What's the length of this hose?

Length isn't specified in the product data — measure your run before ordering, or confirm fitment with your system schematic. Reducer hoses are typically compact, so account for the step in your layout.

Can I use this for both coolant and boost?

Silicone handles both applications. Just confirm your system's operating temps and pressures stay within silicone's limits — silicone typically runs 200°F+ continuously and handles moderate turbo boost without issue.

Do I need clamps?

Hose clamps are not included. You'll need two clamps — one for the 2-inch end and one for the 3-inch end. Stainless steel hose clamps are standard; size to your specific inlet and outlet diameters.