When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
On a D series civic the head of the starter bolt is 14mm. That is not how you measure bolts though. You go by the diamiter of the shaft - number of threads - lenght of bolt. On a d series civic they 2 are different lenghts. FYI.