As you know, one of the great innovations of Minecraft 1.6.2 are horses. These can be equipped with armor, but you can’t craft them.
Craftable Horse Armor 1.7.2 and 1.7.10 is a simple mod that adds just four crafts to the game. One for iron armature, one for gold, and thirdly the diamond, all this about horse?s armor. The other craft is for the saddle.

Detail and Download here : Craftable Horse Armor Mod

Homepage: Mods for Minecraft