Each kit contains all necessary gaskets, O-rings, float valve assembly or float needle and jets to rebuild one O.E.M. carburetor body IMPORTANT NOTE: Many kits have multiple applications but the jets and jet needles provided may not be the right sizes for the application. Always check and verify all jet sizes / parts before installation. There will be spare / unused parts in each kit as most parts will be unused due to multiple applications may not fit particular application only. This Item Fits the Following Applications: 1978 Kawasaki KZ400C Special1978 Kawasaki KZ400B1978 Kawasaki KZ400A Deluxe1977 Kawasaki KZ400/D