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What is this port for?

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01-27-2011, 07:46 PM	#1
muckyp Registered User Join Date: Mar 2001 Location: Forney, Texas Posts: 290	What is this port for? I just got my new brake proportioning valve put on and realized there is an extra port on top of it. What is this for? Do I need to find a plug for it? Surely the little plastic thing that is in it won't work. Attached Images __________________ 70 SWB 454/TH400

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