VW heater hose. Coolant hoses wear out from the inside out so make sure you take a good look at the other hoses as well. If they look weak, consider purchasing a kit with all the correct hoses and save money over doing the job one hose at a time. These silicone coolant hoses are made in the USA of aircraft quality materials, designed to last a lifetime. They include special stainless steel clamps made for silicone hoses.
The heater core that this VW heater hoses connects to is shown below. When you remove the hose from your car inspect the plastic connection point that passes through the firewall. You don’t want this section to be cracked and leaking to your interior. You are going to lose some coolant when you replace the heater hose. Make sure you top off your Jetta, Golf, Rabbit, or Scirocco with Volkswagen approved German Pentosin coolant.