where can i get offroad parts for a 99 blazer 4.3l

What kind of parts are you looking for?
S10 are not usually listed on the front page, however most companies will carry parts for it.

LOCKED for duplicate threads:
offroad parts website (http://www.blazerforum.com/m_9887/tm.htm) - Locked
parts for mudden (http://www.blazerforum.com/m_43920/tm.htm) - Locked
help me please (http://www.blazerforum.com/m_20943/tm.htm) - Locked
where to get parts (http://www.blazerforum.com/m_9290/tm.htm) - Locked
finding parts (http://www.blazerforum.com/m_43774/tm.htm) - To be left open