Look under your hood on the right hand side and against the firewall there is a big black round thing called a power booster. On it there is a big hard hose coming off of it. And comming out of the middle is a big metal thing called a master cylinder. Now does this thing have several different wires coming off of it with two caps where you can put fluid in it. That is abs. It looks quite complicated. As a non abs unit does not. Also it should say abs on the unit.