4.25" ID to 3.75" ID - Gloss Black

4.25" ID to 3.75" ID - Gloss BlackThis 4 1 4 inch to 3 3 4 inch reducing silicone coupler is 3 inches long. Four ply poly reinforced silicone for strength. Perfect for air to air aftercooler systems and turbocharger supercharger connections. Rated at 350 F continuous. Recommended clamps are 94100 0412 on the small end and 94100 0450 on the big end.

- One side is flared for a slip on fit

This constant-torque clamp can be used on all types of 8" ID intake hoses

but it's expensive and contains a plastic breather housing instead of the original aluminum one

This 45 degree silicone elbow has a 2

This can be used to replace GM part #15188721 and 15188715

This 90 degree silicone elbow is 5" ID on one end and 4" ID on the other and can be used any place you need a reducing 90-degree bend

This 2" OD carbon fiber elbow is used in air intake systems

4" Inner diameter

One end goes on 2" OD tubing

Use part number 94100-0362

Contains the following parts:

It's only disadvantage is the fact that it doesn't have the few degrees of flex that a hump hose has