These three letters have an outsized impact on tuner and import automobile society, from Insta tags to aftermarket areas. Everything from the Japanese manufacturer or with major Japanese influence may be described with the expression, even when it won't strictly suit the first definition. JDM, short for Japanese Domestic Market https://johnathanijijz.webbuzzfeed.com/37263096/not-known-details-about-subaru-ej20-engine-for-sale