I looked in my Helm manual. It doesn't show a full system diagram, but it looks as it may be to the left of the brake booster, in one of the A/C pipes. My book also shows an A/C filter closer to the condenser too, probably in the same A/C pipe. You may want to check with the dealer for a definite answer, though. Maybe the A/C filter is something that is added after an A/C compressor failure?? Or maybe it's stock on all Intrigues? Anyone know?