3.00" to 3.50" 90 Degree Silicone Reducer Hose - 3-Ply Black/Red

Do I need hose clamps to install this?

Hose clamps are required on both ends to seal the connection — they are not included. Standard worm-gear or T-bolt clamps sized for 3-inch and 3.5-inch hose will work.

Can I use this on a coolant line or does it only handle boost hoses?

This silicone construction handles coolant, boost, vacuum, and intercooler lines. Just verify the pressure rating matches your application — if your system runs above 20 psi sustained, confirm this hose's rated maximum before final install.

What prep or treatment is needed before installation?

Wipe both the hose ends and the barbed fittings with a lint-free cloth to remove any dust or debris. No primer, sealant, or special prep needed — the silicone seats directly onto the fitting.