.