I 've just come back from a mechanic, this bolt doesn't fit my honda civic DX 2008 4door 1.8L (from Canada). The diameter is too big.
(I remember the original plug diamter is about 13mm)

I compared with with 090-033 dorman, it says fit my honda civic 2008

https://www.dormanproducts.com/p-658...origin=keyword

However, both

https://www.dormanproducts.com/p-320...origin=keyword

https://www.dormanproducts.com/p-658...origin=keyword

have same diameter 14mm.

Question:

1. how can 090-033 says it fits, while 090-087 doesnt' fit?
   
2. How to check the diameter of my honda civic oil drain plug?
   

thanks