If you're dealing with Webasto heater issues, this ROOTMUTIFY fuel tank standpipe kit is exactly what you need! It's a direct replacement for part numbers 1320399A and 35320A, so you know it'll fit perfectly. The standpipe itself is 650mm long with a 5mm internal diameter, made from high-quality copper that handles heat like a champ without corroding. The kit comes with everything you need - the standpipe, two clamps, and a fuel line hose that has great air tightness. It works with a ton of Webasto models including Air Top series, Thermo Top series, and various HL models. The installation is straightforward - you only need external access to the fuel tank, no complicated internal work required. The copper construction means it's corrosion-resistant and built to last, which is crucial for heater components. Whether you're a professional mechanic or a DIYer working on your RV or boat heater, this replacement part saves you from buying expensive OEM parts without sacrificing quality. Seriously, if your Webasto heater isn't working properly, this standpipe replacement often fixes those fuel delivery issues and gets you back to having reliable heat. It's one of those specific parts that can solve a big headache!