Will this fit my existing coolant line diameter?

This is a 1.25-inch bore. If your current hose is 1.25", this swaps straight in. If you're running a different diameter, you'll need to confirm before ordering — wrong size won't seal.

Do I need clamps to secure this hose?

Yes. Clamps are not included with this hose. Use worm-gear or band clamps rated for high temperature on both the inlet and outlet connections to prevent weeping.

Can I use this on a turbo intake line?

Yes, this hose is rated for boost and high-temperature applications. Make sure your clamps are torqued tight—pressure builds quickly and loose fittings will leak.