Yes. The illustrated parts list, or IPL, will say what type and length you need, be it mediacat, or eservice.
They sell precut pieces, and 25 meter rolls of "R" hoses , if you prefer to save time and cut it yourself.
They are both fuel hose. Viton hose is better for instances where integrity, (resistance to breaking down and dissolving or degrading), are of utmost importance.
Viton is more resiliant and pliable, (bounces back to it's original shape, and stretches better) than R3 hose. Some applications are for fuel injection systems, and areas where lots of repeated movement (cyclic movements) and sharper bends are required. It is more resistant to kinking than R3 hose, and it's a more expensive compound of rubber.
R3 hose is buna straight hose, and is a very good fuel hose, but not as durable as viton, and can kink if bends are taken too sharply. They may kink easier near a heat source too.