Part: Honda-Bond 4 Gasket Sealer
Why You Need This: This is Honda-Bond 4 semi drying gasket sealer, often called Three Bond or Yama-Bond. This is one of the very few gasket sealers that you need to use on your Honda CL / CB350, CL / CJ / CB360, CL / CB450, CB500T, CB500F, CB550. It is designed to be used in between aluminum parts that are face to face together. Parts such as crankcases (CB450 & CB350) or valve covers (CB360) do not use a paper gasket, but rather a thin coat of Honda-Bond 4 on both sides of the mating aluminum surfaces. We often see a repair that someone has used RTV silicone (permatex) on, which is not the correct sealer to use on motorcycle engines. Sold as a 100g tube, one tube will do many bikes. Use a little of this on the outer perimeter of any oil seals too to help avoid any leaks.
Installation Tip: Make sure your surfaces are clean and grease free. Use some brake cleaner to remove any oil or grease from the sealing surface before applying the Honda-Bond 4. A very thin even coat is all that is needed on both sealing surfaces. We spread it out thin with our finger (in a glove). Do not squeeze on the sealer like toothpaste along the surface as it is easy to apply too much.