Just finished the coolant mod 2 the TSX. It took much longer 2 find the damn fitting then it did 2 do the by-pass. I couldn't find a 5/16 fitting so I used a 3/8 brass elbo and 5/16 vacuum plugs. The elbo fit perfect nice and snug! I also bought new hose clamps but the fitting fit so well I didn't need them, I just used the stock clamps. U can c the one valve closed off and the other is right below the throttle body. If any1 needs pics of where the outlet coolant valve is let me know and I can shoot some pics of that as well. Here r the pics below let me know what u guys think.