Will this hose need clamps, and what size?

Yes, you'll need hose clamps on both ends. Clamp size depends on your barb fitting diameter — typically T-bolt or worm-gear clamps rated for high-temp applications. Test-fit your fittings first to confirm clamp size before ordering separately.

Can I install this on a stock cooling system, or is it only for modified setups?

This hose works on both stock and modified systems. The 45-degree bend is universal — it just depends on whether your cooling lines need that specific angle routing. Measure your current line path and compare the bend geometry before purchasing.

Does the blue color fade over time, or do I need to protect it?

Silicone hose color can fade under UV and ozone exposure, especially in engine bays. Wrapping the hose with heat tape or a protective sleeve extends color life and adds abrasion protection against sharp edges and fasteners.