1990 integra question, need info
 

i got a 1990 acura integra GS 2 door . i recently got this car from a friend [ he was moving and didnt want the car no more. i noticed that a coolant drain plug is missing [the one on the engine]. it is a big bolt , i need to know the correct size so that i can go to autozone or home depot and buy it .
can someone tell me the correct size or at least direct me to a web site that has an online database of acura parts :sad:

please help me

sorry, but i believe your best bet is to go to your nearest dealer so that a parts specialist can show you a direct diagram so you can get the factory replacement. i would highly go against going with a hardware store's bolt for the coolant plug - you wont know of its ability to withstand the pressure and heat that a coolant plug is exposed to.