Preheat your oven to 325 degrees F. Spray a bundt cake pan with baking spray to ensure your cake releases easily.
In a large bowl, whisk together the cake mix, flour, white sugar, and salt. This step combines the dry ingredients evenly.
Add the remaining ingredients: eggs, sour cream, water, vegetable oil, lemon juice, and lemon zest. Beat with a hand mixer for about 2 minutes, or until smooth.
Carefully transfer the batter to your prepared bundt pan. Pour it in gently to avoid creating air bubbles.
Bake in the preheated oven for 45 to 50 minutes, or until a toothpick inserted comes out clean.
Once baked, remove the cake from the oven and set it on a cooling rack for about 20 minutes.
After cooling, carefully invert the bundt cake onto a plate and allow it to cool completely.
For the glaze, combine the confectioners' sugar, lemon juice, and lemon zest in a bowl. Stir until smooth and drizzle over the cooled cake.
Let the glaze harden for about 10 to 15 minutes before slicing your cake.
Slice and serve. Enjoy your Lemon Bundt Cake!