This piece specifically fits the model made by the following author. By purchasing this model, it means that you have taken responsibility for making this part fit. 
Author of the base model: isx_15
Formats: Z3D,OBJ
3D Model Specificatons 
Low Quality Verticies - 4,071
Low Quality PolyCount (Traingles) - 4,164
Medium Quality Verticies - 16,535
Medium Quality PolyCount (Triangles) - 16,300
Textures - No
Materials - No
Uv Mapped - No
*3D Model Disclaimer - This Is Not A Real Life Part And Is Meant For 3D Model Design Only